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  • Set UIImageView Size?

    - by Tronic
    hi, i have following problem: i generate subviews UIView in an UIScrollView including UIImageViews. NSArray *bilder = [[NSArray alloc] initWithObjects:@"lol.jpg", @"lol2.jpg", nil]; NSArray *added = [[NSMutableArray alloc] init]; UIImageView *tmpView; for (NSString *name in bilder) { UIImage *image = [UIImage imageNamed:name]; tmpView = [[UIImageView alloc] initWithImage:image]; tmpView.contentMode = UIViewContentModeScaleAspectFit; tmpView.frame = CGRectMake(0, 0, 300, 300); [added addObject:tmpView]; [tmpView release]; } CGSize framy = mainFrame.frame.size; NSUInteger x = 0; for (UIView *view in added) { [mainFrame addSubview:view]; view.frame = CGRectMake(framy.height * x++, 0, framy.height, framy.width); } mainFrame.scrollEnabled = YES; mainFrame.pagingEnabled = YES; mainFrame.contentSize = CGSizeMake(framy.height * [added count], framy.width); mainFrame.backgroundColor = [UIColor blackColor]; i get image file names out of an array. now i want to resize the imageview to a specific size, but it won't work. any advice? thanks + regards

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  • EXT-js PropertyGrid best practices to achieve an update ?

    - by Tom
    Hello, I am using EXT-js for a project, usually everything is pretty straight forward with EXT-js, but with the propertyGrid, I am not sure. I'd like some advice about this piece of code. First the store to populate the property grid, on the load event: var configStore = new Ext.data.JsonStore({ // store config autoLoad:true, url: url.remote, baseParams : {xaction : 'read'}, storeId: 'configStore', // reader config idProperty: 'id_config', root: 'config', totalProperty: 'totalcount', fields: [{ name: 'id_config' }, { name: 'email_admin' } , { name: 'default_from_addr' } , { name: 'default_from_name' } , { name: 'default_smtp' } ],listeners: { load: { fn: function(store, records, options){ // get the property grid component var propGrid = Ext.getCmp('propGrid'); // make sure the property grid exists if (propGrid) { // populate the property grid with store data propGrid.setSource(store.getAt(0).data); } } } } }); here is the propertyGrid: var propsGrid = new Ext.grid.PropertyGrid({ renderTo: 'prop-grid', id: 'propGrid', width: 462, autoHeight: true, propertyNames: { tested: 'QA', borderWidth: 'Border Width' }, viewConfig : { forceFit: true, scrollOffset: 2 // the grid will never have scrollbars } }); So far so good, but with the next button, I'll trigger an old school update, and my question : Is that the proper way to update this component ? Or is it better to user an editor ? or something else... for regular grid I use the store methods to do the update, delete,etc... The examples are really scarce on this one! Even in books about ext-js! new Ext.Button({ renderTo: 'button-container', text: 'Update', handler: function(){ var grid = Ext.getCmp("propGrid"); var source = grid.getSource(); var jsonDataStr = null; jsonDataStr = Ext.encode(source); var requestCg = { url : url.update, method : 'post', params : { config : jsonDataStr , xaction : 'update' }, timeout : 120000, callback : function(options, success, response) { alert(success + "\t" + response); } }; Ext.Ajax.request(requestCg); } }); and thanks for reading.

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  • WPF draw Border on MouseOver

    - by tcables
    Hello, I have a WPF Application where I am trying to make a close button like image. I am trying to draw a border or have a border show up on mouse over... But I cannot seem to make it work. I have tried like 6 different methods of doing so...Images, borders with images, brushes, ect. I am using the following code at the moment: <Canvas Name="cMin" Height="16" Width="16" Grid.Column="1" Grid.Row="1"> <Canvas.Background> <ImageBrush ImageSource="_.png" Stretch="None" /> </Canvas.Background> <Border BorderBrush="Transparent" BorderThickness="1" Background="Transparent" CornerRadius="0" Height="18" Width="18"> <Border.Style> <Style TargetType="Border"> <Style.Triggers> <Trigger Property="IsMouseOver" Value="True"> <Setter Property="BorderBrush" Value="LightBlue" /> </Trigger> <Trigger Property="IsMouseOver" Value="False"> <Setter Property="BorderBrush" Value="Transparent" /> </Trigger> </Style.Triggers> </Style> </Border.Style> </Border> </Canvas> Any help would be appreciated, Thanks!

