Example usage for org.eclipse.swt.graphics Color dispose

List of usage examples for org.eclipse.swt.graphics Color dispose

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Introduction

In this page you can find the example usage for org.eclipse.swt.graphics Color dispose.

Prototype

public void dispose()

Source Link

Usage

From source file:ImageAnalyzer.java

void paintPalette(PaintEvent event) {
    GC gc = event.gc;/*from w w  w  . j  a v a 2  s .co  m*/
    gc.fillRectangle(paletteCanvas.getClientArea());
    if (imageData.palette.isDirect) {
        // For a direct palette, display the masks.
        int y = py + 10;
        int xTab = 50;
        gc.drawString("rMsk", 10, y, true);
        gc.drawString(toHex4ByteString(imageData.palette.redMask), xTab, y, true);
        gc.drawString("gMsk", 10, y += 12, true);
        gc.drawString(toHex4ByteString(imageData.palette.greenMask), xTab, y, true);
        gc.drawString("bMsk", 10, y += 12, true);
        gc.drawString(toHex4ByteString(imageData.palette.blueMask), xTab, y, true);
        gc.drawString("rShf", 10, y += 12, true);
        gc.drawString(Integer.toString(imageData.palette.redShift), xTab, y, true);
        gc.drawString("gShf", 10, y += 12, true);
        gc.drawString(Integer.toString(imageData.palette.greenShift), xTab, y, true);
        gc.drawString("bShf", 10, y += 12, true);
        gc.drawString(Integer.toString(imageData.palette.blueShift), xTab, y, true);
    } else {
        // For an indexed palette, display the palette colors and indices.
        RGB[] rgbs = imageData.palette.getRGBs();
        if (rgbs != null) {
            int xTab1 = 40, xTab2 = 100;
            for (int i = 0; i < rgbs.length; i++) {
                int y = (i + 1) * 10 + py;
                gc.drawString(String.valueOf(i), 10, y, true);
                gc.drawString(toHexByteString(rgbs[i].red) + toHexByteString(rgbs[i].green)
                        + toHexByteString(rgbs[i].blue), xTab1, y, true);
                Color color = new Color(display, rgbs[i]);
                gc.setBackground(color);
                gc.fillRectangle(xTab2, y + 2, 10, 10);
                color.dispose();
            }
        }
    }
}

From source file:org.eclipse.swt.examples.controlexample.Tab.java

void changeFontOrColor(int index) {
    switch (index) {
    case FOREGROUND_COLOR: {
        Color oldColor = foregroundColor;
        if (oldColor == null) {
            Control[] controls = getExampleControls();
            if (controls.length > 0)
                oldColor = controls[0].getForeground();
        }/*  ww  w .  j  ava2s .  co m*/
        if (oldColor != null)
            colorDialog.setRGB(oldColor.getRGB()); // seed dialog with current color
        RGB rgb = colorDialog.open();
        if (rgb == null)
            return;
        oldColor = foregroundColor; // save old foreground color to dispose when done
        foregroundColor = new Color(display, rgb);
        setExampleWidgetForeground();
        if (oldColor != null)
            oldColor.dispose();
    }
        break;
    case BACKGROUND_COLOR: {
        Color oldColor = backgroundColor;
        if (oldColor == null) {
            Control[] controls = getExampleControls();
            if (controls.length > 0)
                oldColor = controls[0].getBackground(); // seed dialog with current color
        }
        if (oldColor != null)
            colorDialog.setRGB(oldColor.getRGB());
        RGB rgb = colorDialog.open();
        if (rgb == null)
            return;
        oldColor = backgroundColor; // save old background color to dispose when done
        backgroundColor = new Color(display, rgb);
        setExampleWidgetBackground();
        if (oldColor != null)
            oldColor.dispose();
    }
        break;
    case FONT: {
        Font oldFont = font;
        if (oldFont == null) {
            Control[] controls = getExampleControls();
            if (controls.length > 0)
                oldFont = controls[0].getFont();
        }
        if (oldFont != null)
            fontDialog.setFontList(oldFont.getFontData()); // seed dialog with current font
        FontData fontData = fontDialog.open();
        if (fontData == null)
            return;
        oldFont = font; // dispose old font when done
        font = new Font(display, fontData);
        setExampleWidgetFont();
        setExampleWidgetSize();
        if (oldFont != null)
            oldFont.dispose();
    }
        break;
    }
}

