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• Installing chrome in Centos 6.2 (Final)

  - by usjes

  I need to install chrome in a dedicated centos server where I only access via ssh, it doesn't have X or any windows graphical stuff. I need it to be able to pack extensions using google-chrome --pack-extension. I tried adding this to /etc/yum.repos.d/google.repo [google-chrome] name=google-chrome - 32-bit baseurl=http://dl.google.com/linux/chrome/rpm/stable/i386 enabled=1 gpgcheck=1 gpgkey=https://dl-ssl.google.com/linux/linux_signing_key.pub And then yum install google-chrome-stable, but there's a huge list of dependencies problems: How can I install chrome without breaking anything else? UPDATE: Ok, I installed perl-CGI from .rpm because yum couldn't find it, now dependencies resolve and it show me this list of packages to install: Dependencies Resolved ============================================================================================================================================================================================================================================= Package Arch Version Repository Size ============================================================================================================================================================================================================================================= Installing: google-chrome-stable x86_64 19.0.1084.52-138391 google-chrome 35 M Installing for dependencies: ConsoleKit x86_64 0.4.1-3.el6 base 82 k ConsoleKit-libs x86_64 0.4.1-3.el6 base 17 k GConf2 x86_64 2.28.0-6.el6 base 964 k ORBit2 x86_64 2.14.17-3.1.el6 base 168 k bc x86_64 1.06.95-1.el6 base 110 k cdparanoia-libs x86_64 10.2-5.1.el6 base 47 k cups x86_64 1:1.4.2-44.el6_2.3 updates 2.3 M dbus x86_64 1:1.2.24-5.el6_1 base 207 k desktop-file-utils x86_64 0.15-9.el6 base 47 k ed x86_64 1.1-3.3.el6 base 72 k eggdbus x86_64 0.6-3.el6 base 91 k foomatic x86_64 4.0.4-1.el6_1.1 base 251 k foomatic-db noarch 4.0-7.20091126.el6 base 980 k foomatic-db-filesystem noarch 4.0-7.20091126.el6 base 4.4 k foomatic-db-ppds noarch 4.0-7.20091126.el6 base 19 M ghostscript x86_64 8.70-11.el6_2.6 updates 4.4 M ghostscript-fonts noarch 5.50-23.1.el6 base 751 k gstreamer x86_64 0.10.29-1.el6 base 764 k gstreamer-plugins-base x86_64 0.10.29-1.el6 base 942 k gstreamer-tools x86_64 0.10.29-1.el6 base 23 k iso-codes noarch 3.16-2.el6 base 2.4 M lcms-libs x86_64 1.19-1.el6 base 100 k libIDL x86_64 0.8.13-2.1.el6 base 83 k libXScrnSaver x86_64 1.2.0-1.el6 base 19 k libXfont x86_64 1.4.1-2.el6_1 base 128 k libXv x86_64 1.0.5-1.el6 base 21 k libfontenc x86_64 1.0.5-2.el6 base 24 k libgudev1 x86_64 147-2.40.el6 base 59 k libmng x86_64 1.0.10-4.1.el6 base 165 k libogg x86_64 2:1.1.4-2.1.el6 base 21 k liboil x86_64 0.3.16-4.1.el6 base 121 k libtheora x86_64 1:1.1.0-2.el6 base 129 k libvisual x86_64 0.4.0-9.1.el6 base 135 k libvorbis x86_64 1:1.2.3-4.el6_2.1 updates 168 k mailx x86_64 12.4-6.el6 base 234 k man x86_64 1.6f-29.el6 base 263 k mesa-libGLU x86_64 7.11-3.el6 base 201 k nvidia-graphics195.30-libs x86_64 195.30-120.el6 atrpms 13 M openjpeg-libs x86_64 1.3-7.el6 base 59 k pax x86_64 3.4-10.1.el6 base 69 k phonon-backend-gstreamer x86_64 1:4.6.2-20.el6 base 125 k polkit x86_64 0.96-2.el6_0.1 base 158 k poppler x86_64 0.12.4-3.el6_0.1 base 557 k poppler-data noarch 0.4.0-1.el6 base 2.2 M poppler-utils x86_64 0.12.4-3.el6_0.1 base 73 k portreserve x86_64 0.0.4-4.el6_1.1 base 22 k qt x86_64 1:4.6.2-20.el6 base 4.0 M qt-sqlite x86_64 1:4.6.2-20.el6 base 50 k qt-x11 x86_64 1:4.6.2-20.el6 base 12 M qt3 x86_64 3.3.8b-30.el6 base 3.5 M redhat-lsb x86_64 4.0-3.el6.centos base 24 k redhat-lsb-graphics x86_64 4.0-3.el6.centos base 12 k redhat-lsb-printing x86_64 4.0-3.el6.centos base 11 k sgml-common noarch 0.6.3-32.el6 base 43 k time x86_64 1.7-37.1.el6 base 26 k tmpwatch x86_64 2.9.16-4.el6 base 31 k xdg-utils noarch 1.0.2-17.20091016cvs.el6 base 58 k xml-common noarch 0.6.3-32.el6 base 9.5 k xorg-x11-font-utils x86_64 1:7.2-11.el6 base 75 k xz x86_64 4.999.9-0.3.beta.20091007git.el6 base 137 k xz-lzma-compat x86_64 4.999.9-0.3.beta.20091007git.el6 base 16 k Transaction Summary ============================================================================================================================================================================================================================================= Install 62 Package(s) Is it safe to continue and install all that or could I break something already installed?

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• How to diagnose and solve an erratic "HDCP Support Required"?

  - by Jom Orgstrom

  I am playing a digital tv broadcast on Windows Media Center for Windows 7. I built this system so it works with HDCP, and in fact I have been able to watch tv and bluray before with this same computer. However, I suddenly started getting an "HDCP Support Required" error from WMC. The entire message is as follows: HDCP Support Required High-bandwidth Digital Content Protection (HDCP) may not be supported by the current video card. Use an HDCP-compliant display, video card, and video driver. Or, connect using an analog connection such as component or VGA. Relevant specs are: CPU: Ivy Bridge Core i7-3770 Motherboard: Asus P8H77-I Memory: 16GB DDR3-1600 Graphics: Radeon HD 7850 (Driver by AMD, version 8.982.0.0 built on 2012/07/27) Display: Acer P243w connected by HDMI Sound: Roland Quad-Capture (It complains even when I use the bundled VIA HD Audio) TV Tuner: I-O Data GV-MC7/HZ3 OS: Windows 7 Professional SP1, Windows Update enabled. All patched and up to date. As you can see, there is nothing weird or old about my setup. I am also not doing anything strange, not doing any overclocking, weird system changes and so on. One thing that does happen from time to time, is that the display goes black for a few seconds (sometimes when watching media contents, sometimes when just using photoshop or Visual Studio). This happened with my previous setup as well, so I'd be inclined to think it is a display or cable issue (apart from the BD drive, these are the only things I kept from my previous setup to this one). But being a digital transfer, as far as I know, these things either work or not. Never erratically or with decreased quality. The thing is that sometimes I can watch the TV, sometimes not. This happens with recorded programs as well, so it's not a per-program thing. Sometimes rebooting helps, sometimes it doesn't. Sometimes unplugging and plugging back the HDMI connector helps, sometimes it doesn't. Sometimes doing so doesn't even turn the screen back on, so I have to reboot. Unfortunately, WMC's error message is quite unhelpful. I'd like to know exactly where the problem is, so I can solve it. I don't want to buy a brand new display just to then find out it was a registry setting that was misconfigured. I've tried looking at the system event viewer, but these errors don't show up at all in there. Other people who have this problem seem to have a setup that is not HDCP compliant, so I turn to you guys here. Anybody knows how to diagnose this problem? Edit: So I got the Cyberlink Blu-ray disc advisor. I ran it and told me everything was okay, except for the Video Connection Type, which showed as "Digital (without HDCP)". I then proceeded to unplug the power cable from the monitor, plugged it in again, ran the tool again, and now it's "Digital (with HDCP)". Needless to say, I can watch my TV and recorded programs on WMP again. I'm guessing that at some point, something may be slightly wrong with the HDCP setup, and Windows decides to reset the entire content protection path (which leads to the screen blanking out). Usually the reset succeeds, but sometimes it doesn't, so Windows defaults to turning HDCP off. There's no way to turn it back on, except by doing a hard reset of the display. I really want to know what the exact error was, so I can fix it. Is it the cable? is it the display? is it the video card? the driver? Also, is there any other way to try and turn HDCP on again without having to hard reset the display? Oh, questions, questions...

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• Computer not POSTing "randomly"?

  - by smoth190

  I have a custom built PC that is exhibiting some...odd... behavior, something I've never seen before. It was working fine one day, and the next day, it wouldn't start. Seeing as I wanted an upgrade anyway, I purchased a new motherboard that was compatible with all my parts. While replacing the motherboard, I accidentally damaged the CPU. Well, I wanted a new one anyway... so I got a new one. Seeing as I was replacing a ton of parts already, I bought a new PSU because the old one was super loud. When I slapped it all together, it starts up, lights, fans, drives, they all start. But I get no display from the monitor. No beeps, which I believe means it doesn't POST. I figured it was the RAM, because after removing the sound card and graphics card, there was nothing else that I hadn't replaced. When I remove both sticks of RAM, I get a continuous beeping, and according to the mobo handbook, means no RAM. So I think the mobo is functional, or atleast partly. I bought new RAM, but it still didn't work. I tried 3 monitors, with both VGA and DIV. So it's probably not the monitor, either. Now, let me get to the random part. Every 20 or so boots (I should also mention, for about 3 out of 5 boots I have to unplug the PC because it won't powerdown via the button), it will POST and I'll get display. Then, after about 2 or 3 resets, it won't work again. This confuses me so much, because even when I change nothing, it will/will not work. My thought is that maybe it has something to do with the RAM not clearing or something. I also reset the CMOS battery, incase that had anything to do with it, but no eval. I found some weird suggestion online about holding the power button for 30 seconds while it was unplugged. That did nothing, but I didn't expect it would... I've replaced just about the entire computer, and all the parts are compatible. Done about everything I can think of, but nothing has worked. Hopefully someone can help me here. And as I side note: When I do get my computer to boot, it says my hardware has changed and I have to re-activate windows. But it says I have to call Microsoft to do it. So I get this fancy automated voice that asks me to enter in a code into windows, then it asks me "How many computers have you activated with this copy of Windows?". Well, I had it on my computer before I replaced everything, so I said 1. Then he yelled at me for violating my 1-use license. I dunno what's going on there, do I have to re-purchase Windows 7? And they wonder why people pirate software... That's just a bonus question, though. Specs: 8GB of DDR2 RAM (Corsair) AMD CPU (I don't know what GHz or model because I can't find the box... (I think its 4 cores of 2.8Ghz) ASRock A785GM-LE Motherboard

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• Windows 7 is stuck at "Starting Windows" when I attempt to boot computer

  - by Eli

  Basically, whenever I turn on my computer, it gets to the Starting Windows phase and just stays there. The startup animation still plays, yet it gets nowhere. I have tried booting into safe mode, however it gets stuck at loading CLASSPNP.SYS. It then freezes there and doesn't continue booting. I have tried booting into recovery mode from the hard drive, and it freezes after displaying the background image. I have tried booting from a recovery CD, which works, and I was able to use system restore. However, using system restore did not fix it, and it still is stuck at the Starting Windows screen. I have tried booting a Windows CD (Windows 8 Retail Installer) to see if I could upgrade it to fix this issue, however that froze at a blank screen after it got past the boot logo. I have tried changing around the BIOS settings (including resetting), to no avail. I have tried re-plugging the internal PSU cables (this is a custom-built desktop), yet this has changed nothing. I can boot into a loopback Ubuntu install on the same drive, which works fine, other than the fact that it has issues with some of the USB ports and the network card. This system has worked fine for the past few months, completely stable, and nothing in the configuration has changed before this error started happening. Startup Repair on the Windows recovery CD doesn't find any issues. Unplugging my secondary hard drive or swapping around memory doesn't change anything. The hard drive itself is fine, it hasn't shown any signs of failure and once again, boots my other OS fine. If anyone could help with this, that would be great. I can't seem to find any possible solution to this. If it makes any difference, my system specs are as follows: AMD FX-8320 Gigabyte GA-970A-D3 4GB of DDR3 Radeon HD 6870 550w PSU I'd like to not have to reinstall Windows, for I have more than a terabyte of data that I would have to back up if that becomes the only option. EDIT: I have since tried the following: Tried the solution involving restoring files from RegBackup, which changed nothing. Tried testing everything with Hiren's boot CD, everything comes back as fine. Tried disabling everything unnecessary in the BIOS and unplugging everything unneeded, it still hangs. Tried swapping out every possible combination of RAM, it still has the same result. The RAM is not at fault it seems Tried every GPU I own (which is many!) and it still hangs at the exact same place. Tried minimizing the power consumption as much as possible, even using an old PCI graphics card. It still hangs at the same place in the same way, signifying that it's not the PSU at fault. Tried resetting the BIOS again, still nothing. Tried every possible combination of BIOS options, even downclocking everything, it still hangs in the same spot. Tried upgrading the BIOS from version FB to FD, which changed nothing. Based on this, I would conclude the motherboard to be at fault. Are there any other possibilities? I don't want to spend $150 for a new motherboard. EDIT 2: This is what it gets stuck at when I try to boot into safe mode: Note the slight graphical corruption at the top of the screen. No matter how I set up the system, this seems to be there. In addition, either it has stopped booting into safe mode now, or it takes upwards of 2+ hours, and I haven't left it running for that long.