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  • jquery Ui Dialog box opacity / alpha filter broken in IE7/8 when using jquery.effects.fade.js

    - by Ideasman101
    Greetings! Goal: transparant ui dialog box in IE7/8 with fade in/out effect upon open/close. Opacity was set in css and works just fine (safari, chrome, ff ie7/8) using native effects blind / explode etc. But when using efects.fade.js on the dialog box the opacity does not work on ie7/8 We want fade in/out because that looks awesome. Anyway here is my code. Any help much appreciated. Maybe something to do with filter or cleartype. My css .ui-dialog { position: absolute; padding: .2em; width: 300px; overflow: hidden; opacity:0.85;filter:alpha(opacity=85);} My jQuery // Dialog1 $('#dialog1').dialog({ position: [250,120], autoOpen: false, closeOnEscape: true, modal: false, show: { effect: "fade", options: {}, speed: 1500 }, hide: { effect: "fade", options: {}, speed: 1500 }, resizable: false, width: 350, height: 200 }); // Dialog Link 1 $('#dialog_link1').click(function(){ $([1,2,3]).each(function(){ var num = this; $('#dialog'+num).dialog('close'); }); $('#dialog1').dialog('open'); $('body').css("background-image", "url(images/image1.jpg)"); $('body').css("background-repeat", "no-repeat"); $('body').css("background-position", "bottom center"); $('body').css("background-attachment", "fixed"); $('body').css("bottom", "0px"); return false; });

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  • Jqgrid: navigation based on the selected row

    - by bsreekanth
    Hello, I was trying to enable navigation based on a selected row. So, the user select a row from jQgrid, and when press the show (is there a show button for the grid, I saw edit, add etc), it needs to go to a new page based on the url (part of the row). $(document).ready(function () { function getLink() { // var rowid = $("#customer_list").jqGrid('getGridParam', 'selrow'); var rowid = $("#customer_list").getGridParam('selrow'); var MyCellData = $("#customer_list").jqGrid('getCell', rowid, 'dataUrl'); return MyCellData; } $("#customer_list").jqGrid({ url:'mytestList', editurl:'jq_edit_test', datatype: "json", colNames:['Call Id','Title','dataUrl'], colModel:[ {name:'callId', width:80, search:false }, {name:'title', width:200, sortable:false }, {name:'dataUrl',hidden:true} ], rowNum:10, sortname:'lastUpdated', sortorder: 'desc', pager:'#customer_list_pager', viewrecords: true, gridview: true }).navGrid('#customer_list_pager', {add:true,edit:true,del:false,search:true,refresh:true}, {closeAfterEdit:true, afterSubmit:afterSubmitEvent }, // edit options {addCaption:'Create New something', afterSubmit:afterSubmitEvent, savekey:[true,13]}, // add options {afterSubmit:afterSubmitEvent} // delete options ); $("#customer_list").jqGrid('filterToolbar'); }); so, the url is passed for each row as dataUrl. I'm trying to read it and set to the button. Whn debug through firebug, the rowid was 223 (there were only 12 rows in the grid), and the cell value is empty. Currently the button is kept outside the grid, but it may better to be it part of the vavGrid thanks.

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  • QGraphicsView scrolling and image scaling/cropping

    - by boohoo
    I would like to have a background image in my QGraphicsView that is always scaled (and cropped if necessary) to the size of the viewport, without scrollbars and without scrolling with the keyboard and mouse. The example below is what I am doing to scale and crop an image in the viewport, but I am using random values for the cropping that are pulled out of the aether. I would like a logical solution? MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent), ui(new Ui::MainWindow) { ui->setupUi(this); scene = new QGraphicsScene(this); ui->graphicsView->resize(800, 427); // MainWindow is 800x480, GraphicsView is 800x427. I want an image that // is the size of the graphicsView. ui->graphicsView->setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff); ui->graphicsView->setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff); // the graphicsView still scrolls if the image is too large, but // displays no scrollbars. I would like it not to scroll (I want to // add a scrolling widget into the QGraphicsScene later, on top of // the background image.) QPixmap *backgroundPixmap = new QPixmap(":/Valentino_Bar_Prague.jpg"); QPixmap sized = backgroundPixmap->scaled( QSize(ui->graphicsView->width(), ui->graphicsView->height()), Qt::KeepAspectRatioByExpanding); // This scales the image too tall QImage sizedImage = QImage(sized.toImage()); QImage sizedCroppedImage = QImage(sizedImage.copy(0,0, (ui->graphicsView->width() - 1.5), (ui->graphicsView->height() + 19))); // so I try to crop using copy(), and I have to use these values // and I am unsure why. QGraphicsPixmapItem *sizedBackground = scene->addPixmap( QPixmap::fromImage(sizedCroppedImage)); sizedBackground->setZValue(1); ui->graphicsView->setScene(this->scene); } I would like to know a way to scale and crop an image to the size of the QGraphicsView that will work even when I resize the QGraphicsView. Where are the 1.5 and 19 coming from?