From source file:ImageAnalyzer.java

void animateLoop() {
    // Create an off-screen image to draw on, and a GC to draw with.
    // Both are disposed after the animation.
    Image offScreenImage = new Image(display, loader.logicalScreenWidth, loader.logicalScreenHeight);
    GC offScreenImageGC = new GC(offScreenImage);

    try {//from  w  w  w. jav  a2  s.co m
        // Use syncExec to get the background color of the imageCanvas.
        display.syncExec(new Runnable() {
            public void run() {
                canvasBackground = imageCanvas.getBackground();
            }
        });

        // Fill the off-screen image with the background color of the
        // canvas.
        offScreenImageGC.setBackground(canvasBackground);
        offScreenImageGC.fillRectangle(0, 0, loader.logicalScreenWidth, loader.logicalScreenHeight);

        // Draw the current image onto the off-screen image.
        offScreenImageGC.drawImage(image, 0, 0, imageData.width, imageData.height, imageData.x, imageData.y,
                imageData.width, imageData.height);

        int repeatCount = loader.repeatCount;
        while (animate && (loader.repeatCount == 0 || repeatCount > 0)) {
            if (imageData.disposalMethod == SWT.DM_FILL_BACKGROUND) {
                // Fill with the background color before drawing.
                Color bgColor = null;
                int backgroundPixel = loader.backgroundPixel;
                if (showBackground && backgroundPixel != -1) {
                    // Fill with the background color.
                    RGB backgroundRGB = imageData.palette.getRGB(backgroundPixel);
                    bgColor = new Color(null, backgroundRGB);
                }
                try {
                    offScreenImageGC.setBackground(bgColor != null ? bgColor : canvasBackground);
                    offScreenImageGC.fillRectangle(imageData.x, imageData.y, imageData.width, imageData.height);
                } finally {
                    if (bgColor != null)
                        bgColor.dispose();
                }
            } else if (imageData.disposalMethod == SWT.DM_FILL_PREVIOUS) {
                // Restore the previous image before drawing.
                offScreenImageGC.drawImage(image, 0, 0, imageData.width, imageData.height, imageData.x,
                        imageData.y, imageData.width, imageData.height);
            }

            // Get the next image data.
            imageDataIndex = (imageDataIndex + 1) % imageDataArray.length;
            imageData = imageDataArray[imageDataIndex];
            image.dispose();
            image = new Image(display, imageData);

            // Draw the new image data.
            offScreenImageGC.drawImage(image, 0, 0, imageData.width, imageData.height, imageData.x, imageData.y,
                    imageData.width, imageData.height);

            // Draw the off-screen image to the screen.
            imageCanvasGC.drawImage(offScreenImage, 0, 0);

            // Sleep for the specified delay time before drawing again.
            try {
                Thread.sleep(visibleDelay(imageData.delayTime * 10));
            } catch (InterruptedException e) {
            }

            // If we have just drawn the last image in the set,
            // then decrement the repeat count.
            if (imageDataIndex == imageDataArray.length - 1)
                repeatCount--;
        }
    } finally {
        offScreenImage.dispose();
        offScreenImageGC.dispose();
    }
}

From source file:org.eclipse.swt.examples.imageanalyzer.ImageAnalyzer.java

void animateLoop() {
    // Create an off-screen image to draw on, and a GC to draw with.
    // Both are disposed after the animation.
    Image offScreenImage = new Image(display, loader.logicalScreenWidth, loader.logicalScreenHeight);
    GC offScreenImageGC = new GC(offScreenImage);

    try {/*from w  w  w .j  a v  a 2 s .c  om*/
        // Use syncExec to get the background color of the imageCanvas.
        display.syncExec(() -> canvasBackground = imageCanvas.getBackground());

        // Fill the off-screen image with the background color of the canvas.
        offScreenImageGC.setBackground(canvasBackground);
        offScreenImageGC.fillRectangle(0, 0, loader.logicalScreenWidth, loader.logicalScreenHeight);

        // Draw the current image onto the off-screen image.
        offScreenImageGC.drawImage(image, 0, 0, imageData.width, imageData.height, imageData.x, imageData.y,
                imageData.width, imageData.height);

        int repeatCount = loader.repeatCount;
        while (animate && (loader.repeatCount == 0 || repeatCount > 0)) {
            if (imageData.disposalMethod == SWT.DM_FILL_BACKGROUND) {
                // Fill with the background color before drawing.
                Color bgColor = null;
                int backgroundPixel = loader.backgroundPixel;
                if (showBackground && backgroundPixel != -1) {
                    // Fill with the background color.
                    RGB backgroundRGB = imageData.palette.getRGB(backgroundPixel);
                    bgColor = new Color(null, backgroundRGB);
                }
                try {
                    offScreenImageGC.setBackground(bgColor != null ? bgColor : canvasBackground);
                    offScreenImageGC.fillRectangle(imageData.x, imageData.y, imageData.width, imageData.height);
                } finally {
                    if (bgColor != null)
                        bgColor.dispose();
                }
            } else if (imageData.disposalMethod == SWT.DM_FILL_PREVIOUS) {
                // Restore the previous image before drawing.
                offScreenImageGC.drawImage(image, 0, 0, imageData.width, imageData.height, imageData.x,
                        imageData.y, imageData.width, imageData.height);
            }