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• Mac - Flash file not loaded in independent flash player

  - by Mugdha

  Hi, I am working on an independent application to play flash files on Mac. I have already done the same for Linux, and it works flawlessly but on mac for some reason flash is not drawing to my window. It is not throwing any kind of error too. I am using Flash player 10, that would mean that I am using the Core Graphics drawing model. I am able to send mouse events to flash and wrote a sample plugin to check if there was a problem in the context that I was sending, but my sample plugin draws properly to the window. I am getting a call for NPN_InvalidateRect twice and as a response I send an update Event back to flash. I drew a dummy rectangle to check that my context is correct. I have flipped the context to make the origin as top left corner. On doing right click on the debug version of the flash player it shows the following message: "Movie not loaded..." Can anyone give me any idea why is the content not being drawn? I would really appreciate the help, as I have been struggling with it for more than a month now. Here is a small log of the interaction that I have with flash: NPN_UserAgent Called NPN_GetValue Called with variable NPNVWindowNPObject; return NULL NPN_GetValue Called with variable NPNVWindowNPObject; return NULL NPN_GetValue Called with variable NPNVSupportsWindowless; return true NPN_SetValue Called for Variable - NPPVpluginTransparentBool; return true NPN_GetValue Called with variable NPNVsupportsCoreGraphicsBool; return true NPN_SetValue Called for Variable - NPNVpluginDrawingModel NPP_SetWindow (CoreGraphics): 0, window=0xebaa90, context=0xe4c930, window.x:0 window.y:22 window.width:480 window.height:270 NPP_HandleEvent(activateEvent) accepted:0 isActive: 1 NPP_HandleEvent(updateEvt) accepted: 1 NPN_UserAgent Called NPN_GetURLNotify Called with URL - javascript:top.location+"flashplugin_unique" NPN_GetValue Called with variable NPNVWindowNPObject; return NULL NPP_NewStream URL=/Users/mjain/Desktop/clock.swf MIME=application/x-shockwave-flash error=0 NPP_WriteReady responseURL=/Users/mjain/Desktop/clock.swf bytes=268435455 NPN_InvalidateRect Called NPP_Write responseURL=/Users/mjain/Desktop/clock.swf bytes=9925 total-delivered=9925/9925 NPP_WriteReady responseURL=/Users/mjain/Desktop/clock.swf bytes=268435455 NPP_DestroyStream responseURL=/Users/mjain/Desktop/clock.swf error=0 NPP_HandleEvent(updateEvt) accepted: 1 NPN_InvalidateRect Called NPP_HandleEvent(updateEvt) accepted: 1 NPP_NewStream URL=javascript:top.location+"flashplugin_unique" MIME=text/plain error=0 NPP_WriteReady responseURL=javascript:top.location+"flashplugin_unique" bytes=16000 NPN_UserAgent Called NPP_Write responseURL=javascript:top.location+"flashplugin_unique" bytes=52 total-delivered=52/52 NPP_WriteReady responseURL=javascript:top.location+"flashplugin_unique" bytes=16000 NPP_DestroyStream responseURL=javascript:top.location+"flashplugin_unique" error=0 NPP_URLNotify responseURL=javascript:top.location+"flashplugin_unique" reason=0 Thanks Mugdha.

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• Getting problem while capturing image through web cam in Java -OpenCV code.

  - by Chetan

  Hi.. I am developing Face detector using OpenCV library in java... I have written sample code for this,but it is giving Error while capturing image. can any one help please. Here is the code import java.awt.; import java.awt.event.; import java.awt.image.MemoryImageSource; import hypermedia.video.OpenCV; @SuppressWarnings("serial") public class FaceDetection extends Frame implements Runnable { ///Main method. public static void main(String[] args) { //System.out.println( "\nOpenCV face detection sample\n" ); new FaceDetection(); } // program execution frame rate (millisecond) final int FRAME_RATE = 1000/30; OpenCV cv = null; // OpenCV Object Thread t = null; // the sample thread // the input video stream image Image frame = null; // list of all face detected area Rectangle[] squares = new Rectangle[0]; //** Setup Frame and Object(s). FaceDetection() { super( "Face Detection" ); // OpenCV setup cv = new OpenCV(); //cv.capture(1, 1, 100); cv.capture( 320, 240 ); cv.cascade( OpenCV.CASCADE_FRONTALFACE_ALT ); // frame setup this.setBounds( 100, 100, cv.width, cv.height ); this.setBackground( Color.BLACK ); this.setVisible( true ); this.addKeyListener( new KeyAdapter() { public void keyReleased( KeyEvent e ) { if ( e.getKeyCode()==KeyEvent.VK_ESCAPE ) { // ESC : release OpenCV resources cv.dispose(); System.exit(0); } } } ); // start running program t = new Thread( this ); t.start(); } // Draw video frame and each detected faces area. public void paint( Graphics g ) { // draw image g.drawImage( frame, 0, 0, null ); // draw squares g.setColor( Color.RED ); for( Rectangle rect : squares ) g.drawRect( rect.x, rect.y, rect.width, rect.height ); } @SuppressWarnings("static-access") public void run() { while( t!=null && cv!=null ) { try { t.sleep( FRAME_RATE ); // grab image from video stream cv.read(); // create a new image from cv pixels data MemoryImageSource mis = new MemoryImageSource( cv.width, cv.height, cv.pixels(), 0, cv.width ); frame = createImage( mis ); // detect faces squares = cv.detect( 1.2f, 2, OpenCV.HAAR_DO_CANNY_PRUNING, 20, 20 ); // of course, repaint repaint(); } catch( InterruptedException e ) {;} } } } Error while starting capture : device 0

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• WPF Animation FPS vs. CPU usage - Am I expecting too much?

  - by Cory Charlton

  Working on a screen saver for my wife, http://cchearts.codeplex.com/, and while I've been able to improve FPS on lower end machines (switch from Path to StreamGeometry, use DrawingVisual instead of UserControl, etc) the CPU usage still seems very high. Here's some numbers I ran from a few 5 minute sampling periods: ~60FPS 35% average CPU on Core 2 Duo T7500 @ 2.2GHz, 3GB ram, NVIDIA Quadro NVS 140M (128MB), Vista [My dev laptop] ~40FPS 50% average CPU on Pentium D @ 3.4GHz, 1.5GB ram, Standard VGA Graphics Adapter (unknown), 2003 Server [A crappy desktop] I can understand the lower frame rate and higher CPU usage on the crappy desktop but it still seems pretty high and 35% on my dev laptop seems high as well. I'd really like to analyze the application to get more details but I'm having issues there as well so I'm wondering if I'm doing something wrong (never profiled WPF before). WPF Performance Suite: Process Launch Error Unable to attach to process: CCHearts.exe Do you want to kill it? This error message occurs when I click cancel after attempting launch. If I don't click cancel it sits there idle, I guess waiting to attach. Performance Explorer: Could not launch C:\Projects2\CC.Hearts\CC.Hearts\bin\Debug (USEVISUAL)\CCHearts.exe. Previous attempt to profile the application finished unsuccessfully. Please restart the application. Output Window from Performance: Profiling started. Profiling process ID 5360 (CCHearts). Process ID 5360 has exited. Data written to C:\Projects2\CC.Hearts\CCHearts100608.vsp. Profiling finished. PRF0025: No data was collected. Profiling complete. So I'm stuck wanting to improve performance but have no concrete way to determine where the bottleneck is. Have been relatively successful throwing darts at this point but I'm beyond that now :) PS: Screensaver is hosted at CodePlex if you want to look at the source and missed the link above. Edit: My RenderOptions darts... // NOTE: Grasping at straws here ;-) RenderOptions.SetBitmapScalingMode(newHeart, BitmapScalingMode.LowQuality); RenderOptions.SetCachingHint(newHeart, CachingHint.Cache); RenderOptions.SetEdgeMode(newHeart, EdgeMode.Aliased); I threw those a little while back and didn't see much difference (not sure if the bitmap scaling even comes into play). Really wish I could get profiling working to know where I should try to optimize. For now I assume there is some overhead in creating a new HeartVisual and the DrawingVisual contained inside. Maybe if I reset and reused the hearts (tossed them in a queue once they completed or something) I'd see an improvement. Shrug Throwing darts while blindfolder is always fun.

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• How I can add JScroll bar to NavigableImagePanel which is an Image panel with an small navigation vi

