Package org.eclipse.swt.graphics

Examples of org.eclipse.swt.graphics.GC


      eraseGroup(event, (EntityGroup) element);
  }

  private void eraseNews(Event event, INews news) {
    final Scrollable scrollable = (Scrollable) event.widget;
    GC gc = event.gc;

    /* Handle selected News */
    if ((event.detail & SWT.SELECTED) != 0) {

      /* Some conditions under which we don't override the selection color */
      if (news.getLabel() == null || !scrollable.isFocusControl())
        return;

      Rectangle clArea = scrollable.getClientArea();
      Rectangle itemRect = event.getBounds();

      /* Paint the selection beyond the end of last column */
      expandRegion(event, scrollable, gc, clArea);

      /* Draw Rectangle */
      Color oldBackground = gc.getBackground();
      gc.setBackground(OwlUI.getColor(fResources, news.getLabel()));
      gc.fillRectangle(0, itemRect.y, clArea.width, itemRect.height);
      gc.setBackground(oldBackground);
      gc.setForeground(scrollable.getDisplay().getSystemColor(SWT.COLOR_WHITE));

      /* Mark as Selected being handled */
      event.detail &= ~SWT.SELECTED;
    }

    /* Handle Non-Selected flagged News */
    else if (news.isFlagged()) {
      Rectangle clArea = scrollable.getClientArea();
      Rectangle itemRect = event.getBounds();

      /* Paint the selection beyond the end of last column */
      expandRegion(event, scrollable, gc, clArea);

      /* Draw Rectangle */
      Color oldBackground = gc.getBackground();
      gc.setBackground(fStickyBgColor);
      gc.fillRectangle(0, itemRect.y, clArea.width, itemRect.height);
      gc.setBackground(oldBackground);

      /* Mark as Background being handled */
      event.detail &= ~SWT.BACKGROUND;
    }
  }
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  }

  private void eraseGroup(Event event, @SuppressWarnings("unused")
  EntityGroup group) {
    Scrollable scrollable = (Scrollable) event.widget;
    GC gc = event.gc;

    Rectangle area = scrollable.getClientArea();
    Rectangle rect = event.getBounds();

    /* Paint the selection beyond the end of last column */
    expandRegion(event, scrollable, gc, area);

    /* Draw Gradient Rectangle */
    Color oldForeground = gc.getForeground();
    Color oldBackground = gc.getBackground();

    /* Gradient */
    gc.setForeground(fGradientFgColor);
    gc.setBackground(fGradientBgColor);
    gc.fillGradientRectangle(0, rect.y, area.width, rect.height, true);

    /* Bottom Line */
    gc.setForeground(fGradientEndColor);
    gc.drawLine(0, rect.y + rect.height - 1, area.width, rect.y + rect.height - 1);

    gc.setForeground(oldForeground);
    gc.setBackground(oldBackground);

    /* Mark as Background being handled */
    event.detail &= ~SWT.BACKGROUND;
  }
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   * @param text
   * @param font
   * @return The size of the Text as Point.
   */
  public static Point getTextSize(Composite drawable, Font font, String text) {
    GC gc = new GC(drawable);
    gc.setFont(font);
    Point p = gc.textExtent(text);
    gc.dispose();

    return p;
  }
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      descriptionContainer.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, false, 3, 1));
      descriptionContainer.addMouseTrackListener(fMouseTrackListner);
      descriptionContainer.setBackground(fInnerContentCircle.getBackground());
      descriptionContainer.addPaintListener(new PaintListener() {
        public void paintControl(PaintEvent e) {
          GC gc = e.gc;
          Rectangle clArea = descriptionContainer.getClientArea();

          gc.setForeground(fNotifierColors.getBorder());
          gc.setBackground(fNotifierColors.getGradientEnd());
          gc.fillGradientRectangle(4, 1, clArea.width, 1, false);
        }
      });

      Label descriptionText = new Label(descriptionContainer, SWT.WRAP);
      descriptionText.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, false));
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      @Override
      public void controlResized(ControlEvent e) {
        Rectangle clArea = titleCircle.getClientArea();
        Image oldBgImage = fTitleBgImage;
        fTitleBgImage = new Image(titleCircle.getDisplay(), clArea.width, clArea.height);
        GC gc = new GC(fTitleBgImage);

        /* Gradient */
        drawGradient(gc, clArea);

        /* Fix Region Shape */
        fixRegion(gc, clArea);

        gc.dispose();

        titleCircle.setBackgroundImage(fTitleBgImage);

        if (oldBgImage != null)
          oldBgImage.dispose();
      }

      private void drawGradient(GC gc, Rectangle clArea) {
        gc.setForeground(fNotifierColors.getGradientBegin());
        gc.setBackground(fNotifierColors.getGradientEnd());
        gc.fillGradientRectangle(clArea.x, clArea.y, clArea.width, clArea.height, true);
      }

      private void fixRegion(GC gc, Rectangle clArea) {
        gc.setForeground(fNotifierColors.getBorder());

        /* Fill Top Left */
        gc.drawPoint(2, 0);
        gc.drawPoint(3, 0);
        gc.drawPoint(1, 1);
        gc.drawPoint(0, 2);
        gc.drawPoint(0, 3);