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  • resizing row's height in QTreeWidget/QTreeView

    - by serge
    Hi everyone, I have some problems with sizing row's height in QTreeWidget. I use QStyledItemDelegate with QPlainTextEdit. During editing text in QPlainTextEdit i check for changes with a help of: rect = self.blockBoundingRect(self.firstVisibleBlock()) and if text's height changes i resize editor size and need row in QTreeWidget also resizing. But i don't know how to inform TreeWidget or a Delegate about changes. I tried to initialize editor with index, that i could use in a future, but Delegate creates new editor every time and i failed to use signals. Also I used following function to catch resize event, but it' doesn't: bool QAbstractItemDelegate::editorEvent ( QEvent * event, QAbstractItemModel * model, const QStyleOptionViewItem & option, const QModelIndex & index ) How can i bound editor's size changes with TreeWidget? And one more thing, by default all items (cells) in TreeWidget have -1 or some big value as default width. I need whole text in cell to be visible, so how can i limit cells width only by visible range and make it expand in height? I want for it the same behavior as in instance a table in MSWord. Thank you in advance, Serge

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  • Flash: How to make an embedded video not autoplay

    - by jb
    I'm embedding a Flash video into an HTML and would like the user to have to click it to begin playing. According to the Adobe <object> / <embed> element documentation, there are variety of methods to do this: 1) Add a Flash parameter inside the <object> tag: <param name="play" value="false"> 2) Add the attribute play inside the <embed> tag: <embed ... play="false"> 3) Add the attribute flashvars inside the <embed> tag: <embed ... flashvars="play=false"> Which is awesome. Only ... none of them work for me: http://johnboxall.github.com/test/flash/flash.htm My code looks like this now: <object width="590" height="475"> <param name="movie" value="untitled_skin.swf"> <param name="play" value="false"> <embed src="untitled_skin.swf" width="590" height="475" type="application/x-shockwave-flash" play="false" flashvars="autoplay=false&play=false" menu="false"></embed> </object> Anyone have any ideas? What am I doing wrong?

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  • How can I sort a DataGridTemplateColumn on a WPF Toolkit DataGrid?

    - by Kilhoffer
    I have a WPF Toolkit DataGrid with one DataGridTemplateColumn. I've specified in a grid attribute that I wish all columns to be sortable, but the DataGridTemplateColumn won't allow it. All other columns do allow sorting. I've even tried explicitly setting CanUserSort to true for that column, but no luck. Is it even possible to sort a template column? I've provided a custom sorter that works for all columns, but the header won't allow a sort click. <Controls:DataGrid ItemsSource="{Binding Events}" AutoGenerateColumns="False" CanUserSortColumns="True" CanUserReorderColumns="False" Sorting="DataGrid_Sorting" x:Name="EventsGrid"> <Controls:DataGrid.Columns> <Controls:DataGridTemplateColumn Header="Type" Width="42" CanUserResize="False"> <Controls:DataGridTemplateColumn.CellTemplate> <DataTemplate> <Image Source="{Binding EventTypeImage, Mode=OneWay}" HorizontalAlignment="Center" Width="16"/> </DataTemplate> </Controls:DataGridTemplateColumn.CellTemplate> </Controls:DataGridTemplateColumn> <Controls:DataGridTextColumn Header="Source" Binding="{Binding Source, Mode=OneWay}" /> <Controls:DataGridTextColumn Header="Details" MinWidth="175" Binding="{Binding Details, Mode=OneWay}" /> <Controls:DataGridTextColumn Header="Timestamp" MinWidth="175" Binding="{Binding Timestamp, Mode=OneWay}" IsReadOnly="True"/> </Controls:DataGrid.Columns> </Controls:DataGrid>

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  • ExtJS: remove a grid from a tabpanel when its underlying store is empty