  - by Sarah Kho

  Hi, I have the following NavigableImagePanel, it is under BSD license and I found it in the web. What I want to do with this panel is as follow: I want to add a JScrollPane to it in order to show images in their full size and let the users to re-center the image using the small navigation panel. Right now, the panel resize the images to fit them in the current panel size. I want it to load the image in its real size and let users to navigate to different parts of the image using the navigation panel. Source code for the panel: import java.awt.AWTEvent; import java.awt.BorderLayout; import java.awt.Color; import java.awt.Dimension; import java.awt.Graphics; import java.awt.Graphics2D; import java.awt.GraphicsEnvironment; import java.awt.Image; import java.awt.Point; import java.awt.Rectangle; import java.awt.RenderingHints; import java.awt.Toolkit; import java.awt.event.ComponentAdapter; import java.awt.event.ComponentEvent; import java.awt.event.MouseAdapter; import java.awt.event.MouseEvent; import java.awt.event.MouseMotionListener; import java.awt.event.MouseWheelEvent; import java.awt.event.MouseWheelListener; import java.awt.image.BufferedImage; import java.io.File; import java.io.IOException; import java.util.Arrays; import javax.imageio.ImageIO; import javax.swing.JFrame; import javax.swing.JOptionPane; import javax.swing.JPanel; import javax.swing.SwingUtilities; /** * @author pxt * */ public class NavigableImagePanel extends JPanel { /** * <p>Identifies a change to the zoom level.</p> */ public static final String ZOOM_LEVEL_CHANGED_PROPERTY = "zoomLevel"; /** * <p>Identifies a change to the zoom increment.</p> */ public static final String ZOOM_INCREMENT_CHANGED_PROPERTY = "zoomIncrement"; /** * <p>Identifies that the image in the panel has changed.</p> */ public static final String IMAGE_CHANGED_PROPERTY = "image"; private static final double SCREEN_NAV_IMAGE_FACTOR = 0.15; // 15% of panel's width private static final double NAV_IMAGE_FACTOR = 0.3; // 30% of panel's width private static final double HIGH_QUALITY_RENDERING_SCALE_THRESHOLD = 1.0; private static final Object INTERPOLATION_TYPE = RenderingHints.VALUE_INTERPOLATION_BILINEAR; private double zoomIncrement = 0.2; private double zoomFactor = 1.0 + zoomIncrement; private double navZoomFactor = 1.0 + zoomIncrement; private BufferedImage image; private BufferedImage navigationImage; private int navImageWidth; private int navImageHeight; private double initialScale = 0.0; private double scale = 0.0; private double navScale = 0.0; private int originX = 0; private int originY = 0; private Point mousePosition; private Dimension previousPanelSize; private boolean navigationImageEnabled = true; private boolean highQualityRenderingEnabled = true; private WheelZoomDevice wheelZoomDevice = null; private ButtonZoomDevice buttonZoomDevice = null; /** * <p>Defines zoom devices.</p> */ public static class ZoomDevice { /** * <p>Identifies that the panel does not implement zooming, * but the component using the panel does (programmatic zooming method).</p> */ public static final ZoomDevice NONE = new ZoomDevice("none"); /** * <p>Identifies the left and right mouse buttons as the zooming device.</p> */ public static final ZoomDevice MOUSE_BUTTON = new ZoomDevice("mouseButton"); /** * <p>Identifies the mouse scroll wheel as the zooming device.</p> */ public static final ZoomDevice MOUSE_WHEEL = new ZoomDevice("mouseWheel"); private String zoomDevice; private ZoomDevice(String zoomDevice) { this.zoomDevice = zoomDevice; } public String toString() { return zoomDevice; } } //This class is required for high precision image coordinates translation. private class Coords { public double x; public double y; public Coords(double x, double y) { this.x = x; this.y = y; } public int getIntX() { return (int)Math.round(x); } public int getIntY() { return (int)Math.round(y); } public String toString() { return "[Coords: x=" + x + ",y=" + y + "]"; } } private class WheelZoomDevice implements MouseWheelListener { public void mouseWheelMoved(MouseWheelEvent e) { Point p = e.getPoint(); boolean zoomIn = (e.getWheelRotation() < 0); if (isInNavigationImage(p)) { if (zoomIn) { navZoomFactor = 1.0 + zoomIncrement; } else { navZoomFactor = 1.0 - zoomIncrement; } zoomNavigationImage(); } else if (isInImage(p)) { if (zoomIn) { zoomFactor = 1.0 + zoomIncrement; } else { zoomFactor = 1.0 - zoomIncrement; } zoomImage(); } } } private class ButtonZoomDevice extends MouseAdapter { public void mouseClicked(MouseEvent e) { Point p = e.getPoint(); if (SwingUtilities.isRightMouseButton(e)) { if (isInNavigationImage(p)) { navZoomFactor = 1.0 - zoomIncrement; zoomNavigationImage(); } else if (isInImage(p)) { zoomFactor = 1.0 - zoomIncrement; zoomImage(); } } else { if (isInNavigationImage(p)) { navZoomFactor = 1.0 + zoomIncrement; zoomNavigationImage(); } else if (isInImage(p)) { zoomFactor = 1.0 + zoomIncrement; zoomImage(); } } } } /** * <p>Creates a new navigable image panel with no default image and * the mouse scroll wheel as the zooming device.</p> */ public NavigableImagePanel() { setOpaque(false); addComponentListener(new ComponentAdapter() { public void componentResized(ComponentEvent e) { if (scale > 0.0) { if (isFullImageInPanel()) { centerImage(); } else if (isImageEdgeInPanel()) { scaleOrigin(); } if (isNavigationImageEnabled()) { createNavigationImage(); } repaint(); } previousPanelSize = getSize(); } }); addMouseListener(new MouseAdapter() { public void mousePressed(MouseEvent e) { if (SwingUtilities.isLeftMouseButton(e)) { if (isInNavigationImage(e.getPoint())) { Point p = e.getPoint(); displayImageAt(p); } } } public void mouseClicked(MouseEvent e){ if (e.getClickCount() == 2) { resetImage(); } } }); addMouseMotionListener(new MouseMotionListener() { public void mouseDragged(MouseEvent e) { if (SwingUtilities.isLeftMouseButton(e) && !isInNavigationImage(e.getPoint())) { Point p = e.getPoint(); moveImage(p); } } public void mouseMoved(MouseEvent e) { //we need the mouse position so that after zooming //that position of the image is maintained mousePosition = e.getPoint(); } }); setZoomDevice(ZoomDevice.MOUSE_WHEEL); } /** * <p>Creates a new navigable image panel with the specified image * and the mouse scroll wheel as the zooming device.</p> */ public NavigableImagePanel(BufferedImage image) throws IOException { this(); setImage(image); } private void addWheelZoomDevice() { if (wheelZoomDevice == null) { wheelZoomDevice = new WheelZoomDevice(); addMouseWheelListener(wheelZoomDevice); } } private void addButtonZoomDevice() { if (buttonZoomDevice == null) { buttonZoomDevice = new ButtonZoomDevice(); addMouseListener(buttonZoomDevice); } } private void removeWheelZoomDevice() { if (wheelZoomDevice != null) { removeMouseWheelListener(wheelZoomDevice); wheelZoomDevice = null; } } private void removeButtonZoomDevice() { if (buttonZoomDevice != null) { removeMouseListener(buttonZoomDevice); buttonZoomDevice = null; } } /** * <p>Sets a new zoom device.</p> * * @param newZoomDevice specifies the type of a new zoom device. */ public void setZoomDevice(ZoomDevice newZoomDevice) { if (newZoomDevice == ZoomDevice.NONE) { removeWheelZoomDevice(); removeButtonZoomDevice(); } else if (newZoomDevice == ZoomDevice.MOUSE_BUTTON) { removeWheelZoomDevice(); addButtonZoomDevice(); } else if (newZoomDevice == ZoomDevice.MOUSE_WHEEL) { removeButtonZoomDevice(); addWheelZoomDevice(); } } /** * <p>Gets the current zoom device.</p> */ public ZoomDevice getZoomDevice() { if (buttonZoomDevice != null) { return ZoomDevice.MOUSE_BUTTON; } else if (wheelZoomDevice != null) { return ZoomDevice.MOUSE_WHEEL; } else { return ZoomDevice.NONE; } } //Called from paintComponent() when a new image is set. private void initializeParams() { double xScale = (double)getWidth() / image.getWidth(); double yScale = (double)getHeight() / image.getHeight(); initialScale = Math.min(xScale, yScale); scale = initialScale; //An image is initially centered centerImage(); if (isNavigationImageEnabled()) { createNavigationImage(); } } //Centers the current image in the panel. private void centerImage() { originX = (int)(getWidth() - getScreenImageWidth()) / 2; originY = (int)(getHeight() - getScreenImageHeight()) / 2; } //Creates and renders the navigation image in the upper let corner of the panel. private void createNavigationImage() { //We keep the original navigation image larger than initially //displayed to allow for zooming into it without pixellation effect. navImageWidth = (int)(getWidth() * NAV_IMAGE_FACTOR); navImageHeight = navImageWidth * image.getHeight() / image.getWidth(); int scrNavImageWidth = (int)(getWidth() * SCREEN_NAV_IMAGE_FACTOR); int scrNavImageHeight = scrNavImageWidth * image.getHeight() / image.getWidth(); navScale = (double)scrNavImageWidth / navImageWidth; navigationImage = new BufferedImage(navImageWidth, navImageHeight, image.getType()); Graphics g = navigationImage.getGraphics(); g.drawImage(image, 0, 0, navImageWidth, navImageHeight, null); } /** * <p>Sets an image for display in the panel.</p> * * @param image an image to be set in the panel */ public void setImage(BufferedImage image) { BufferedImage oldImage = this.image; this.image = image; //Reset scale so that initializeParameters() is called in paintComponent() //for the new image. scale = 0.0; firePropertyChange(IMAGE_CHANGED_PROPERTY, (Image)oldImage, (Image)image); repaint(); } /** * <p>resets an image to the centre of the panel</p> * */ public void resetImage() { BufferedImage oldImage = this.image; this.image = image; //Reset scale so that initializeParameters() is called in paintComponent() //for the new image. scale = 0.0; firePropertyChange(IMAGE_CHANGED_PROPERTY, (Image)oldImage, (Image)image); repaint(); } /** * <p>Tests whether an image uses the standard RGB color space.</p> */ public static boolean isStandardRGBImage(BufferedImage bImage) { return bImage.getColorModel().getColorSpace().isCS_sRGB(); } //Converts this panel's coordinates into the original image coordinates private Coords panelToImageCoords(Point p) { return new Coords((p.x - originX) / scale, (p.y - originY) / scale); } //Converts the original image coordinates into this panel's coordinates private Coords imageToPanelCoords(Coords p) { return new Coords((p.x * scale) + originX, (p.y * scale) + originY); } //Converts the navigation image coordinates into the zoomed image coordinates private Point navToZoomedImageCoords(Point p) { int x = p.x * getScreenImageWidth() / getScreenNavImageWidth(); int y = p.y * getScreenImageHeight() / getScreenNavImageHeight(); return new Point(x, y); } //The user clicked within the navigation image and this part of the image //is displayed in the panel. //The clicked point of the image is centered in the panel. private void displayImageAt(Point p) { Point scrImagePoint = navToZoomedImageCoords(p); originX = -(scrImagePoint.x - getWidth() / 2); originY = -(scrImagePoint.y - getHeight() / 2); repaint(); } //Tests whether a given point in the panel falls within the image boundaries. private boolean isInImage(Point p) { Coords coords = panelToImageCoords(p); int x = coords.getIntX(); int y = coords.getIntY(); return (x >= 0 && x < image.getWidth() && y >= 0 && y < image.getHeight()); } //Tests whether a given point in the panel falls within the navigation image //boundaries. private boolean isInNavigationImage(Point p) { return (isNavigationImageEnabled() && p.x < getScreenNavImageWidth() && p.y < getScreenNavImageHeight()); } //Used when the image is resized. private boolean isImageEdgeInPanel() { if (previousPanelSize == null) { return false; } return (originX > 0 && originX < previousPanelSize.width || originY > 0 && originY < previousPanelSize.height); } //Tests whether the image is displayed in its entirety in the panel. private boolean isFullImageInPanel() { return (originX >= 0 && (originX + getScreenImageWidth()) < getWidth() && originY >= 0 && (originY + getScreenImageHeight()) < getHeight()); } /** * <p>Indicates whether the high quality rendering feature is enabled.</p> * * @return true if high quality rendering is enabled, false otherwise. */ public boolean isHighQualityRenderingEnabled() { return highQualityRenderingEnabled; } /** * <p>Enables/disables high quality rendering.</p> * * @param enabled enables/disables high quality rendering */ public void setHighQualityRenderingEnabled(boolean enabled) { highQualityRenderingEnabled = enabled; } //High quality rendering kicks in when when a scaled image is larger //than the original image. In other words, //when image decimation stops and interpolation starts. private boolean isHighQualityRendering() { return (highQualityRenderingEnabled && scale > HIGH_QUALITY_RENDERING_SCALE_THRESHOLD); } /** * <p>Indicates whether navigation image is enabled.<p> * * @return true when navigation image is enabled, false otherwise. */ public boolean isNavigationImageEnabled() { return navigationImageEnabled; } /** * <p>Enables/disables navigation with the navigation image.</p> * <p>Navigation image should be disabled when custom, programmatic navigation * is implemented.</p> * * @param enabled true when navigation image is enabled, false otherwise. */ public void setNavigationImageEnabled(boolean enabled) { navigationImageEnabled = enabled; repaint(); } //Used when the panel is resized private void scaleOrigin() { originX = originX * getWidth() / previousPanelSize.width; originY = originY * getHeight() / previousPanelSize.height; repaint(); } //Converts the specified zoom level to scale. private double zoomToScale(double zoom) { return initialScale * zoom; } /** * <p>Gets the current zoom level.</p> * * @return the current zoom level */ public double getZoom() { return scale / initialScale; } /** * <p>Sets the zoom level used to display the image.</p> * <p>This method is used in programmatic zooming. The zooming center is * the point of the image closest to the center of the panel. * After a new zoom level is set the image is repainted.</p> * * @param newZoom the zoom level used to display this panel's image. */ public void setZoom(double newZoom) { Point zoomingCenter = new Point(getWidth() / 2, getHeight() / 2); setZoom(newZoom, zoomingCenter); } /** * <p>Sets the zoom level used to display the image, and the zooming center, * around which zooming is done.</p> * <p>This method is used in programmatic zooming. * After a new zoom level is set the image is repainted.</p> * * @param newZoom the zoom level used to display this panel's image. */ public void setZoom(double newZoom, Point zoomingCenter) { Coords imageP = panelToImageCoords(zoomingCenter); if (imageP.x < 0.0) { imageP.x = 0.0; } if (imageP.y < 0.0) { imageP.y = 0.0; } if (imageP.x >= image.getWidth()) { imageP.x = image.getWidth() - 1.0; } if (imageP.y >= image.getHeight()) { imageP.y = image.getHeight() - 1.0; } Coords correctedP = imageToPanelCoords(imageP); double oldZoom = getZoom(); scale = zoomToScale(newZoom); Coords panelP = imageToPanelCoords(imageP); originX += (correctedP.getIntX() - (int)panelP.x); originY += (correctedP.getIntY() - (int)panelP.y); firePropertyChange(ZOOM_LEVEL_CHANGED_PROPERTY, new Double(oldZoom), new Double(getZoom())); repaint(); } /** * <p>Gets the current zoom increment.</p> * * @return the current zoom increment */ public double getZoomIncrement() { return zoomIncrement; } /** * <p>Sets a new zoom increment value.</p> * * @param newZoomIncrement new zoom increment value */ public void setZoomIncrement(double newZoomIncrement) { double oldZoomIncrement = zoomIncrement; zoomIncrement = newZoomIncrement; firePropertyChange(ZOOM_INCREMENT_CHANGED_PROPERTY, new Double(oldZoomIncrement), new Double(zoomIncrement)); } //Zooms an image in the panel by repainting it at the new zoom level. //The current mouse position is the zooming center. private void zoomImage() { Coords imageP = panelToImageCoords(mousePosition); double oldZoom = getZoom(); scale *= zoomFactor; Coords panelP = imageToPanelCoords(imageP); originX += (mousePosition.x - (int)panelP.x); originY += (mousePosition.y - (int)panelP.y); firePropertyChange(ZOOM_LEVEL_CHANGED_PROPERTY, new Double(oldZoom), new Double(getZoom())); repaint(); } //Zooms the navigation image private void zoomNavigationImage() { navScale *= navZoomFactor; repaint(); } /** * <p>Gets the image origin.</p> * <p>Image origin is defined as the upper, left corner of the image in * the panel's coordinate system.</p> * @return the point of the upper, left corner of the image in the panel's coordinates * system. */ public Point getImageOrigin() { return new Point(originX, originY); } /** * <p>Sets the image origin.</p> * <p>Image origin is defined as the upper, left corner of the image in * the panel's coordinate system. After a new origin is set, the image is repainted. * This method is used for programmatic image navigation.</p>

