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Update Snippet382 to demonstrate PlainImageDataProvider disablement #2910

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Update Snippet382 to demonstrate PlainImageDataProvider disablement #2910

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40 changes: 39 additions & 1 deletion examples/org.eclipse.swt.snippets/src/org/eclipse/swt/snippets/Snippet382.java
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Original file line number Diff line number Diff line change
Expand Up @@ -108,6 +108,34 @@ public int getGcStyle() {
final Image disabledImageWithTransparentGcDrawer = new Image (display, imageWithTransparentGcDrawer, SWT.IMAGE_DISABLE);
final Image greyImageWithTransparentGcDrawer = new Image (display, imageWithTransparentGcDrawer, SWT.IMAGE_GRAY);

Image imageWithPlainImageData = new Image(display, 16, 16);

GC plainImageGCDrawer = new GC(imageWithPlainImageData);
plainImageGCDrawer.setBackground(display.getSystemColor(SWT.COLOR_RED));
plainImageGCDrawer.fillRectangle(0, 0, 16, 16);
plainImageGCDrawer.setForeground(display.getSystemColor(SWT.COLOR_YELLOW));
plainImageGCDrawer.drawRectangle(4, 4, 8, 8);
plainImageGCDrawer.dispose();

Image disabledImageWithPlainImageData = new Image(display, imageWithPlainImageData, SWT.IMAGE_DISABLE);
Image greyImageWithPlainImageData = new Image(display, imageWithPlainImageData, SWT.IMAGE_GRAY);


Image imageWithPlainImageDataWithHandleAlreadyCreated = new Image (display, 16, 16);

GC plainImageWithHandleCreated = new GC (imageWithPlainImageDataWithHandleAlreadyCreated);
plainImageWithHandleCreated.setBackground(display.getSystemColor(SWT.COLOR_RED));
plainImageWithHandleCreated.fillRectangle(0, 0, 16, 16);
plainImageWithHandleCreated.setForeground(display.getSystemColor(SWT.COLOR_YELLOW));
plainImageWithHandleCreated.drawRectangle(4, 4, 8, 8);
plainImageWithHandleCreated.dispose();
// Force creation of the handle at 150% zoom
imageWithPlainImageDataWithHandleAlreadyCreated.getImageData(150);

Image disabledImageWithHandleCreated = new Image (display, imageWithPlainImageDataWithHandleAlreadyCreated, SWT.IMAGE_DISABLE);
Image greyImageWithHandleCreated = new Image (display, imageWithPlainImageDataWithHandleAlreadyCreated, SWT.IMAGE_GRAY);


final Shell shell = new Shell (display);
shell.setText("Snippet382");
shell.setLayout (new GridLayout (3, false));
Expand Down Expand Up @@ -149,6 +177,16 @@ public void handleEvent(Event e) {
drawImages(mainGC, gcData, "Normal", 740, imageWithTransparentGcDrawer);
drawImages(mainGC, gcData, "Disabled", 780, disabledImageWithTransparentGcDrawer);
drawImages(mainGC, gcData, "Greyed", 820, greyImageWithTransparentGcDrawer);

mainGC.drawText("--Image with PlainImageData--", 20, 850);
drawImages(mainGC, gcData, "Normal", 880, imageWithPlainImageData);
drawImages(mainGC, gcData, "Disabled", 920, disabledImageWithPlainImageData);
drawImages(mainGC, gcData, "Greyed", 960, greyImageWithPlainImageData);

mainGC.drawText("--Image with PlainImageData (Handle Created Before Grey or Disabled Image Created)--", 20, 1000);
drawImages(mainGC, gcData, "Normal", 1040, imageWithPlainImageDataWithHandleAlreadyCreated);
drawImages(mainGC, gcData, "Disabled", 1080, disabledImageWithHandleCreated);
drawImages(mainGC, gcData, "Greyed", 1120, greyImageWithHandleCreated);
} finally {
mainGC.dispose ();
}
Expand All @@ -168,7 +206,7 @@ private void drawImages(GC mainGC, GCData gcData, String text, int y, final Imag
};
shell.addListener(SWT.Paint, l);

shell.setSize(400, 750);
shell.setSize(400, 850);
shell.open ();
while (!shell.isDisposed ()) {
if (!display.readAndDispatch ()) display.sleep ();
Expand Down
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