    - by Antonio
    Hi, I have TabPanel which contains, among other things, a Grid connected to a Store. Several events may remove elements from the store. I would like the Grid to be removed from the TabPanel when the store is empty and, possibly, to have a single place in my code to check for this event. I thought about using store listeners, but unfortunately this causes exceptions in Ext code. My assumption is that this happens because rendering is performed on the grid after this is removed from the tabpanel. Any idea on how to accomplish such a task without messing up Ext is much appreciated. Thanks :) By the way, this is a code excerpt: var myStore = new Ext.data.Store({ reader: new Ext.data.JsonReader({fields: MyRecord}), listeners:{ 'clear': function(store, recs) { myTabPanel.remove(myGrid); }, 'remove': function(store, rec, idx) { if (store.getCount() == 0) { myTabPanel.remove(myGrid); } } } }); var myGrid = new Ext.grid.GridPanel({ id: "myGrid", title: "A Grid", store: myStore, frame:false, border:false, columns: [ { header: 'Remove', align:'center', width: 45, sortable: false, renderer: function(value, metaData, record, rowIndex, colIndex, store) { return '<img src="images/remove.png" width="34" height="18"/>'; } },{ header: 'Some Data', dataIndex: 'data', sortable: true } ], listeners:{ 'cellclick':function(grid, rowIndex, colIndex, e){ var rec = myStore.getAt(rowIndex); if(colIndex == 0){ myStore.remove(rec); } } } }); var myTabPanel= new Ext.TabPanel({ activeTab: 0, items: [ fooPanel, barPanel, myGrid] });

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  • WPF Databinding CheckBox.IsChecked

    - by Adam Tegen
    How would I bind the IsChecked member of a CheckBox to a member variable in my form? (I realize I can access it directly, but I am trying to learn about databinding and WPF) Below is my failed attempt to get this working. XAML: <Window x:Class="MyProject.Form1" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Title="Title" Height="386" Width="563" WindowStyle="SingleBorderWindow"> <Grid> <CheckBox Name="checkBoxShowPending" TabIndex="2" Margin="0,12,30,0" Checked="checkBoxShowPending_CheckedChanged" Height="17" VerticalAlignment="Top" HorizontalAlignment="Right" Width="92" Content="Show Pending" IsChecked="{Binding ShowPending}"> </CheckBox> </Grid> </Window> Code: namespace MyProject { public partial class Form1 : Window { private ListViewColumnSorter lvwColumnSorter; public bool? ShowPending { get { return this.showPending; } set { this.showPending = value; } } private bool showPending = false; private void checkBoxShowPending_CheckedChanged(object sender, EventArgs e) { //checking showPending.Value here. It's always false } } }

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  • UIScrollView with pages enabled and device rotation/orientation changes (MADNESS)

    - by jbrennan
    I'm having a hard time getting this right. I've got a UIScrollView, with paging enabled. It is managed by a view controller (MainViewController) and each page is managed by a PageViewController, its view added as a subview of the scrollView at the proper offset. Scrolling is left-right, for standard orientation iPhone app. Works well. Basically exactly like the sample provided by Apple and also like the Weather app provided with the iPhone. However, when I try to support other orientations, things don't work very well. I've supported every orientation in both MainViewController and PageViewController with this method: - (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation { return YES; } However, when I rotate the device, my pages become quite skewed, and there are lots of drawing glitches, especially if only some of the pages have been loaded, then I rotate, then scroll more, etc... Very messy. I've told my views to support auto-resizing with theView.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight; But to no avail. It seems to just stretch and distort my views. In my MainViewController, I added this line in an attempt to resize all my pages' views: - (void)didRotateFromInterfaceOrientation:(UIInterfaceOrientation)fromInterfaceOrientation { self.scrollView.contentSize = CGSizeMake(self.scrollView.frame.size.width * ([self.viewControllers count]), self.scrollView.frame.size.height); for (int i = 0; i < [self.viewControllers count]; i++) { PageViewController *controller = [self.viewControllers objectAtIndex:i]; if ((NSNull *)controller == [NSNull null]) continue; NSLog(@"Changing frame: %d", i); CGRect frame = self.scrollView.frame; frame.origin.x = frame.size.width * i; frame.origin.y = 0; controller.view.frame = frame; } } But it didn't help too much (because I lazily load the views, so not all of them are necessarily loaded when this executes). Is there any way to solve this problem?

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  • WPF ListView SelectedItem is null

    - by ozczecho
    Hi All I have a Listview that has a checkbox as one of the columns. If I click anywhere but the actual checkbox the SelectedItem of the ListView is set to the current selected row, as expected. If, on the other hand I click onto the checkbox (without clicking on the row first) then the SelectedItem is null or the previously clicked row. Can anyone help me out.... Cheers <ListView Width="auto" SelectionMode="Single" x:Name="listBox" ItemsSource="{Binding MyData}" SelectedItem="{Binding Path=SelectedMyData}"> <ListView.View> <GridView> <GridViewColumn Header="Date" Width="120"> <GridViewColumn.CellTemplate> <DataTemplate> <ContentPresenter Style="{StaticResource DateTimeContent}" Content="{Binding MyDate}"/> </DataTemplate> </GridViewColumn.CellTemplate> </GridViewColumn> <GridViewColumn.CellTemplate> <DataTemplate> <CheckBox IsThreeState="False" Checked="OnChkChecked" Unchecked="OnChkChecked" IsChecked="{Binding IsCorrect}"></CheckBox> </DataTemplate> </GridViewColumn.CellTemplate> </GridViewColumn> </GridView> </ListView.View> </ListView>

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  • How do I make an ellipse blink?