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• Cannot run Android "Camera Preview" sample

  - by noisesolo

  The sample I'm referring to is: CameraPreview. The program simply force closes upon start up. I've also tried other camera demos that have the same problem. I'm trying to run the samples on my Nexus One and the emulator with the same problem on both. I'm not even sure if the emulator should be able to run them or not. Based on LogCat, the error is: 06-08 16:39:10.483: ERROR/AndroidRuntime(6726): Uncaught handler: thread main exiting due to uncaught exception 06-08 16:39:10.494: ERROR/AndroidRuntime(6726): java.lang.RuntimeException: Fail to connect to camera service 06-08 16:39:10.494: ERROR/AndroidRuntime(6726): at android.hardware.Camera.native_setup(Native Method) 06-08 16:39:10.494: ERROR/AndroidRuntime(6726): at android.hardware.Camera.<init>(Camera.java:110) 06-08 16:39:10.494: ERROR/AndroidRuntime(6726): at android.hardware.Camera.open(Camera.java:90) 06-08 16:39:10.494: ERROR/AndroidRuntime(6726): at com.example.android.apis.graphics.Preview.surfaceCreated(CameraPreview.java:69) 06-08 16:39:10.494: ERROR/AndroidRuntime(6726): at android.view.SurfaceView.updateWindow(SurfaceView.java:454) 06-08 16:39:10.494: ERROR/AndroidRuntime(6726): at android.view.SurfaceView.dispatchDraw(SurfaceView.java:287) 06-08 16:39:10.494: ERROR/AndroidRuntime(6726): at android.view.ViewGroup.drawChild(ViewGroup.java:1529) 06-08 16:39:10.494: ERROR/AndroidRuntime(6726): at android.view.ViewGroup.dispatchDraw(ViewGroup.java:1258) 06-08 16:39:10.494: ERROR/AndroidRuntime(6726): at android.view.View.draw(View.java:6557) 06-08 16:39:10.494: ERROR/AndroidRuntime(6726): at android.widget.FrameLayout.draw(FrameLayout.java:352) 06-08 16:39:10.494: ERROR/AndroidRuntime(6726): at android.view.ViewGroup.drawChild(ViewGroup.java:1531) 06-08 16:39:10.494: ERROR/AndroidRuntime(6726): at android.view.ViewGroup.dispatchDraw(ViewGroup.java:1258) 06-08 16:39:10.494: ERROR/AndroidRuntime(6726): at android.view.View.draw(View.java:6557) 06-08 16:39:10.494: ERROR/AndroidRuntime(6726): at android.widget.FrameLayout.draw(FrameLayout.java:352) 06-08 16:39:10.494: ERROR/AndroidRuntime(6726): at com.android.internal.policy.impl.PhoneWindow$DecorView.draw(PhoneWindow.java:1830) 06-08 16:39:10.494: ERROR/AndroidRuntime(6726): at android.view.ViewRoot.draw(ViewRoot.java:1349) 06-08 16:39:10.494: ERROR/AndroidRuntime(6726): at android.view.ViewRoot.performTraversals(ViewRoot.java:1114) 06-08 16:39:10.494: ERROR/AndroidRuntime(6726): at android.view.ViewRoot.handleMessage(ViewRoot.java:1633) 06-08 16:39:10.494: ERROR/AndroidRuntime(6726): at android.os.Handler.dispatchMessage(Handler.java:99) 06-08 16:39:10.494: ERROR/AndroidRuntime(6726): at android.os.Looper.loop(Looper.java:123) 06-08 16:39:10.494: ERROR/AndroidRuntime(6726): at android.app.ActivityThread.main(ActivityThread.java:4363) 06-08 16:39:10.494: ERROR/AndroidRuntime(6726): at java.lang.reflect.Method.invokeNative(Native Method) 06-08 16:39:10.494: ERROR/AndroidRuntime(6726): at java.lang.reflect.Method.invoke(Method.java:521) 06-08 16:39:10.494: ERROR/AndroidRuntime(6726): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:860) 06-08 16:39:10.494: ERROR/AndroidRuntime(6726): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618) 06-08 16:39:10.494: ERROR/AndroidRuntime(6726): at dalvik.system.NativeStart.main(Native Method) All I did to try out the sample was create a new Android 2.1update1 Project, named everything according to the supplied Java file, copied the Java file from the URL to the CameraPreview.java file, then run it. Am I supposed to do anything else? Any help would be appreciated. Thanks in advance.

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• Eclipse Galileo won't start after OS X update to 10.6.3

  - by GC

  Hi All, I have just updated os x to 10.6.3 and no Eclipse won't start the logs show the following error, but I can't figure it out. Can anyone shed any light? !SESSION 2010-03-30 10:06:38.244 ----------------------------------------------- eclipse.buildId=M20090917-0800 java.version=1.6.0_17 java.vendor=Apple Inc. BootLoader constants: OS=macosx, ARCH=x86, WS=cocoa, NL=en_US Framework arguments: -product org.eclipse.epp.package.php.product -keyring /Users/gav/.eclipse_keyring -showlocation Command-line arguments: -os macosx -ws cocoa -arch x86 -product org.eclipse.epp.package.php.product -keyring /Users/gav/.eclipse_keyring -showlocation !ENTRY org.eclipse.ui.workbench 2 0 2010-03-30 10:06:40.139 !MESSAGE A handler conflict occurred. This may disable some commands. !SUBENTRY 1 org.eclipse.ui.workbench 2 0 2010-03-30 10:06:40.139 !MESSAGE Conflict for 'com.aptana.ide.editors.views.actions.actionKeyCommand': HandlerActivation(commandId=com.aptana.ide.editors.views.actions.actionKeyCommand, handler=com.aptana.ide.editors.views.actions.ActionKeyCommandHandler, expression=,sourcePriority=0) HandlerActivation(commandId=com.aptana.ide.editors.views.actions.actionKeyCommand, handler=com.aptana.ide.editors.views.actions.ActionKeyCommandHandler, expression=,sourcePriority=0) !ENTRY org.eclipse.ui 4 0 2010-03-30 10:06:40.964 !MESSAGE Unhandled event loop exception !STACK 0 java.lang.NullPointerException at org.eclipse.swt.graphics.Device.getFontList(Device.java:369) at org.eclipse.jface.resource.FontRegistry.filterData(FontRegistry.java:465) at org.eclipse.jface.resource.FontRegistry.createFont(FontRegistry.java:499) at org.eclipse.jface.resource.FontRegistry.defaultFontRecord(FontRegistry.java:563) at org.eclipse.jface.resource.FontRegistry.defaultFontData(FontRegistry.java:575) at org.eclipse.jface.resource.FontRegistry.getFontData(FontRegistry.java:591) at org.eclipse.ui.internal.themes.ThemeElementHelper.installFont(ThemeElementHelper.java:116) at org.eclipse.ui.internal.themes.ThemeElementHelper.populateRegistry(ThemeElementHelper.java:59) at org.eclipse.ui.internal.Workbench$33.runWithException(Workbench.java:1482) at org.eclipse.ui.internal.StartupThreading$StartupRunnable.run(StartupThreading.java:31) at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:35) at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:134) at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:3405) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3102) at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2316) at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2221) at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:500) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332) at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:493) at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149) at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:113) at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:194) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:368) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:179) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:559) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:514) at org.eclipse.equinox.launcher.Main.run(Main.java:1311) It looks like the update may have upgraded the Java version, possibly :S but I don't know if this can be rolled back even if it did update it. java version "1.6.0_17" Java(TM) SE Runtime Environment (build 1.6.0_17-b04-248-10M3025) Java HotSpot(TM) 64-Bit Server VM (build 14.3-b01-101, mixed mode) Thanks in advance!

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• How to access SVG elements with Javascript

  - by gargantaun

  I'm messing around with SVG and I was hoping I could create SVG files in Illustrator and access elements with Javascript. Here's the SVG file Illustrator kicks out (It also seems to add a load of junk to the beginning of the file that I've removed) <?xml version="1.0" encoding="utf-8"?> <!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd"> <svg version="1.1" id="Layer_1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px" width="276.843px" height="233.242px" viewBox="0 0 276.843 233.242" enable-background="new 0 0 276.843 233.242" xml:space="preserve"> <path id="delta" fill="#231F20" d="M34.074,86.094L0,185.354l44.444,38.519l80.741-0.74l29.63-25.186l-26.667-37.037 c0,0-34.815-5.926-37.778-6.667s-13.333-28.889-13.333-28.889l7.407-18.519l31.111-2.963l5.926-21.481l-12.593-38.519l-43.704-5.185 L34.074,86.094z"/> <path id="cargo" fill="#DFB800" d="M68.148,32.761l43.704,4.445l14.815,42.963l-7.407,26.667l-33.333,2.963l-4.444,14.074 l54.074-1.481l22.222,36.296l25.926-3.704l25.926-54.074c0,0-19.259-47.408-21.481-47.408s-31.852-0.741-31.852-0.741 l-19.259-39.259L92.593,8.316L68.148,32.761z"/> <polygon id="beta" fill="#35FF1F" points="86.722,128.316 134.593,124.613 158.296,163.872 190.889,155.724 214.593,100.909 194.593,52.02 227.186,49.057 246.444,92.02 238.297,140.909 216.074,172.761 197.556,188.316 179.778,169.798 164.963,174.983 163.481,197.946 156.815,197.946 134.593,159.428 94.593,151.279 "/> <path class="monkey" id="alpha" fill="#FD00FF" d="M96.315,4.354l42.963,5.185l18.519,42.222l71.852-8.148l20.74,46.667l-5.926,52.593 l-24.444,34.074l-25.185,15.555l-14.074-19.259l-8.889,2.964l-1.481,22.222l-14.074,2.963l-25.186,22.963l-74.074,4.444 l101.481,4.444c0,0,96.297-17.777,109.63-71.852S282.24,53.983,250.389,20.65S96.315,4.354,96.315,4.354z"/> </svg> As you can probably see, each element has an ID, and I was hoping to be able to access individual elements with Javascript so I could change the Fill attribute and respond to events such as click. The HTML is bog basic <!DOCTYPE html> <html> <head> <title>SVG Illustrator Test</title> </head> <body> <object data="alpha.svg" type="image/svg+xml" id="alphasvg" width="100%" height="100%"></object> </body> </html> I guess this is two questions really. a) Is it possible to do it this way, as opposed to using something like Raphael or jQuery SVG. b) If it is possible, what's the technique?

