Search Results

Search found 4032 results on 162 pages for 'libreoffice draw'.

Page 90/162 | < Previous Page | 86 87 88 89 90 91 92 93 94 95 96 97  | Next Page >

  • Delete rectangle using c#?

    - by C. Karunarathne
    Can I delete the old rectangle which I have drawn and draw a new rectangle? private void panel1_MouseClick(object sender, MouseEventArgs e) { Graphics g = this.panel1.CreateGraphics(); Pen pen = new Pen(Color.Black, 2); g.DrawRectangle(pen, 100,100, 100, 200); g.dispose(); }

    Read the article

  • NSColor transparency on black background?

    - by Alex Zielenski
    In the background of my view, I draw a light blue color. And in the middle, i have a square box that is supposed to have an even lighter gray in it that has a 20% transparency. But for some reason the transparency is on top of a black background instead of a blue. I'm sorry If i'm not being clear.

    Read the article

  • Making a Grid in an NSView

    - by Hooligancat
    I currently have an NSView that draws a grid pattern (essentially a guide of horizontal and vertical lines) with the idea being that a user can change the spacing of the grid and the color of the grid. The purpose of the grid is to act as a guideline for the user when lining up objects. Everything works just fine with one exception. When I resize the NSWindow by dragging the resize handle, if my grid spacing is particularly small (say 10 pixels). the drag resize becomes lethargic in nature. My drawRect code for the grid is as follows: -(void)drawRect:(NSRect)dirtyRect { NSRect thisViewSize = [self bounds]; // Set the line color [[NSColor colorWithDeviceRed:0 green:(255/255.0) blue:(255/255.0) alpha:1] set]; // Draw the vertical lines first NSBezierPath * verticalLinePath = [NSBezierPath bezierPath]; int gridWidth = thisViewSize.size.width; int gridHeight = thisViewSize.size.height; int i; while (i < gridWidth) { i = i + [self currentSpacing]; NSPoint startPoint = {i,0}; NSPoint endPoint = {i, gridHeight}; [verticalLinePath setLineWidth:1]; [verticalLinePath moveToPoint:startPoint]; [verticalLinePath lineToPoint:endPoint]; [verticalLinePath stroke]; } // Draw the horizontal lines NSBezierPath * horizontalLinePath = [NSBezierPath bezierPath]; i = 0; while (i < gridHeight) { i = i + [self currentSpacing]; NSPoint startPoint = {0,i}; NSPoint endPoint = {gridWidth, i}; [horizontalLinePath setLineWidth:1]; [horizontalLinePath moveToPoint:startPoint]; [horizontalLinePath lineToPoint:endPoint]; [horizontalLinePath stroke]; } } I suspect this is entirely to do with the way that I am drawing the grid and am open to suggestions on how I might better go about it. I can see where the inefficiency is coming in, drag-resizing the NSWindow is constantly calling the drawRect in this view as it resizes, and the closer the grid, the more calculations per pixel drag of the parent window. I was thinking of hiding the view on the resize of the window, but it doesn't feel as dynamic. I want the user experience to be very smooth without any perceived delay or flickering. Does anyone have any ideas on a better or more efficient method to drawing the grid? All help, as always, very much appreciated.

    Read the article

  • Use only alpha channel of texture in OpenGL?

    - by Chris
    Hey, I'm trying to draw a constant color to the framebuffer and blend it using the alpha channel from an RGBA texture. I've been looking at glBlendFunc and glBlendColor, but can't seem to figure out a way to ignore the RGB values from the texture. I'm thinking I'll have to pull out the alpha values myself and make a second texture with GL_ALPHA. Is there a better way to do this? Thanks!

    Read the article

  • How i print the text using CGContextSetTextPosition?

    - by Rajendra Bhole
    hi, i write an application in which i want to write/draw the text using CGContext functions such as CGContextSetTextPosition, CGContextSetTextDrawingMode, etc. I written an code but it can't be work, CGContextSetTextDrawingMode (ctx , kCGTextFillStroke); CGContextSetRGBFillColor(ctx, 5.0, 5.0, 5.0, 1.0); CGContextSelectFont(ctx, "Times", 10, kCGEncodingMacRoman); CGContextShowTextAtPoint (ctx, 60.0, 426.0, (const char*)"Sat", (size_t)20); The above code is appropriate or not?

    Read the article

  • Standalone diagrams with TikZ?