    - by MedicineMan
    I am trying to make a custom control in WPF. I want it to simulate the behavior of a LED that can blink. There are three states to the control: On, Off, and Blinking. I know how to set On and Off through the code behind, but this WPF animation stuff is just driving me nuts!!!! I cannot get anything to animate whatsoever. The plan is to have a property called state. When the user sets the value to blinking, I want the control to alternate between green and grey. I'm assuming I need a dependency property here, but have no idea. I had more xaml before but just erased it all. it doesn't seem to do anything. I'd love to do this in the most best practice way possible, but at this point, I'll take anything. I'm half way to writing a thread that changes the color manually at this point. <UserControl x:Class="WpfAnimation.LED" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Height="300" Width="300"> <Grid> <Ellipse x:Name="MyLight" Height="Auto" Width="Auto"/> </Grid> </UserControl>

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  • CKEditor inside jQuery Dialog, how do I build it?

    - by Ben Dauphinee
    So, I'm working with CKEditor and jQuery, trying to build a pop-out editor. Below is what I have coded so far, and I can't seem to get it working the way I want it to. Basically, click the 'Edit' link, dialog box pops up, with the content to edit loaded into the CKEditor. Also, not required, but helpful if you can suggest how to do it. I can't seem to find out how to make the save button work in CKEditor (though I think the form will do it). Thanks in advance for any help. $(document).ready(function(){ var config = new Array(); config.height = "350px"; config.resize_enabled = false; config.tabSpaces = 4; config.toolbarCanCollapse = false; config.width = "700px"; config.toolbar_Full = [["Save","-","Cut","Copy","Paste","-","Undo","Redo","-","Bold","Italic", "-", "NumberedList","BulletedList","-","Link","Unlink","-","Image","Table"]]; $("a.opener").click(function(){ var editid = $(this).attr("href"); var editwin = \'<form><div id="header"><input type="text"></div><div id="content"><textarea id="content"></textarea></div></form>\'; var $dialog = $("<div>"+editwin+"</div>").dialog({ autoOpen: false, title: "Editor", height: 360, width: 710, buttons: { "Ok": function(){ var data = $(this).val(); } } }); //$(this).dialog("close"); $.getJSON("ajax/" + editid, function(data){ alert("datagrab"); $dialog.("textarea#content").html(data.content).ckeditor(config); alert("winset"); $dialog.dialog("open"); }); return false; }); });

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  • WPF combobox loses Aero theme when using a style trigger

    - by Greg R
    I am using style triggers to change combo box to texbox if it's readonly, but for some reason when I apply the style, it cause the combobox theme to change from Aero to Windows Classic (the theme I currently have in use on my PC). Can I avoid this somehow? Here is my code: <ComboBox ItemsSource="{Binding Source={StaticResource AllCountries}}" SelectedValue="{Binding OrderInfoVm.BillingCountry}" DisplayMemberPath="Value" SelectedValuePath="Key" IsReadOnly="{Binding ReadOnlyMode}" Style="{StaticResource EditableDropDown}" /> <Style x:Key="EditableDropDown" TargetType="ComboBox"> <Style.Triggers> <Trigger Property="IsReadOnly" Value="True"> <Setter Property="SelectedValuePath" Value="Content" /> <Setter Property="Template"> <Setter.Value> <ControlTemplate TargetType="ComboBox"> <TextBox Text="{TemplateBinding SelectedValue, Converter={StaticResource StringCaseConverter}}" BorderThickness="0" Background="Transparent" FontSize="{TemplateBinding FontSize}" HorizontalAlignment="{TemplateBinding HorizontalAlignment}" FontFamily="{TemplateBinding FontFamily}" Width="{TemplateBinding Width}" TextWrapping="Wrap"/> </ControlTemplate> </Setter.Value> </Setter> </Trigger> </Style.Triggers> </Style>

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  • Using initParams in Silverlight 4 project