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• Android: manifest targetSdkVersion change resulted in: icon not visible, widget no longer works, and

  - by Casey

  I recently upgraded my Android app to support multiple resolutions. Previously, my Android.manifest file had a line: To support multiple density and resolution devices, I changed this to: <supports-screens android:smallScreens="false" android:normalScreens="true" android:largeScreens="true" android:anyDensity="true" /> <uses-sdk android:minSdkVersion="3" android:targetSdkVersion="4" /> I then added a couple of new directories, like drawable-hdpi-v4 and drawable-long-hdpi-v4 that includes the high-res versions of the graphics. That's about it. Ever since releasing this update, there have been a decent number of users complaining about various problems: - the app icon doesn't appear (I did not create a high res version of the icon) - the home screen widget no longer works, even if they delete and re-add it (this code did not change with the update). I've had a user send me their error log, which shows: 03-19 20:59:41.617 W/ActivityManager( 1854): Unable to launch app com.alt12.babybump/10078 for broadcast Intent { action=android.appwidget.action.APPWIDGET_UPDATE flags=0x4 comp={com.alt12.babybump/com.alt12.babybump.WidgetGirl} (has extras) }: process is bad There is one questionable section in my existing widget code that may be relevant: @Override public void onReceive(Context context, Intent intent) { // v1.5 fix that doesn't call onDelete Action final String action = intent.getAction(); if (AppWidgetManager.ACTION_APPWIDGET_DELETED.equals(action)) { final int appWidgetId = intent.getExtras().getInt( AppWidgetManager.EXTRA_APPWIDGET_ID, AppWidgetManager.INVALID_APPWIDGET_ID); if (appWidgetId != AppWidgetManager.INVALID_APPWIDGET_ID) { this.onDeleted(context, new int[] { appWidgetId }); } } else { super.onReceive(context, intent); } } And perhaps most troublesome: the sqlite database is no longer accessible/writeable for some users so their data is no longer available. I did add the WRITE_EXTERNAL_STORAGE permission to the manifest. This is only happening to certain users and it tends to be HTC Eris users. In that error log I see things such as: 03-19 16:00:56.173 E/FlurryAgent( 4791): java.io.FileNotFoundException: /data/data/com.alt12.babybump/files/.flurryagent.-2333f5cb 03-19 16:00:56.173 E/FlurryAgent( 4791): at org.apache.harmony.luni.platform.OSFileSystem.open(OSFileSystem.java:231) 03-19 16:01:09.393 E/Database( 4791): sqlite3_open_v2("/data/data/com.alt12.babybump/databases/uitematmamad.db", &handle, 6, NULL) failed 03-19 16:01:09.393 W/System.err( 4791): android.database.sqlite.SQLiteException: unable to open database file It's as if the update has caused a new process and it can't access the old process's data, or something. Any help appreciated!

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• Is there an algorithm for converting quaternion rotations to Euler angle rotations?

  - by Will Baker

  Is there an existing algorithm for converting a quaternion representation of a rotation to an Euler angle representation? The rotation order for the Euler representation is known and can be any of the six permutations (i.e. xyz, xzy, yxz, yzx, zxy, zyx). I've seen algorithms for a fixed rotation order (usually the NASA heading, bank, roll convention) but not for arbitrary rotation order. Furthermore, because there are multiple Euler angle representations of a single orientation, this result is going to be ambiguous. This is acceptable (because the orientation is still valid, it just may not be the one the user is expecting to see), however it would be even better if there was an algorithm which took rotation limits (i.e. the number of degrees of freedom and the limits on each degree of freedom) into account and yielded the 'most sensible' Euler representation given those constraints. I have a feeling this problem (or something similar) may exist in the IK or rigid body dynamics domains. Solved: I just realised that it might not be clear that I solved this problem by following Ken Shoemake's algorithms from Graphics Gems. I did answer my own question at the time, but it occurs to me it may not be clear that I did so. See the answer, below, for more detail. Just to clarify - I know how to convert from a quaternion to the so-called 'Tait-Bryan' representation - what I was calling the 'NASA' convention. This is a rotation order (assuming the convention that the 'Z' axis is up) of zxy. I need an algorithm for all rotation orders. Possibly the solution, then, is to take the zxy order conversion and derive from it five other conversions for the other rotation orders. I guess I was hoping there was a more 'overarching' solution. In any case, I am surprised that I haven't been able to find existing solutions out there. In addition, and this perhaps should be a separate question altogether, any conversion (assuming a known rotation order, of course) is going to select one Euler representation, but there are in fact many. For example, given a rotation order of yxz, the two representations (0,0,180) and (180,180,0) are equivalent (and would yield the same quaternion). Is there a way to constrain the solution using limits on the degrees of freedom? Like you do in IK and rigid body dynamics? i.e. in the example above if there were only one degree of freedom about the Z axis then the second representation can be disregarded. I have tracked down one paper which could be an algorithm in this pdf but I must confess I find the logic and math a little hard to follow. Surely there are other solutions out there? Is arbitrary rotation order really so rare? Surely every major 3D package that allows skeletal animation together with quaternion interpolation (i.e. Maya, Max, Blender, etc) must have solved exactly this problem?

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• Print Preview Control used in a custom Print Preview Dialog.

  - by Kildareflare

  I have successfully implemented printing and print preview for my app using the PrintDocument, PrintDialog and PrintPreviewDialog classes of .NET. However my app uses a toolkit to improve the appearance of the standard .NET controls. There are versions of most .NET controls in the toolkit, but none for the Print controls. Therefore to ensure that the appearance of these controls matches the rest of the app I am creating a custom PrintPreviewDialog based on a toolkit form and embedding a .NET PrintPrewviewControl in it. My problem is that the PrintPreviewControl always shows "No pages to display". I had no trouble getting this to work using the .NET PrintPreviewDialog and cannot see what I am doing wrong. This is a .NET 2.0 PrintPreviewControl and so I know that I need to call InvalidatePreview() after assigning the PrintDocument. However it does not seem to matter where i place it, the PrintPage event handler never gets called... EDIT: I've just noticed that while the original PrintDocument m_printDocument shows a PrintPageHandler in its properties, the m_printPreviewControl.Document does not. Any ideas why it is being lost..? public class PrintEngine { ...rest of class... public PrintEngine() { m_printDoc.PrintPage += new PrintPageEventHandler(printDoc_PrintPage); } public void PrintPreview() { //ORIGINAL CODE USING .NET DIALOG WORK OK //PrintPreviewDialog dlg1 = new PrintPreviewDialog(); //dlg1.Document = m_printDoc; //PrepareImageForPrinting(); //dlg1.ShowDialog(); //CODE USING MY CUSTOM DIALOG DO NOT WORK? MyPrintPreviewDialog dlg2 = new MyPrintPreviewDialog(); dlg2.Document = m_printDoc; PrepareImageForPrinting(); //Creates the m_printImage List dlg2.ShowDialog(); } private void printDoc_PrintPage(object sender, PrintPageEventArgs e) { e.Graphics.DrawImage(m_printImages[m_currentPage], new Point(0, 0)); m_currentPage++; e.HasMorePages = m_currentPage < m_pagesHigh; } }//end PrintEngine class public class MyPrintPreviewDialog : KryptonForm { public PrintDocument Document { get { return m_printPreviewControl.Document; } set { m_printPreviewControl.Document = value; m_printPreviewControl.InvalidatePreview(); } } public MyPrintPreviewDialog() { InitializeComponent(); m_printPreviewControl = new PrintPreviewControl(); m_printPreviewControl.StartPage = 0; } private void MyPrintPreviewDialog_Load(object sender, EventArgs e) { m_printPreviewControl.Document.DefaultPageSettings = new PageSettings(); m_printPreviewControl.Document.PrinterSettings = new PrinterSettings(); m_printPreviewControl.InvalidatePreview(); } }//end MyPrintPreviewDialog class

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• Delphi: Minimize application to systray

  - by marco92w

  I want to minimize a Delphi application to the systray instead of the task bar. The necessary steps seem to be the following: Create icon which should then be displayed in the systray. When the user clicks the [-] to minimize the application, do the following: Hide the form. Add the icon (step #1) to the systray. Hide/delete the application's entry in the task bar. When the user double-clicks the application's icon in the systray, do the following: Show the form. Un-minimize the application again and bring it to the front. If "WindowState" is "WS_Minimized" set to "WS_Normal". Hide/delete the application's icon in the systray. When the user terminates the application, do the following: Hide/delete the application's icon in the systray. That's it. Right? How could one implement this in Delphi? I've found the following code but I don't know why it works. It doesn't follow my steps described above ... unit uMinimizeToTray; interface uses Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms, Dialogs, StdCtrls, ShellApi; const WM_NOTIFYICON = WM_USER+333; type TMinimizeToTray = class(TForm) procedure FormCreate(Sender: TObject); procedure FormClose(Sender: TObject; var Action: TCloseAction); procedure CMClickIcon(var msg: TMessage); message WM_NOTIFYICON; private { Private-Deklarationen } public { Public-Deklarationen } end; var MinimizeToTray: TMinimizeToTray; implementation {$R *.dfm} procedure TMinimizeToTray.CMClickIcon(var msg: TMessage); begin if msg.lparam = WM_LBUTTONDBLCLK then Show; end; procedure TMinimizeToTray.FormCreate(Sender: TObject); VAR tnid: TNotifyIconData; HMainIcon: HICON; begin HMainIcon := LoadIcon(MainInstance, 'MAINICON'); Shell_NotifyIcon(NIM_DELETE, @tnid); tnid.cbSize := sizeof(TNotifyIconData); tnid.Wnd := handle; tnid.uID := 123; tnid.uFlags := NIF_MESSAGE or NIF_ICON or NIF_TIP; tnid.uCallbackMessage := WM_NOTIFYICON; tnid.hIcon := HMainIcon; tnid.szTip := 'Tooltip'; Shell_NotifyIcon(NIM_ADD, @tnid); end; procedure TMinimizeToTray.FormClose(Sender: TObject; var Action: TCloseAction); begin Action := caNone; Hide; end; end.

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• Cant full read querystring data in mvc4 application using a class array as input to action

  - by Anders Lindén

  I have made a mvc4 application and I have a Controller that outputs a png file like this: using System.Drawing; using System.Drawing.Drawing2D; using System.Drawing.Imaging; using System.Drawing.Text; using System.IO; using System.Web.Mvc; using Foobar.Classes; namespace Foobar.Controllers { public class ImageController : Controller { public ActionResult Index(Label[] labels) { var bmp = new Bitmap(400, 300); var pen = new Pen(Color.Black); var font = new Font("arial", 20); var g = Graphics.FromImage(bmp); g.SmoothingMode = SmoothingMode.HighQuality; g.TextRenderingHint = TextRenderingHint.AntiAliasGridFit; if (labels != null) { g.DrawString("" + labels.Length, font, pen.Brush, 20, 20); if (labels.Length > 0) { g.DrawString("" + labels[0].label, font, pen.Brush, 20, 40); } } var stream = new MemoryStream(); bmp.Save(stream, ImageFormat.Png); stream.Position = 0; return File(stream, "image/png"); } } } The Label class looks like this: using System; using System.Collections.Generic; using System.Linq; using System.Web; namespace Foobar.Classes { public class Label { public string label { get; set; } public int fontsize { get; set; } } } When I run my controller having this in the url: http://localhost:57775/image?labels[0][label]=Text+rad+1&labels[0][fontsize]=5&labels[1][fontsize]=5&labels[2][fontsize]=5 I get the correct amount of labels, so the image will show 3. But the instances of Label will not get its data members fill in. I have also tried to do this using plain variables (not properties). If they were filled in, the image would actually show "3" and "Text rad 1". So what do I put in the class "Label" to have the properties right? Should there be some kind of annotation? Where do I read about this?

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• Use native HBitmap in C# while preserving alpha channel/transparency. Please check this code, it works on my computer...