    - by Qiaochu Yuan
    I'm using TikZ to draw diagrams in LaTeX that I then want to isolate as image files to put online. My guess is there is a way to extract these diagrams directly without having to tease them out of the finished .pdf file. How would I go about doing that? (If it matters, I'm using TeXnicCenter.)

    Read the article

  • drawPosText() in android.graphics.Canvas, What is origin?

    - by vladikoff
    drawPosText(char[] text, int index, int count, float[] pos, Paint paint) Draw the text in the array, with each character's origin specified by the pos array. Does anyone know where exactly does drawPosText consider the "origin" to be, since you are specifying "origin" as coordinate pairs; i.e., is it bottom-left of character, center, what? Also how does drawPosText calculate character height when it draws?

    Read the article

  • Qt4: QPrinter / QPainter only print the first document

    - by hurikhan77
    In Qt4, I'm initializing the printer in the main.cpp in the following way: mw->printer = new QPrinter(QPrinter::HighResolution); mw->printer->setPaperSize(QPrinter::A5); mw->printer->setNumCopies(2); mw->printer->setColorMode(QPrinter::GrayScale); QPrintDialog *dialog = new QPrintDialog(mw->printer, mw); dialog->setWindowTitle(QObject::tr("Printer Setup")); if (dialog->exec() == QDialog::Accepted) { mw->printer->setFullPage(TRUE); return a.exec (); } This works fine for printing the first document from the application: qDebug("Printing"); QPainter p; if (!p.begin(printer)) { qDebug("Printing aborted"); return; } Q3PaintDeviceMetrics metrics(p.device()); int dpiy = metrics.logicalDpiY(); int dpix = metrics.logicalDpiX(); int tmargin = (int) ((marginTop / 2.54) * dpiy); int bmargin = (int) ((marginBottom / 2.54) * dpiy); int lmargin = (int) ((marginLeft / 2.54) * dpix); int rmargin = (int) ((marginRight / 2.54) * dpix); QRect body(lmargin, tmargin, metrics.width() - (lmargin + rmargin), metrics.height() - (tmargin + bmargin)); QString document; /* ... app logic to write a richtext document */ Q3SimpleRichText richText(QString("<qt>%1</qt>").arg(document), QFont("Arial", fontSize)); richText.setWidth(&p, body.width()); QRect view(body); int page = 1; do { // draw text richText.draw(&p, body.left(), body.top(), view, colorGroup()); view.moveBy(0, body.height()); p.translate(0, -body.height()); // insert page number p.drawText(view.right() - p.fontMetrics().width(QString::number(page)), view.bottom() + p.fontMetrics().ascent() + 5, QString::number(page)); // exit loop on last page if (view.top () >= richText.height ()) break; printer->newPage(); page++; } while (TRUE); if (!p.end()) qDebug("Print painter yielded failure"); But when this routine runs the second time, it does not print the document. It will just print an empty page but still with the page number on it. This worked fine before with Qt3.

    Read the article

  • Always center UIView

    - by bresc
    Hi, I have a small UIView that should appear always in the center of the screen. This works great for portrait mode but does not in landscape. To draw the UIView I use: myView.frame = CGRectMake((visibleArea.size.width - MY_VIEW_WIDTH) / 2, (visibleArea.size.height - MY_VIEW_HEIGHT) / 2, MY_VIEW_WIDTH, MY_VIEW_HEIGHT); myView.autoresizingMask = ( UIViewAutoresizingFlexibleTopMargin | UIViewAutoresizingFlexibleBottomMargin | UIViewAutoresizingFlexibleLeftMargin | UIViewAutoresizingFlexibleRightMargin ); Any ideas what might be missing?

    Read the article

  • As3: Plotting text as in technical drawings

    - by Cambiata
    Hi! Flash/Actionscript 3 lack the possibility to "draw" text to a displayobject graphics - a textfield has to be created, added and set. This is rather clumsy and time consuming. In the wait for simple and stable alternatives (for example http://lab.polygonal.de/2009/12/15/font-rendering-with-the-fp10-drawing-api/), is there a class or library for simply plotting text strings using graphical primitives (lines), something like the text is "drawn" on plotted technical drawings?

    Read the article

  • Drawing in iPad

    - by Manjunath
    Hi all, I am trying to draw custom shapes in iPad application. I am using UIBezierPath for drawing which is available for 3.2 onwards. My question is whether it is good to use this class or should I go to the core graphics? Is there any difference between uibezierpath and core graphics drawing related to performance?