    - by Silverlight Beginner
    I'm trying to upgrade a project that uses Silverlight 2 to use Silverlight 4 but I have problem with initparam to set domain. The old Silverlight 2 project: <form id="form1" runat="server" style="height:100%;"> <asp:ScriptManager ID="ScriptManager1" runat="server"></asp:ScriptManager> <div style="height:100%;"> <asp:Silverlight ID="Xaml1" runat="server" Source="~/ClientBin/EKAKC.xap" MinimumVersion="2.0.31005.0" Width="100%" Height="100%" /> </div> </form> And from Default.aspx.cs: Xaml1.InitParameters += "Domain=" + domain; The new Silverlight 4 project: <body style="height: 100%; margin: 0;"> <form id="form1" runat="server" style="height: 100%;"> <asp:ScriptManager ID="ScriptManager1" runat="server"> </asp:ScriptManager> <div id="silverlightControlHost"> <object type="application/x-silverlight-2" data="data:application/x-silverlight," width="300" height="300"> <param name="source" value="EKAKC.xap"/> <param name="initParams" value="<%= string.Format("WCFReferenceURL={0}", ConfigurationManager.AppSettings["WCFReferenceURL"])%>" /> </object> </div> The Domain will not be set in my new Silverlight 4 project

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  • RubyQT QGraphicsview scale images to fit window

    - by shadowskill
    I'm trying to make an image scale inside of a QGraphicsView and having zero success. I did find this C++ question with what seemed to be the same problem:http://stackoverflow.com/questions/2489754/qgraphicsview-scrolling-and-image-scaling-cropping I borrowed the approach of overriding the drawback/foreground. However when I run the script I'm greeted with a method_missing error: method_missing: undefined method drawPixmap for #<Qt::Painter:0x7ff11eb9b088> QPaintDevice: Cannot destroy paint device that is being painted What should I be doing to get the QGraphicsView to behave the way I want? class Imageview < Qt::GraphicsView attr_reader :pixmap def initialize(parent=nil) # @parent=parent super() @pixmap=pixmap Qt::MetaObject.connectSlotsByName(self) end def loadimage(pixmap) @pixmap=pixmap end def drawForeground(painter, rect) #size=event.size() #item= self.items()[0] #Qt::GraphicsPixmapItem.new #pixmap=@pixmap #painter=Qt::Painter.new [email protected](Qt::Size.new(rect.width,rect.height),Qt::KeepAspectRatio, Qt::SmoothTransformation) # painter.begin(self) painter.drawPixmap(rect,sized,Qt::Rect.new(0.0, 0.0, sized.width,sized.height)) #painter.end() # item.setPixmap(sized) #painter.end self.centerOn(1.0,1.0) #item.scale() # item.setTransformationMode(Qt::FastTransformation) # self.fitInView(item) end def updateSceneRect painter=Qt::Painter.new() drawForeground(painter,self.sceneRect) end end app=Qt::Application.new(ARGV) #grview=Imageview.new pic=Qt::Pixmap.new('pic') grview=Imageview.new() grview.loadimage(pic) scene=Qt::GraphicsScene.new #scene.addPixmap(pic) grview.setScene(scene) #grview.fitInView(scene) grview.renderHint=Qt::Painter::Antialiasing | Qt::Painter::SmoothPixmapTransform grview.backgroundBrush = Qt::Brush.new(Qt::Color.new(230, 200, 167)) grview.show app.exec

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  • Rails3 and Paperclip

    - by arkannia
    Hi, I have migrated my application from rails 2.3 to rails3 and i have a problem with paperclip. I saw there was a branch for rails3 on paperclip git. So I added "gem 'paperclip', :git = 'git://github.com/thoughtbot/paperclip.git', :branch = 'rails3'" into the Gemfile and launch the command bundle install. Once paperclip installed, the upload worked fine but not the styles. I saw a hack to fix it. # in lib/paperclip/attachment.rb at line 293 def callback which #:nodoc: # replace this line... # instance.run_callbacks(which, @queued_for_write){|result,obj| result == false } # with this: instance.run_callbacks(which, @queued_for_write) end The styles are ok after that, but i'm not able to active the processor. My code is : has_attached_file :image, :default_url => "/images/nopicture.jpg", :styles => { :large => "800x600>", :cropped => Proc.new { |instance| "#{instance.width}x#{instance.height}>" }, :crop => "300x300>" }, :processors => [:cropper] My processor is located in RAILS_APP/lib/paperclip_processors/cropper.rb and contains : module Paperclip class Cropper < Thumbnail def transformation_command if crop_command and !skip_crop? crop_command + super.sub(/ -crop \S+/, '') else super end end def crop_command target = @attachment.instance trans = ""; trans << " -crop #{target.crop_w}x#{target.crop_h}+#{target.crop_x}+#{target.crop_y}" if target.cropping? trans << " -resize \"#{target.width}x#{target.height}\"" trans end def skip_crop? ["800x600>", "300x300>"].include?(@target_geometry.to_s) end end end My problem is that i got this error message : uninitialized constant Paperclip::Cropper The cropped processor is not loaded. Is anybody has an idea to fix that ? For information my application works fine on rails 2.3.4.