  - by David

  Let's say I get a HBITMAP object/handle from a native Windows function. I can convert it to a managed bitmap using Bitmap.FromHbitmap(nativeHBitmap), but if the native image has transparency information (alpha channel), it is lost by this conversion. There are a few questions on Stack Overflow regarding this issue. Using information from the first answer of this question (How to draw ARGB bitmap using GDI+?), I wrote a piece of code that I've tried and it works. It basically gets the native HBitmap width, height and the pointer to the location of the pixel data using GetObject and the BITMAP structure, and then calls the managed Bitmap constructor: Bitmap managedBitmap = new Bitmap(bitmapStruct.bmWidth, bitmapStruct.bmHeight, bitmapStruct.bmWidth * 4, PixelFormat.Format32bppArgb, bitmapStruct.bmBits); As I understand (please correct me if I'm wrong), this does not copy the actual pixel data from the native HBitmap to the managed bitmap, it simply points the managed bitmap to the pixel data from the native HBitmap. And I don't draw the bitmap here on another Graphics (DC) or on another bitmap, to avoid unnecessary memory copying, especially for large bitmaps. I can simply assign this bitmap to a PictureBox control or the the Form BackgroundImage property. And it works, the bitmap is displayed correctly, using transparency. When I no longer use the bitmap, I make sure the BackgroundImage property is no longer pointing to the bitmap, and I dispose both the managed bitmap and the native HBitmap. The Question: Can you tell me if this reasoning and code seems correct. I hope I will not get some unexpected behaviors or errors. And I hope I'm freeing all the memory and objects correctly. private void Example() { IntPtr nativeHBitmap = IntPtr.Zero; /* Get the native HBitmap object from a Windows function here */ // Create the BITMAP structure and get info from our nativeHBitmap NativeMethods.BITMAP bitmapStruct = new NativeMethods.BITMAP(); NativeMethods.GetObjectBitmap(nativeHBitmap, Marshal.SizeOf(bitmapStruct), ref bitmapStruct); // Create the managed bitmap using the pointer to the pixel data of the native HBitmap Bitmap managedBitmap = new Bitmap( bitmapStruct.bmWidth, bitmapStruct.bmHeight, bitmapStruct.bmWidth * 4, PixelFormat.Format32bppArgb, bitmapStruct.bmBits); // Show the bitmap this.BackgroundImage = managedBitmap; /* Run the program, use the image */ MessageBox.Show("running..."); // When the image is no longer needed, dispose both the managed Bitmap object and the native HBitmap this.BackgroundImage = null; managedBitmap.Dispose(); NativeMethods.DeleteObject(nativeHBitmap); } internal static class NativeMethods { [StructLayout(LayoutKind.Sequential)] public struct BITMAP { public int bmType; public int bmWidth; public int bmHeight; public int bmWidthBytes; public ushort bmPlanes; public ushort bmBitsPixel; public IntPtr bmBits; } [DllImport("gdi32", CharSet = CharSet.Auto, EntryPoint = "GetObject")] public static extern int GetObjectBitmap(IntPtr hObject, int nCount, ref BITMAP lpObject); [DllImport("gdi32.dll")] internal static extern bool DeleteObject(IntPtr hObject); }

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• Drawing a texture with an alpha channel doesn't work -- draws black

  - by DevDevDev

  I am modifying GLPaint to use a different background, so in this case it is white. Anyway the existing stamp they are using assumes the background is black, so I made a new background with an alpha channel. When I draw on the canvas it is still black, what gives? When I actually draw, I just bind the texture and it works. Something is wrong in this initialization. Here is the photo - (id)initWithCoder:(NSCoder*)coder { CGImageRef brushImage; CGContextRef brushContext; GLubyte *brushData; size_t width, height; if (self = [super initWithCoder:coder]) { CAEAGLLayer *eaglLayer = (CAEAGLLayer *)self.layer; eaglLayer.opaque = YES; // In this application, we want to retain the EAGLDrawable contents after a call to presentRenderbuffer. eaglLayer.drawableProperties = [NSDictionary dictionaryWithObjectsAndKeys: [NSNumber numberWithBool:YES], kEAGLDrawablePropertyRetainedBacking, kEAGLColorFormatRGBA8, kEAGLDrawablePropertyColorFormat, nil]; context = [[EAGLContext alloc] initWithAPI:kEAGLRenderingAPIOpenGLES1]; if (!context || ![EAGLContext setCurrentContext:context]) { [self release]; return nil; } // Create a texture from an image // First create a UIImage object from the data in a image file, and then extract the Core Graphics image brushImage = [UIImage imageNamed:@"test.png"].CGImage; // Get the width and height of the image width = CGImageGetWidth(brushImage); height = CGImageGetHeight(brushImage); // Texture dimensions must be a power of 2. If you write an application that allows users to supply an image, // you'll want to add code that checks the dimensions and takes appropriate action if they are not a power of 2. // Make sure the image exists if(brushImage) { brushData = (GLubyte *) calloc(width * height * 4, sizeof(GLubyte)); brushContext = CGBitmapContextCreate(brushData, width, width, 8, width * 4, CGImageGetColorSpace(brushImage), kCGImageAlphaPremultipliedLast); CGContextDrawImage(brushContext, CGRectMake(0.0, 0.0, (CGFloat)width, (CGFloat)height), brushImage); CGContextRelease(brushContext); glGenTextures(1, &brushTexture); glBindTexture(GL_TEXTURE_2D, brushTexture); glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, brushData); free(brushData); } //Set up OpenGL states glMatrixMode(GL_PROJECTION); CGRect frame = self.bounds; glOrthof(0, frame.size.width, 0, frame.size.height, -1, 1); glViewport(0, 0, frame.size.width, frame.size.height); glMatrixMode(GL_MODELVIEW); glDisable(GL_DITHER); glEnable(GL_TEXTURE_2D); glEnable(GL_BLEND); glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_DST_ALPHA); glEnable(GL_POINT_SPRITE_OES); glTexEnvf(GL_POINT_SPRITE_OES, GL_COORD_REPLACE_OES, GL_TRUE); glPointSize(width / kBrushScale); } return self; }

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• Adding Parsekit To An Xcode Project

  - by Garry

  I am trying to add the Parsekit framework to my OSX Xcode project. I've never added a 3rd party framework before and I can't get it to work right. I dragged the included Xcode project into my 'Groups & Files' pane and chose to Add it to my project. I then dragged Parsekit.framework underneath the Link Binary With Libraries heading. Then I double-clicked my target app and added Parsekit as a Direct Dependency. I also added libicucore.dylib as a Linked Library (as it says to do this on their site). Finally, in the Build settings tab of my target info I set the Header Search Paths to /Users/path/to/include/directory and the Other Linker Flags to -ObjC -all_load. Running this as a debug build work fine with no errors. However, when I build my app to release and then try to run the executable created, the app fails to load with the following error message: MyApp cannot be opened because of a problem. Check with the developer to make sure myApp works with this version of Mac OS X. Here is the dump from the crash reporter: Process: MyApp [11658] Path: /Users/Garry/Programming/Xcode/Mac/MyApp/build/Release/MyApp.app/Contents/MacOS/MyApp Identifier: com.yourcompany.MyApp Version: ??? (???) Code Type: X86-64 (Native) Parent Process: launchd [135] Date/Time: 2010-05-24 17:08:08.475 +0100 OS Version: Mac OS X 10.6.3 (10D573) Report Version: 6Interval Since Last Report: 133300 sec Crashes Since Last Report: 3 Per-App Crashes Since Last Report: 3 Anonymous UUID: DF0265E4-B5A0-45E1-8B71-D52A27CFDDCA Exception Type: EXC_BREAKPOINT (SIGTRAP) Exception Codes: 0x0000000000000002, 0x0000000000000000 Crashed Thread: 0 Dyld Error Message: Library not loaded: @executable_path/../Frameworks/ParseKit.framework/Versions/A/ParseKit Referenced from: /Users/Garry/Programming/Xcode/Mac/MyApp/build/Release/MyApp.app/Contents/MacOS/MyApp Reason: image not found Model: MacBookPro5,5, BootROM MBP55.00AC.B03, 2 processors, Intel Core 2 Duo, 2.53 GHz, 4 GB, SMC 1.47f2 Graphics: NVIDIA GeForce 9400M, NVIDIA GeForce 9400M, PCI, 256 MB Memory Module: global_name AirPort: spairport_wireless_card_type_airport_extreme (0x14E4, 0x8D), Broadcom BCM43xx 1.0 (5.10.91.27) Bluetooth: Version 2.3.1f4, 2 service, 2 devices, 1 incoming serial ports Network Service: AirPort, AirPort, en1 Network Service: Ethernet Adaptor (en6), Ethernet, en6 Serial ATA Device: Hitachi HTS545025B9SA02, 232.89 GB Serial ATA Device: HL-DT-ST DVDRW GS23N USB Device: Built-in iSight, 0x05ac (Apple Inc.), 0x8507, 0x24400000 USB Device: Internal Memory Card Reader, 0x05ac (Apple Inc.), 0x8403, 0x26500000 USB Device: IR Receiver, 0x05ac (Apple Inc.), 0x8242, 0x04500000 USB Device: Apple Internal Keyboard / Trackpad, 0x05ac (Apple Inc.), 0x0237, 0x04600000 USB Device: BRCM2046 Hub, 0x0a5c (Broadcom Corp.), 0x4500, 0x06100000 USB Device: Bluetooth USB Host Controller, 0x05ac (Apple Inc.), 0x8213, 0x06110000 After building the app, in addition to the executable file, Xcode is also creating a file called MyApp.app.dSYM. Any idea what that is?? I am developing with Xcode 3.2.2 on an Intel MBP running 10.6.3. Many thanks for any help offered.

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• Is this slow WPF TextBlock performance expected?

  - by Ben Schoepke

  Hi, I am doing some benchmarking to determine if I can use WPF for a new product. However, early performance results are disappointing. I made a quick app that uses data binding to display a bunch of random text inside of a list box every 100 ms and it was eating up ~15% CPU. So I made another quick app that skipped the data binding/data template scheme and does nothing but update 10 TextBlocks that are inside of a ListBox every 100 ms (the actual product wouldn't require 100 ms updates, more like 500 ms max, but this is a stress test). I'm still seeing ~10-15% CPU usage. Why is this so high? Is it because of all the garbage strings? Here's the XAML: <Grid> <ListBox x:Name="numericsListBox"> <ListBox.Resources> <Style TargetType="TextBlock"> <Setter Property="FontSize" Value="48"/> <Setter Property="Width" Value="300"/> </Style> </ListBox.Resources> <TextBlock/> <TextBlock/> <TextBlock/> <TextBlock/> <TextBlock/> <TextBlock/> <TextBlock/> <TextBlock/> <TextBlock/> <TextBlock/> </ListBox> </Grid> Here's the code behind: public partial class Window1 : Window { private int _count = 0; public Window1() { InitializeComponent(); } private void OnLoad(object sender, RoutedEventArgs e) { var t = new DispatcherTimer(TimeSpan.FromSeconds(0.1), DispatcherPriority.Normal, UpdateNumerics, Dispatcher); t.Start(); } private void UpdateNumerics(object sender, EventArgs e) { ++_count; foreach (object textBlock in numericsListBox.Items) { var t = textBlock as TextBlock; if (t != null) t.Text = _count.ToString(); } } } Any ideas for a better way to quickly render text? My computer: XP SP3, 2.26 GHz Core 2 Duo, 4 GB RAM, Intel 4500 HD integrated graphics. And that is an order of magnitude beefier than the hardware I'd need to develop for in the real product.

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• pager problem with drupal and taxonomy

  - by andersandersson666

  Ok, so this is probably a silly question, but i thought i'd put it out there anyway: I know it's a strange solution to a simple problem, but i needed to control the listing of the nodes in the taxonomy pages, which i didn't feel i got the traditional way. So i went ahead and created a module that fetches the nodes based on taxonomy (taxonomy_select_nodes()), and i wanted a pager to go along with that. Here's the code: function theModule_recipeList(){ $path = drupal_get_path_alias($_GET['q']); $args = explode("/",$path); $themePath = drupal_get_path("theme", "theTheme"); $term = taxonomy_get_term_by_name($args[1]); $tid = $term[0]->tid; $nodes = taxonomy_select_nodes(array($tid)); $output = "<div id='recipeListWrapper'>"; while($row = db_fetch_object($nodes)){ $node = node_load($row->nid); if($node->uid != 1){ $userClass="user"; } else{ $userClass="admin"; } $output .= " <div class='receptThumbnailWrapper'> <div class='wrapper'> <img src='".base_path().$themePath."/graphics/recept-default-small.png' /> <h3><a href='".base_path() . $node->path."'>".$node->title."</a></h3> <div class='recipeType $userClass'></div> </div> </div> "; } $output .= "</div>"; return $output; } Now, the module works as i planned and all (even though it is a duct tape sort of solution, i know), and the pager prints and works. The problem is that the pager prints before anything else. I suspect that it is because i call taxonomy_select_nodes before $output is returned, but i need it to get the nodes i want. Please, any suggestions is greatly appreciated. /Anders

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• How to save image drawn on a JPanel?