            // Get the next image data.
            imageDataIndex = (imageDataIndex + 1) % imageDataArray.length;
            imageData = imageDataArray[imageDataIndex];
            image.dispose();
            image = new Image(display, imageData);

            // Draw the new image data.
            offScreenImageGC.drawImage(image, 0, 0, imageData.width, imageData.height, imageData.x, imageData.y,
                    imageData.width, imageData.height);

            // Draw the off-screen image to the screen.
            imageCanvasGC.drawImage(offScreenImage, 0, 0);

            // Sleep for the specified delay time before drawing again.
            try {
                Thread.sleep(visibleDelay(imageData.delayTime * 10));
            } catch (InterruptedException e) {
            }

            // If we have just drawn the last image in the set,
            // then decrement the repeat count.
            if (imageDataIndex == imageDataArray.length - 1)
                repeatCount--;
        }
    } finally {
        offScreenImage.dispose();
        offScreenImageGC.dispose();
    }
}

From source file:PaintExample.java

/**
 * Disposes of all resources associated with a particular
 * instance of the PaintExample./*from  w  w w  .  j ava2  s.c  om*/
 */
public void dispose() {
    if (paintSurface != null)
        paintSurface.dispose();
    if (paintColors != null) {
        for (int i = 0; i < paintColors.length; ++i) {
            final Color color = paintColors[i];
            if (color != null)
                color.dispose();
        }
    }
    paintDefaultFont = null;
    paintColors = null;
    paintSurface = null;
    freeResources();
}

From source file:PrintKTableExample.java

public void drawCell(GC gc, Rectangle rect, int col, int row, Object content, boolean focus, boolean fixed,
        boolean clicked) {
    // Performance test:
    /*/*from  w  ww  .j  a  v a  2s  . com*/
     * gc.setBackground(Display.getCurrent().getSystemColor(SWT.COLOR_RED));
     * gc.fillRectangle(rect);
     * 
     * int j=1; for (int i = 0; i < 10000000; i++) { j++; }
     */
    Color color = new Color(m_Display, (RGB) content);
    gc.setBackground(m_Display.getSystemColor(SWT.COLOR_WHITE));
    rect.height++;
    rect.width++;
    gc.fillRectangle(rect);

    gc.setBackground(color);
    if (!focus) {
        rect.x += 1;
        rect.y += 1;
        rect.height -= 2;
        rect.width -= 2;
    }
    gc.fillRectangle(rect);
    color.dispose();
}

From source file:CustomControlExample.java

/**
 * Sets the foreground color, background color, and font of the "Example"
 * widgets to their default settings. Also sets foreground and background
 * color of the Node 1 TreeItems to default settings.
 *///ww  w  .j  av  a 2  s .c o  m
void resetColorsAndFonts() {
    Color oldColor = foregroundSelectionColor;
    foregroundSelectionColor = null;
    if (oldColor != null)
        oldColor.dispose();
    oldColor = backgroundSelectionColor;
    backgroundSelectionColor = null;
    if (oldColor != null)
        oldColor.dispose();
    Font oldFont = itemFont;
    itemFont = null;
    if (oldFont != null)
        oldFont.dispose();
    super.resetColorsAndFonts();
}

From source file:CustomControlExample.java

/**
 * Sets the foreground color, background color, and font of the "Example"
 * widgets to their default settings. Subclasses may extend in order to
 * reset other colors and fonts to default settings as well.
 *//*from   ww w .  j  a  v  a  2  s  .  co  m*/
void resetColorsAndFonts() {
    Color oldColor = foregroundColor;
    foregroundColor = null;
    setExampleWidgetForeground();
    if (oldColor != null)
        oldColor.dispose();
    oldColor = backgroundColor;
    backgroundColor = null;
    setExampleWidgetBackground();
    if (oldColor != null)
        oldColor.dispose();
    Font oldFont = font;
    font = null;
    setExampleWidgetFont();
    setExampleWidgetSize();
    if (oldFont != null)
        oldFont.dispose();
}