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  • Compressing IplImage to JPEG using libjpeg in OpenCV

    - by Petar
    Hi everybody. So I have this problem. I have an IplImage that i want to compress to JPEG and do something with it. I use libjpeg. I found a lot of answers "read through examples and docs" and such and did that. And successfully written a function for that. FILE* convert2jpeg(IplImage* frame) { FILE* outstream = NULL; outstream=malloc(frame-imageSize*frame-nChannels*sizeof(char)) unsigned char *outdata = (uchar *) frame->imageData; struct jpeg_error_mgr jerr; struct jpeg_compress_struct cinfo; int row_stride; JSAMPROW row_ptr[1]; jpeg_create_compress(&cinfo); jpeg_stdio_dest(&cinfo, outstream); cinfo.image_width = frame->width; cinfo.image_height = frame->height; cinfo.input_components = frame->nChannels; cinfo.in_color_space = JCS_RGB; jpeg_set_defaults(&cinfo); jpeg_start_compress(&cinfo, TRUE); row_stride = frame->width * frame->nChannels; while (cinfo.next_scanline < cinfo.image_height) { row_ptr[0] = &outdata[cinfo.next_scanline * row_stride]; jpeg_write_scanlines(&cinfo, row_ptr, 1); } jpeg_finish_compress(&cinfo); jpeg_destroy_compress(&cinfo); return outstream; } Now this function is straight from the examples (except the part of allocating memory, but i need that since i'm not writnig to a file), but it still doesn't work. It dies on jpeg_start_compress(&cinfo, TRUE); part? Can anybody help?

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  • WPF zoom canvas and maintain scroll position

    - by Alex McBride
    I have a Canvas element, contained within a ScrollViewer, which I'm zooming using ScaleTransform. However, I want to be able to keep the scroll position of the viewer focused on the same part of the canvas after the zoom operation has finished. Currently when I zoom the canvas the scroll position of the viewer stays where it was and the place the user was viewing is lost. I'm still learning WPF, and I've been going backwards and forwards a bit on this, but I can't figure out a nice XAML based way to accomplish what I want. Any help in this matter would be greatly appreciated and would aid me in my learning process. Here is the kind of code I'm using... <Grid> <ScrollViewer Name="TrackScrollViewer" HorizontalScrollBarVisibility="Auto" VerticalScrollBarVisibility="Auto"> <Canvas Width="2560" Height="2560" Name="TrackCanvas"> <Canvas.LayoutTransform> <ScaleTransform ScaleX="{Binding ElementName=ZoomSlider, Path=Value}" ScaleY="{Binding ElementName=ZoomSlider, Path=Value}"/> </Canvas.LayoutTransform> <!-- Some complex geometry describing a motor racing circuit --> </Canvas> </ScrollViewer> <StackPanel Orientation="Horizontal" Margin="8" VerticalAlignment="Top" HorizontalAlignment="Left"> <Slider Name="ZoomSlider" Width="80" Minimum="0.1" Maximum="10" Value="1"/> <TextBlock Margin="4,0,0,0" VerticalAlignment="Center" Text="{Binding ElementName=ZoomSlider, Path=Value, StringFormat=F1}"/> </StackPanel> </Grid>

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  • Jqgrid + CodeIgniter

    - by Ivan
    I tried to make jqgrid work with codeigniter, but I could not do it, I only want to show the data from the table in json format... but nothing happens.. but i dont know what i am doing wrong, i cant see the table with the content i am calling. my controller class Grid extends Controller { public function f() { $this->load->model('dbgrid'); $var['grid'] = $this->dbgrid->getcontentfromtable(); foreach($var['grid'] as $row) { $responce->rows[$i]['id']=$row->id; $responce->rows[$i]['cell']=array($row->id,$row->id_catalogo); } $json = json_encode($responce); $this->load->view('vgrid',$json); } function load_view_grid() { $this->load->view('vgrid'); } } my model class Dbgrid extends Model{ function getcontentfromtable() { $sql = 'SELECT * FROM anuncios'; $query = $this->db->query($sql); $result = $query->result(); return $result; } } my view(script) $(document).ready(function() { jQuery("#list27").jqGrid({ url:'http://localhost/sitio/index.php/grid/f', datatype: "json", mtype: "post", height: 255, width: 600, colNames:['ID','ID_CATALOGO'], colModel:[ {name:'id',index:'id', width:65, sorttype:'int'}, {name:'id_catalogo',index:'id_catalogo', sorttype:'int'} ], rowNum:50, rowTotal: 2000, rowList : [20,30,50], loadonce:true, rownumbers: true, rownumWidth: 40, gridview: true, pager: '#pager27', sortname: 'item_id', viewrecords: true, sortorder: "asc", caption: "Loading data from server at once" }); }); hope someone help me