  - by swift

  I have a panel with transparent background which i use to draw an image. now problem here is when i draw anything on panel and save the image as a JPEG file its saving the image with black background but i want it to be saved as same, as i draw on the panel. what should be done for this? plz guide me j Client.java public class Client extends Thread { static DatagramSocket datasocket; static DatagramSocket socket; Point point; Whiteboard board; Virtualboard virtualboard; JLayeredPane layerpane; BufferedImage image; public Client(DatagramSocket datasocket) { Client.datasocket=datasocket; } //This function is responsible to connect to the server public static void connect() { try { socket=new DatagramSocket (9000); //client connection socket port= 9000 datasocket=new DatagramSocket (9005); //client data socket port= 9002 ByteArrayOutputStream baos=new ByteArrayOutputStream(); DataOutputStream dos=new DataOutputStream(baos); //this is to tell server that this is a connection request dos.writeChar('c'); dos.close(); byte[]data=baos.toByteArray(); //Server IP address InetAddress ip=InetAddress.getByName("10.123.97.154"); //create the UDP packet DatagramPacket packet=new DatagramPacket(data, data.length,ip , 8000); socket.send(packet); Client client=new Client(datasocket); client.createFrame(); client.run(); } catch(Exception e) { e.printStackTrace(); } } //This function is to create the JFrame public void createFrame() { JFrame frame=new JFrame("Whiteboard"); frame.setVisible(true); frame.setBackground(Color.black); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.setSize(680,501); frame.addWindowListener(new WindowAdapter() { public void windowOpened(WindowEvent e) {} public void windowClosing(WindowEvent e) { close(); } }); layerpane=frame.getLayeredPane(); board= new Whiteboard(datasocket); image = new BufferedImage(590,463, BufferedImage.TYPE_INT_ARGB); board.setBounds(74,2,590,463); board.setImage(image); virtualboard=new Virtualboard(); virtualboard.setImage(image); virtualboard.setBounds(74,2,590,463); layerpane.add(virtualboard,new Integer(2));//Panel where remote user draws layerpane.add(board,new Integer(3)); layerpane.add(board.colourButtons(),new Integer(1)); layerpane.add(board.shapeButtons(),new Integer(0)); //frame.add(paper.addButtons(),BorderLayout.WEST); } /* * This function is overridden from the thread class * This function listens for incoming packets from the server * which contains the points drawn by the other client */ public void run () { while (true) { try { byte[] buffer = new byte[512]; DatagramPacket packet = new DatagramPacket(buffer, buffer.length); datasocket.receive(packet); InputStream in=new ByteArrayInputStream(packet.getData(), packet.getOffset(),packet.getLength()); DataInputStream din=new DataInputStream(in); int x=din.readInt(); int y=din.readInt(); String varname=din.readLine(); String var[]=varname.split("-",4); point=new Point(x,y); virtualboard.addPoint(point, var[0], var[1],var[2],var[3]); } catch (IOException ex) { ex.printStackTrace(); } } } //This function is to broadcast the newly drawn point to the server public void broadcast (Point p,String varname,String shape,String event, String color) { try { ByteArrayOutputStream baos=new ByteArrayOutputStream(); DataOutputStream dos=new DataOutputStream(baos); dos.writeInt(p.x); dos.writeInt(p.y); dos.writeBytes(varname); dos.writeBytes("-"); dos.writeBytes(shape); dos.writeBytes("-"); dos.writeBytes(event); dos.writeBytes("-"); dos.writeBytes(color); dos.close(); byte[]data=baos.toByteArray(); InetAddress ip=InetAddress.getByName("10.123.97.154"); DatagramPacket packet=new DatagramPacket(data, data.length,ip , 8002); datasocket.send(packet); } catch (Exception e) { e.printStackTrace(); } } //This function is to close the client's connection with the server public void close() { try { ByteArrayOutputStream baos=new ByteArrayOutputStream(); DataOutputStream dos=new DataOutputStream(baos); //This is to tell server that this is request to remove the client dos.writeChar('r'); dos.close(); byte[]data=baos.toByteArray(); //Server IP address InetAddress ip=InetAddress.getByName("10.123.97.154"); DatagramPacket packet=new DatagramPacket(data, data.length,ip , 8000); socket.send(packet); System.out.println("closed"); } catch(Exception e) { e.printStackTrace(); } } public static void main(String[] args) throws Exception { connect(); } } Whiteboard.java class Whiteboard extends JPanel implements MouseListener,MouseMotionListener,ActionListener,KeyListener { BufferedImage image; Boolean tooltip=false; int post; String shape; String selectedcolor="black"; Color color=Color.black; //Color color=Color.white; Point start; Point end; Point mp; Point tip; int keycode; String fillshape; Point fillstart=new Point(); Point fillend=new Point(); int noofside; Button r=new Button("rect"); Button rectangle=new Button("rect"); Button line=new Button("line"); Button roundrect=new Button("roundrect"); Button polygon=new Button("poly"); Button text=new Button("text"); JButton save=new JButton("Save"); Button elipse=new Button("elipse"); ImageIcon fillicon=new ImageIcon("images/fill.jpg"); JButton fill=new JButton(fillicon); ImageIcon erasericon=new ImageIcon("images/eraser.gif"); JButton erase=new JButton(erasericon); JButton[] colourbutton=new JButton[28]; String selected; Point label; String key=""; int ex,ey;//eraser DatagramSocket dataSocket; JButton button = new JButton("test"); Client client; Boolean first; int w,h; public Whiteboard(DatagramSocket dataSocket) { try { UIManager.setLookAndFeel( UIManager.getCrossPlatformLookAndFeelClassName()); } catch (Exception e) { e.printStackTrace(); } setLayout(null); setOpaque(false); setBackground(new Color(237,237,237)); this.dataSocket=dataSocket; client=new Client(dataSocket); addKeyListener(this); addMouseListener(this); addMouseMotionListener(this); setBorder(BorderFactory.createLineBorder(Color.black)); } public void paintComponent(Graphics g) { try { super.paintComponent(g); g.drawImage(image, 0, 0, this); Graphics2D g2 = (Graphics2D)g; if(color!=null) g2.setPaint(color); if(start!=null && end!=null) { if(selected==("elipse")) g2.drawOval(start.x, start.y,(end.x-start.x),(end.y-start.y)); else if(selected==("rect")) g2.drawRect(start.x, start.y, (end.x-start.x),(end.y-start.y)); else if(selected==("rrect")) g2.drawRoundRect(start.x, start.y, (end.x-start.x),(end.y-start.y),11,11); else if(selected==("line")) g2.drawLine(start.x,start.y,end.x,end.y); else if(selected==("poly")) { g2.drawLine(start.x,start.y,end.x,end.y); client.broadcast(start, "start", "poly", "drag", selectedcolor); client.broadcast(end, "end", "poly", "drag", selectedcolor); } } if(tooltip==true) { System.out.println(selected); if(selected=="text") { g2.drawString("|", tip.x, tip.y-5); g2.drawString("Click to add text", tip.x+10, tip.y+23); g2.drawString("__", label.x+post, label.y); } if(selected=="erase") { g2.setPaint(new Color(237,237,237)); g2.fillRect(tip.x-10,tip.y-10,10,10); g2.setPaint(color); g2.drawRect(tip.x-10,tip.y-10,10,10); } } } catch(Exception e) {} } //Function to draw the shape on image public void draw() { Graphics2D g2 = (Graphics2D) image.createGraphics(); Font font=new Font("Times New Roman",Font.PLAIN,14); g2.setFont(font); g2.setPaint(color); if(start!=null && end!=null) { if(selected=="line") g2.drawLine(start.x, start.y, end.x, end.y); else if(selected=="elipse") g2.drawOval(start.x, start.y, (end.x-start.x),(end.y-start.y)); else if(selected=="rect") g2.drawRect(start.x, start.y, (end.x-start.x),(end.y-start.y)); else if(selected==("rrect")) g2.drawRoundRect(start.x, start.y, (end.x-start.x),(end.y-start.y),11,11); else if(selected==("poly")) { g2.drawLine(start.x,start.y,end.x,end.y); client.broadcast(start, "start", "poly", "release", selectedcolor); client.broadcast(end, "end", "poly", "release", selectedcolor); } fillstart=start; fillend=end; fillshape=selected; } if(selected!="poly") { start=null; end=null; } if(label!=null) { if(selected==("text")) { g2.drawString(key,label.x,label.y); client.broadcast(label, key, "text", "release", selectedcolor); } } repaint(); g2.dispose(); } //Function which provides the erase functionality public void erase() { Graphics2D pic=(Graphics2D) image.createGraphics(); Color erasecolor=new Color(237,237,237); pic.setPaint(erasecolor); if(start!=null) pic.fillRect(start.x-10, start.y-10, 10, 10); } //To set the size of the image public void setImage(BufferedImage image) { this.image = image; } //Function to add buttons into the panel, calling this function returns a panel public JPanel shapeButtons() { JPanel shape=new JPanel(); shape.setBackground(new Color(181, 197, 210)); shape.setLayout(new GridLayout(5,2,2,4)); shape.setBounds(0, 2, 74, 166); rectangle.addActionListener(this); rectangle.setToolTipText("Rectangle"); line.addActionListener( this); line.setToolTipText("Line"); erase.addActionListener(this); erase.setToolTipText("Eraser"); roundrect.addActionListener(this); roundrect.setToolTipText("Round edge Rectangle"); polygon.addActionListener(this); polygon.setToolTipText("Polygon"); text.addActionListener(this); text.setToolTipText("Text"); fill.addActionListener(this); fill.setToolTipText("Fill with colour"); elipse.addActionListener(this); elipse.setToolTipText("Elipse"); save.addActionListener(this); shape.add(elipse); shape.add(rectangle); shape.add(roundrect); shape.add(polygon); shape.add(line); shape.add(text); shape.add(fill); shape.add(erase); shape.add(save); return shape; } public JPanel colourButtons() { JPanel colourbox=new JPanel(); colourbox.setBackground(new Color(181, 197, 210)); colourbox.setLayout(new GridLayout(8,2,8,8)); colourbox.setBounds(0,323,70,140); //colourbox.add(empty); for(int i=0;i<16;i++) { colourbutton[i]=new JButton(); colourbox.add(colourbutton[i]); if(i==0) colourbutton[0].setBackground(Color.black); else if(i==1) colourbutton[1].setBackground(Color.white); else if(i==2) colourbutton[2].setBackground(Color.red); else if(i==3) colourbutton[3].setBackground(Color.orange); else if(i==4) colourbutton[4].setBackground(Color.blue); else if(i==5) colourbutton[5].setBackground(Color.green); else if(i==6) colourbutton[6].setBackground(Color.pink); else if(i==7) colourbutton[7].setBackground(Color.magenta); else if(i==8) colourbutton[8].setBackground(Color.cyan); else if(i==9) colourbutton[9].setBackground(Color.black); else if(i==10) colourbutton[10].setBackground(Color.yellow); else if(i==11) colourbutton[11].setBackground(new Color(131,168,43)); else if(i==12) colourbutton[12].setBackground(new Color(132,0,210)); else if(i==13) colourbutton[13].setBackground(new Color(193,17,92)); else if(i==14) colourbutton[14].setBackground(new Color(129,82,50)); else if(i==15) colourbutton[15].setBackground(new Color(64,128,128)); colourbutton[i].addActionListener(this); } return colourbox; } public void fill() { if(selected=="fill") { Graphics2D g2 = (Graphics2D) image.getGraphics(); g2.setPaint(color); System.out.println("Fill"); if(fillshape=="elipse") g2.fillOval(fillstart.x, fillstart.y, (fillend.x-fillstart.x),(fillend.y-fillstart.y)); else if(fillshape=="rect") g2.fillRect(fillstart.x, fillstart.y, (fillend.x-fillstart.x),(fillend.y-fillstart.y)); else if(fillshape==("rrect")) g2.fillRoundRect(fillstart.x, fillstart.y, (fillend.x-fillstart.x),(fillend.y-fillstart.y),11,11); // else if(fillshape==("poly")) // g2.drawPolygon(x,y,2); } repaint(); } //To save the image drawn public void save() { try { ByteArrayOutputStream bos = new ByteArrayOutputStream(); JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(bos); JFileChooser fc = new JFileChooser(); fc.showSaveDialog(this); encoder.encode(image); byte[] jpgData = bos.toByteArray(); FileOutputStream fos = new FileOutputStream(fc.getSelectedFile()+".jpeg"); fos.write(jpgData); fos.close(); //add replce confirmation here } catch (IOException e) { System.out.println(e); } } public void mouseClicked(MouseEvent e) { } @Override public void mouseEntered(MouseEvent e) { } public void mouseExited(MouseEvent arg0) { } public void mousePressed(MouseEvent e) { if(selected=="line"||selected=="text") { start=e.getPoint(); client.broadcast(start,"start", selected,"press", selectedcolor); } else if(selected=="elipse"||selected=="rect"||selected=="rrect") mp = e.getPoint(); else if(selected=="poly") { if(first==true) { start=e.getPoint(); //client.broadcast(start,"start", selected,"press", selectedcolor); } else if(first==false) { end=e.getPoint(); repaint(); //client.broadcast(end,"end", selected,"press", selectedcolor); } } else if(selected=="erase") { start=e.getPoint(); erase(); } } public void mouseReleased(MouseEvent e) { if(selected=="text") { System.out.println("Reset"); key=""; post=0; label=new Point(); label=e.getPoint(); grabFocus(); } if(start!=null && end!=null) { if(selected=="line") { end=e.getPoint(); client.broadcast(end,"end", selected,"release", selectedcolor); draw(); } else if(selected=="elipse"||selected=="rect"||selected=="rrect") { end.x = Math.max(mp.x,e.getX()); end.y = Math.max(mp.y,e.getY()); client.broadcast(end,"end", selected,"release", selectedcolor); draw(); } else if(selected=="poly") { draw(); first=false; start=end; end=null; } } } public void mouseDragged(MouseEvent e) { if(end==null) end = new Point(); if(start==null) start = new Point(); if(selected=="line") { end=e.getPoint(); client.broadcast(end,"end", selected,"drag", selectedcolor); } else if(selected=="erase") { start=e.getPoint(); erase(); client.broadcast(start,"start", selected,"drag", selectedcolor); } else if(selected=="elipse"||selected=="rect"||selected=="rrect") { start.x = Math.min(mp.x,e.getX()); start.y = Math.min(mp.y,e.getY()); end.x = Math.max(mp.x,e.getX()); end.y = Math.max(mp.y,e.getY()); client.broadcast(start,"start", selected,"drag", selectedcolor); client.broadcast(end,"end", selected,"drag", selectedcolor); } else if(selected=="poly") end=e.getPoint(); System.out.println(tooltip); if(tooltip==true) { if(selected=="erase") { Graphics2D g2=(Graphics2D) getGraphics(); tip=e.getPoint(); g2.drawRect(tip.x-10,tip.y-10,10,10); } } repaint(); } public void mouseMoved(MouseEvent e) { if(selected=="text" ||selected=="erase") { tip=new Point(); tip=e.getPoint(); tooltip=true; repaint(); } } public void actionPerformed(ActionEvent e) { if(e.getSource()==elipse) selected="elipse"; else if(e.getSource()==line) selected="line"; else if(e.getSource()==rectangle) selected="rect"; else if(e.getSource()==erase) { selected="erase"; tooltip=true; System.out.println(selected); erase(); } else if(e.getSource()==roundrect) selected="rrect"; else if(e.getSource()==polygon) { selected="poly"; first=true; start=null; } else if(e.getSource()==text) { selected="text"; tooltip=true; } else if(e.getSource()==fill) { selected="fill"; fill(); } else if(e.getSource()==save) save(); if(e.getSource()==colourbutton[0]) { color=Color.black; selectedcolor="black"; } else if(e.getSource()==colourbutton[1]) { color=Color.white; selectedcolor="white"; } else if(e.getSource()==colourbutton[2]) { color=Color.red; selectedcolor="red"; } else if(e.getSource()==colourbutton[3]) { color=Color.orange; selectedcolor="orange"; } else if(e.getSource()==colourbutton[4]) { selectedcolor="blue"; color=Color.blue; } else if(e.getSource()==colourbutton[5]) { selectedcolor="green"; color=Color.green; } else if(e.getSource()==colourbutton[6]) { selectedcolor="pink"; color=Color.pink; } else if(e.getSource()==colourbutton[7]) { selectedcolor="magenta"; color=Color.magenta; } else if(e.getSource()==colourbutton[8]) { selectedcolor="cyan"; color=Color.cyan; } } @Override public void keyPressed(KeyEvent e) { //System.out.println(e.getKeyChar()+" : "+e.getKeyCode()); if(label!=null) { if(e.getKeyCode()==10) //Check for Enter key { label.y=label.y+14; key=""; post=0; repaint(); } else if(e.getKeyCode()==8) //Backspace { try{ Graphics2D g2 = (Graphics2D) image.getGraphics(); g2.setPaint(new Color(237,237,237)); g2.fillRect(label.x+post-7, label.y-13, 14, 17); if(post>0) post=post-6; keycode=0; key=key.substring(0, key.length()-1); System.out.println(key.substring(0, key.length())); repaint(); Point broadcastlabel=new Point(); broadcastlabel.x=label.x+post-7; broadcastlabel.y=label.y-13; client.broadcast(broadcastlabel, key, "text", "backspace", selectedcolor); } catch(Exception ex) {} } //Block invalid keys else if(!(e.getKeyCode()>=16 && e.getKeyCode()<=20 || e.getKeyCode()>=112 && e.getKeyCode()<=123 || e.getKeyCode()>=33 && e.getKeyCode()<=40 || e.getKeyCode()>=144 && e.getKeyCode()<=145 || e.getKeyCode()>=524 && e.getKeyCode()<=525 ||e.getKeyCode()==27||e.getKeyCode()==155 ||e.getKeyCode()==127)) { key=key+e.getKeyChar(); post=post+6; draw(); } } } @Override public void keyReleased(KeyEvent e) { } @Override public void keyTyped(KeyEvent e) { } } class Button extends JButton { String name; int i; public Button(String name) { this.name=name; try { UIManager.setLookAndFeel("com.sun.java.swing.plaf.windows.WindowsLookAndFeel"); } catch (Exception e) { e.printStackTrace(); } } public Button(int i) { this.i=i; } public void paintComponent(Graphics g) { super.paintComponent(g); Graphics2D g2 = (Graphics2D)g; g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON); //g2.setStroke(new BasicStroke(1.2f)); if (name == "line") g.drawLine(5,5,30,30); if (name == "elipse") g.drawOval(5,7,25,20); if (name== "rect") g.drawRect(5,5,25,23); if (name== "roundrect") g.drawRoundRect(5,5,25,23,10,10); int a[]=new int[]{20,9,20,23,20}; int b[]=new int[]{9,23,25,20,9}; if (name== "poly") g.drawPolyline(a, b, 5); if (name== "text") g.drawString("Text",8, 24); } }