    Read the article

  • video processing with opencv

    - by mithila
    i'm trying to detect car in a video file.i can do background subtraction and the moving cars are visible as foreground object. but i can't draw rectangle around the car. how can i do it? or how can i say in a particular area of the frame there is a car/or there is no car now.please help.

    Read the article

  • ASP SQL Error Handling

    - by J Harley
    Hello, I am using Classic asp and SQL Server 2005. This is code that works (Provided by another member of Stack Overflow): sqlStr = "USE "&databaseNameRecordSet.Fields.Item("name")&";SELECT permission_name FROM fn_my_permissions(null, 'database')" This code checks what permissions I have on a given database - the problem being - if I dont have permission it throws an error and doesn't continue to draw the rest of my page. Anyone got any ideas on remedying this? Many Thanks, Joel

    Read the article

  • dropdownlist itemsource and selected value in wpf

    - by vahid
    hi all i have a dropdownlist that bind to a collection of all system colors(ObjectDataProvider).it shows colors name and background of each items is draw with colorName.it works fine . but know i have a listbox that bind to an collection(CollectionViewSource) that shows a list of element with a property name "backcolor" ,i want to selectedvalue of dropdown changed when selecteditem in listBox changed ???? my paltform is WPF and i know a few about masterDetails senario

    Read the article

  • Possible to do rounded corners in custom Progressbar progressDrawable?

    - by b-ryce
    I have a progress bar that is supposed to look like the attached image: And I've made it a long way. I'm very close the only part that isn't working is the rounded corners for the progressDrawable. Here is what mine looks like. (Notice, circled in red, that the fill inside the white outline does not have rounded corners): So, I've found a couple of ways to make this work when the progress bar is colored in with a shape, gradient, or color. BUT, I can't get it with an image as the progressDrawable. Here is my class that extends ProgressBar public class RoundedProgressBar extends ProgressBar{ private Paint paint; public RoundedProgressBar(Context context) { super(context); setup(); } public RoundedProgressBar(Context context, AttributeSet attrs) { super(context, attrs); setup(); } public RoundedProgressBar(Context context, AttributeSet attrs, int defStyle) { super(context, attrs, defStyle); setup(); ; } protected void setup() { paint = new Paint(); } @Override protected synchronized void onDraw(Canvas canvas) { // First draw the regular progress bar, then custom draw our text super.onDraw(canvas); paint.setColor(Color.WHITE); paint.setStyle(Paint.Style.STROKE); RectF r = new RectF(0,0,getWidth()-1,getHeight()-1); canvas.drawRoundRect(r,getHeight()/2,getHeight()/2, paint); } } Here is my selector: <layer-list xmlns:android="http://schemas.android.com/apk/res/android" > <item android:id="@android:id/background" android:drawable="@drawable/slider_track" /> <item android:id="@android:id/secondaryProgress" android:drawable="@drawable/slider_track" /> <item android:id="@android:id/progress" android:drawable="@drawable/slider_track_progress" /> </layer-list> Here are the images used in the selector: slider_track- slider_track_progress- Here is where I embed my progressbar in the layout for my activity <com.android.component.RoundedProgressBar android:id="@+id/player_hp_bar" android:layout_width="fill_parent" android:layout_height="36dip" android:layout_marginLeft="30dip" android:layout_marginRight="30dip" android:max="100" style="?android:attr/progressBarStyleHorizontal" android:progressDrawable="@drawable/slider_layer_list" android:progress="20" android:maxHeight="12dip" android:minHeight="12dip" /> Anyone know how to make this work?

    Read the article

  • How to clip a rectangle from a tiff?

    - by TooFat
    I have a Winforms Gui in C# that allows a user to draw a rectangle on a display of a tiff and save the position, height, width etc. Basically, what I want to do is take the saved position, height and width of the rectangle and clip that area into a sep. bitmap that can then be passed to sep. method that will just OCR the new clip of the bitmap only. What is the best way to do this?

    Read the article

  • Delete rectangle using .NET?

    - by C. Karunarathne
    Can I delete the old rectangle which I have drawn and draw a new rectangle? private void panel1_MouseClick(object sender, MouseEventArgs e) { Graphics g = this.panel1.CreateGraphics(); Pen pen = new Pen(Color.Black, 2); g.DrawRectangle(pen, 100,100, 100, 200); g.dispose(); }

    Read the article

< Previous Page | 86 87 88 89 90 91 92 93 94 95 96 97  | Next Page >