From source file:CustomControlExample.java

/**
 * Sets the foreground color, background color, and font of the "Example"
 * widgets to their default settings. Also sets foreground and background
 * color of the Node 1 TreeItems to default settings.
 *//*from w  ww.ja va2s.c o  m*/
void resetColorsAndFonts() {
    super.resetColorsAndFonts();
    Color oldColor = itemForegroundColor;
    itemForegroundColor = null;
    setItemForeground();
    if (oldColor != null)
        oldColor.dispose();
    oldColor = itemBackgroundColor;
    itemBackgroundColor = null;
    setItemBackground();
    if (oldColor != null)
        oldColor.dispose();
    Font oldFont = font;
    itemFont = null;
    setItemFont();
    setExampleWidgetSize();
    if (oldFont != null)
        oldFont.dispose();
}

From source file:CustomControlExample.java

/**
 * Creates the "Colors" group.//w  w w.j a va2s  .c  o  m
 */
void createColorGroup() {
    super.createColorGroup();

    itemGroup = new Group(colorGroup, SWT.NONE);
    itemGroup.setText(ControlExample.getResourceString("Tree_Item_Colors"));
    GridData data = new GridData();
    data.horizontalSpan = 2;
    itemGroup.setLayoutData(data);
    itemGroup.setLayout(new GridLayout(2, false));
    new Label(itemGroup, SWT.NONE).setText(ControlExample.getResourceString("Foreground_Color"));
    itemForegroundButton = new Button(itemGroup, SWT.PUSH);
    new Label(itemGroup, SWT.NONE).setText(ControlExample.getResourceString("Background_Color"));
    itemBackgroundButton = new Button(itemGroup, SWT.PUSH);
    itemFontButton = new Button(itemGroup, SWT.PUSH);
    itemFontButton.setText(ControlExample.getResourceString("Font"));
    itemFontButton.setLayoutData(new GridData(GridData.HORIZONTAL_ALIGN_FILL));

    Shell shell = colorGroup.getShell();
    final ColorDialog foregroundDialog = new ColorDialog(shell);
    final ColorDialog backgroundDialog = new ColorDialog(shell);
    final FontDialog fontDialog = new FontDialog(shell);

    int imageSize = 12;
    Display display = shell.getDisplay();
    itemForegroundImage = new Image(display, imageSize, imageSize);
    itemBackgroundImage = new Image(display, imageSize, imageSize);

    /* Add listeners to set the colors and font */
    itemForegroundButton.setImage(itemForegroundImage);
    itemForegroundButton.addSelectionListener(new SelectionAdapter() {
        public void widgetSelected(SelectionEvent event) {
            Color oldColor = itemForegroundColor;
            if (oldColor == null)
                oldColor = textNode1.getForeground();
            foregroundDialog.setRGB(oldColor.getRGB());
            RGB rgb = foregroundDialog.open();
            if (rgb == null)
                return;
            oldColor = itemForegroundColor;
            itemForegroundColor = new Color(event.display, rgb);
            setItemForeground();
            if (oldColor != null)
                oldColor.dispose();
        }
    });
    itemBackgroundButton.setImage(itemBackgroundImage);
    itemBackgroundButton.addSelectionListener(new SelectionAdapter() {
        public void widgetSelected(SelectionEvent event) {
            Color oldColor = itemBackgroundColor;
            if (oldColor == null)
                oldColor = textNode1.getBackground();
            backgroundDialog.setRGB(oldColor.getRGB());
            RGB rgb = backgroundDialog.open();
            if (rgb == null)
                return;
            oldColor = itemBackgroundColor;
            itemBackgroundColor = new Color(event.display, rgb);
            setItemBackground();
            if (oldColor != null)
                oldColor.dispose();
        }
    });
    itemFontButton.addSelectionListener(new SelectionAdapter() {
        public void widgetSelected(SelectionEvent event) {
            Font oldFont = itemFont;
            if (oldFont == null)
                oldFont = textNode1.getFont();
            fontDialog.setFontList(oldFont.getFontData());
            FontData fontData = fontDialog.open();
            if (fontData == null)
                return;
            oldFont = itemFont;
            itemFont = new Font(event.display, fontData);
            setItemFont();
            setExampleWidgetSize();
            if (oldFont != null)
                oldFont.dispose();
        }
    });
    shell.addDisposeListener(new DisposeListener() {
        public void widgetDisposed(DisposeEvent event) {
            if (itemBackgroundImage != null)
                itemBackgroundImage.dispose();
            if (itemForegroundImage != null)
                itemForegroundImage.dispose();
            if (itemBackgroundColor != null)
                itemBackgroundColor.dispose();
            if (itemForegroundColor != null)
                itemForegroundColor.dispose();
            if (itemFont != null)
                itemFont.dispose();
            itemBackgroundColor = null;
            itemForegroundColor = null;
            itemFont = null;
        }
    });
}