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  • Opening html modal dialog

    - by Hulk
    All, I need to get the contents below on a modal window.I had been trying this for a while today. On modal window opened the background body contents are not accessible.and on reload page the modal popup should close down leavinfg the contents of the text area as it is. <a href="" id="link">Open Popup</a> <table><tr width="10%"><td> <TEXTAREA name="text1" id="text1" rows="15" cols="65" onscroll="sync();" spellcheck="false"></TEXTAREA> </td> <td> <TEXTAREA Name="text2" id="text2" rows="15" cols="65" spellcheck="false"> </TEXTAREA> </td></tr> <tr> <tr width="90%"><td> </td> </tr> </table> <input type="button" value="Compile" onclick="stat('')"/> <input type="button" value="Reload Page" onClick="window.location.href=window.location.href"> Thanks..

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  • UIBarButtonItem with custom image and no border

    - by mongeta
    Hello, I want to create a UIBarButtonItem with a custom image, but I don't want the border that iPhone adds, as my Image has a special border. It's the same as the back button but a forward button. This App is for an inHouse project, so I don't care if Apple reject or approves it or likes it :-) If I use the initWithCustomView:v property of the UIBarButtonItem, I can do it: UIImage *image = [UIImage imageNamed:@"right.png"]; UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom]; [button setBackgroundImage: [image stretchableImageWithLeftCapWidth:7.0 topCapHeight:0.0] forState:UIControlStateNormal]; [button setBackgroundImage: [[UIImage imageNamed: @"right_clicked.png"] stretchableImageWithLeftCapWidth:7.0 topCapHeight:0.0] forState:UIControlStateHighlighted]; button.frame= CGRectMake(0.0, 0.0, image.size.width, image.size.height); [button addTarget:self action:@selector(AcceptData) forControlEvents:UIControlEventTouchUpInside]; UIView *v=[[UIView alloc] initWithFrame:CGRectMake(0.0, 0.0, image.size.width, image.size.height) ]; [v addSubview:button]; UIBarButtonItem *forward = [[UIBarButtonItem alloc] initWithCustomView:v]; self.navigationItem.rightBarButtonItem= forward; [v release]; [image release]; This works, but if I have to repeat this process in 10 views, this is not DRY. I suppose I have to subclass, but what ? NSView ? UIBarButtonItem ? thanks, regards,

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  • Extended SurfaceView's onDraw() method never called

    - by Gab Royer
    Hi, I'm trying to modify the SurfaceView I use for doing a camera preview in order to display an overlaying square. However, the onDraw method of the extended SurfaceView is never called. Here is the source : public class CameraPreviewView extends SurfaceView { protected final Paint rectanglePaint = new Paint(); public CameraPreviewView(Context context, AttributeSet attrs) { super(context, attrs); rectanglePaint.setARGB(255, 200, 0, 0); rectanglePaint.setStyle(Paint.Style.FILL); rectanglePaint.setStrokeWidth(2); } @Override protected void onDraw(Canvas canvas){ canvas.drawRect(new Rect(10,10,200,200), rectanglePaint); Log.w(this.getClass().getName(), "On Draw Called"); } } public class CameraPreview extends Activity implements SurfaceHolder.Callback{ private SurfaceHolder holder; private Camera camera; @Override protected void onCreate(Bundle savedInstanceState){ super.onCreate(savedInstanceState); // We remove the status bar, title bar and make the application fullscreen requestWindowFeature(Window.FEATURE_NO_TITLE); getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN); // We set the content view to be the layout we made setContentView(R.layout.camera_preview); // We register the activity to handle the callbacks of the SurfaceView CameraPreviewView surfaceView = (CameraPreviewView) findViewById(R.id.camera_surface); holder = surfaceView.getHolder(); holder.addCallback(this); holder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS); } public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) { Camera.Parameters params = camera.getParameters(); params.setPreviewSize(width, height); camera.setParameters(params); try { camera.setPreviewDisplay(holder); } catch (IOException e) { e.printStackTrace(); } camera.startPreview(); } public void surfaceCreated(SurfaceHolder holder) { camera = Camera.open(); } public void surfaceDestroyed(SurfaceHolder holder) { camera.stopPreview(); camera.release(); } }

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