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• Inherited TShape.Paint does not work after overriding Shape property

  - by DarkWalker

  I'm to code a TExpandedShape class inherited from TShape. TExpandedShape must act like TShape and be able to draw extra shapes: Polygon and Star. Here is my code unit ExpandedShape; interface uses SysUtils, WinTypes, WinProcs, Messages, Classes, Graphics, Controls, Forms, Dialogs, ExtCtrls, Windows; type TExpandedShapeType = ( stRectangle, stSquare, stRoundRect, stRoundSquare, stEllipse, stCircle, stPolygon, stStar ); TExpandedShape = class(TShape) private FShape: TExpandedShapeType; FEdgeCount: integer; procedure SetShape(const Value: TExpandedShapeType); procedure SetEdgeCount(const Value: integer); public procedure Paint; override; published property Shape : TExpandedShapeType read FShape write SetShape;// default stPolygon; property EdgeCount : integer read FEdgeCount write SetEdgeCount default 5; end; procedure Register; implementation procedure Register; begin RegisterComponents('Course', [TExpandedShape]); end; // TExpandedShape procedure TExpandedShape.Paint; begin case Shape of stStar : begin {Draw Star} end; stPolygon : begin {Draw Polygon} end; else begin {It is supposed to draw Circle, Rectangle etc, but it does not} inherited; end; end; end; procedure TExpandedShape.SetEdgeCount(const Value: integer); begin FEdgeCount := Value; Repaint; end; procedure TExpandedShape.SetShape(const Value: TExpandedShapeType); begin FShape := Value; Repaint; end; end. So, what is wrong? IMO TShape.Paint checks private value like FShape in case section and then decides what to draw. When inherited Paint method is called in my code it checks FShape value sees default 0 value [stRectangle] in there and draws it. PS: I did solve it with blackmagic way using Shape1 property instead of Shape one and if Shape1 value is not stPolygon or stStar i do like this: begin Shape := TShapeType(Shape1); inherited end; But this option is not really an option. I need a good short nice-looking one.

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• How do I use IImgCtx to get load an image with an alpha channel?

  - by fret

  I have some working code that uses IImgCtx to load images, but I can't work out how to get at the alpha channel. For images like .gif's and .png's there are transparent pixels, but using anything other than a 24-bit bitmap as a drawing surface doesn't work. For reference on the interface: http://www.codeproject.com/KB/graphics/JianImgCtxDecoder.aspx My code looks like this: IImgCtx *Ctx = 0; HRESULT hr = CoCreateInstance(CLSID_IImgCtx, NULL, CLSCTX_INPROC_SERVER, IID_IImgCtx, (LPVOID*)&Ctx); if (SUCCEEDED(hr)) { GVariant Fn = Name; hr = Ctx->Load(Fn.WStr(), 0); if (SUCCEEDED(hr)) { SIZE Size = { -1, -1 }; ULONG State = 0; while (true) { hr = Ctx->GetStateInfo(&State, &Size, false); if (SUCCEEDED(hr)) { if ((State & IMGLOAD_COMPLETE) || (State & IMGLOAD_STOPPED) || (State & IMGLOAD_ERROR)) { break; } else { LgiSleep(1); } } else break; } if (Size.cx > 0 && Size.cy > 0 && pDC.Reset(new GMemDC)) { if (pDC->Create(Size.cx, Size.cy, 32)) { HDC hDC = pDC->StartDC(); if (hDC) { RECT rc = { 0, 0, pDC->X(), pDC->Y() }; Ctx->Draw(hDC, &rc); pDC->EndDC(); } } else pDC.Reset(); } } Ctx->Release(); Where "StartDC" basically wraps CreateCompatibleDC(NULL) and "EndDC" wraps DeleteDC, with appropriate SelectObjects for the HBITMAPS etc. And pDC-Create(x, y, bit_depth) calls CreateDIBSection(...DIB_RGB_COLORS...). So it works if I create a 24 bits/pixel bitmap but has no alpha to speak of, and it leaves the 32 bits/pixel bitmap blank. Now this interface apparently is used by Internet Explorer to load images, and obviously THAT supports transparency, so I believe that it's possible to get some level of alpha out of the interface. The question is how? (I also have fall back code that will call libpng/libjpeg/my .gif loader etc)

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• OpenGL Polygon Stipple Not Working On Different Machine

  - by FranticPedantic

  I have a situation where I am trying to draw a semi-transparent rectangle over a background that is not using openGL and so I can not use blending. I decided to use polygon stippling for a 'screen door transparency' effect as recommended by some. It works fine on my machine and some others, but on some machines with slightly old Intel graphics cards it's failing to render the rectangle at all. If I turn off polygon stipple, it renders fine (but without the stipple). I have compared many of the state variables that I thought might affect it (see code) between machines and they are all the same, and I get no errors. static const GLubyte stipplePatternChkr[128]; //definition omitted for clarity //but works on my machine // stipple the box glPolygonMode(GL_FRONT_AND_BACK, GL_FILL); glColor4ubv(Color(COLORREF_PADGRAY)); glEnable(GL_POLYGON_STIPPLE); glPolygonStipple(stipplePatternChkr); CRect rcStipple(dim); rcStipple.DeflateRect(padding - 1, padding - 1); glBegin(GL_QUADS); glVertex2i(rcStipple.left, rcStipple.bottom); glVertex2i(rcStipple.right, rcStipple.bottom); glVertex2i(rcStipple.right, rcStipple.top); glVertex2i(rcStipple.left, rcStipple.top); glEnd(); glDisable(GL_POLYGON_STIPPLE); int err = glGetError(); if (err != GL_NO_ERROR) { TRACE("glError(%s: %s)\n", s, gluErrorString(err)); } float x; glGetFloatv(GL_UNPACK_ALIGNMENT, &x); TRACE("unpack alignment %f\n", x); glGetFloatv(GL_UNPACK_IMAGE_HEIGHT, &x); TRACE("unpack height %f\n", x); glGetFloatv(GL_UNPACK_LSB_FIRST, &x); TRACE("unpack lsb %f\n", x); glGetFloatv(GL_UNPACK_ROW_LENGTH, &x); TRACE("unpack length %f\n", x); glGetFloatv(GL_UNPACK_SKIP_PIXELS, &x); TRACE("upnack skip %f\n", x); glGetFloatv(GL_UNPACK_SWAP_BYTES, &x); TRACE("upnack swap %f\n", x);

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