        /* Fill Top Right */
        gc.drawPoint(clArea.width - 4, 0);
        gc.drawPoint(clArea.width - 3, 0);
        gc.drawPoint(clArea.width - 2, 1);
        gc.drawPoint(clArea.width - 1, 2);
        gc.drawPoint(clArea.width - 1, 3);
      }
    });

    /* Title Label displaying RSSOwl */
    fTitleCircleLabel = new CLabel(titleCircle, SWT.NO_FOCUS);
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      Rectangle r = image.getBounds();
      size.x += r.width;
      size.y += r.height;
    }

    GC gc = new GC(this);
    if (text != null && text.length() > 0) {
      Point e = gc.textExtent(text, DRAW_FLAGS);
      size.x += e.x;
      size.y = Math.max(size.y, e.y);
      if (image != null)
        size.x += GAP;
    } else {
      size.y = Math.max(size.y, gc.getFontMetrics().getHeight());
    }
    gc.dispose();

    return size;
  }
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      if (extent.x > availableWidth) {
        shortenText = true;
      }
    }

    GC gc = event.gc;
    String[] lines = text == null ? null : splitString(text);

    // shorten the text
    if (shortenText) {
      extent.x = 0;
      for (int i = 0; i < lines.length; i++) {
        Point e = gc.textExtent(lines[i], DRAW_FLAGS);
        if (e.x > availableWidth) {
          lines[i] = shortenText(gc, lines[i], availableWidth);
          extent.x = Math.max(extent.x, getTotalSize(null, lines[i]).x);
        } else {
          extent.x = Math.max(extent.x, e.x);
        }
      }
      if (appToolTipText == null) {
        super.setToolTipText(text);
      }
    } else {
      super.setToolTipText(appToolTipText);
    }

    // determine horizontal position
    int x = rect.x + hIndent;
    if (align == SWT.CENTER) {
      x = (rect.width - extent.x) / 2;
    }
    if (align == SWT.RIGHT) {
      x = rect.width - hIndent - extent.x;
    }

    // draw a background image behind the text
    try {
      if (backgroundImage != null) {
        // draw a background image behind the text
        Rectangle imageRect = backgroundImage.getBounds();
        // tile image to fill space
        gc.setBackground(getBackground());
        gc.fillRectangle(rect);
        int xPos = 0;
        while (xPos < rect.width) {
          int yPos = 0;
          while (yPos < rect.height) {
            gc.drawImage(backgroundImage, xPos, yPos);
            yPos += imageRect.height;
          }
          xPos += imageRect.width;
        }
      } else if (gradientColors != null) {
        // draw a gradient behind the text
        final Color oldBackground = gc.getBackground();
        if (gradientColors.length == 1) {
          if (gradientColors[0] != null)
            gc.setBackground(gradientColors[0]);
          gc.fillRectangle(0, 0, rect.width, rect.height);
        } else {
          final Color oldForeground = gc.getForeground();
          Color lastColor = gradientColors[0];
          if (lastColor == null)
            lastColor = oldBackground;
          int pos = 0;
          for (int i = 0; i < gradientPercents.length; ++i) {
            gc.setForeground(lastColor);
            lastColor = gradientColors[i + 1];
            if (lastColor == null)
              lastColor = oldBackground;
            gc.setBackground(lastColor);
            if (gradientVertical) {
              final int gradientHeight = (gradientPercents[i] * rect.height / 100) - pos;
              gc.fillGradientRectangle(0, pos, rect.width, gradientHeight, true);
              pos += gradientHeight;
            } else {
              final int gradientWidth = (gradientPercents[i] * rect.width / 100) - pos;
              gc.fillGradientRectangle(pos, 0, gradientWidth, rect.height, false);
              pos += gradientWidth;
            }
          }
          if (gradientVertical && pos < rect.height) {
            gc.setBackground(getBackground());
            gc.fillRectangle(0, pos, rect.width, rect.height - pos);
          }
          if (!gradientVertical && pos < rect.width) {
            gc.setBackground(getBackground());
            gc.fillRectangle(pos, 0, rect.width - pos, rect.height);
          }
          gc.setForeground(oldForeground);
        }
        gc.setBackground(oldBackground);
      } else {
        if (background != null || (getStyle() & SWT.DOUBLE_BUFFERED) == 0) {
          gc.setBackground(getBackground());
          gc.fillRectangle(rect);
        }
      }
    } catch (SWTException e) {
      if ((getStyle() & SWT.DOUBLE_BUFFERED) == 0) {
        gc.setBackground(getBackground());
        gc.fillRectangle(rect);
      }
    }

    // draw border
    int style = getStyle();
    if ((style & SWT.SHADOW_IN) != 0 || (style & SWT.SHADOW_OUT) != 0) {
      paintBorder(gc, rect);
    }

    // draw the image
    if (img != null) {
      Rectangle imageRect = img.getBounds();
      gc.drawImage(img, 0, 0, imageRect.width, imageRect.height, x, (rect.height - imageRect.height) / 2, imageRect.width, imageRect.height);
      x += imageRect.width + GAP;
      extent.x -= imageRect.width + GAP;
    }
    // draw the text
    if (lines != null) {
      int lineHeight = gc.getFontMetrics().getHeight();
      int textHeight = lines.length * lineHeight;
      int lineY = Math.max(vIndent, rect.y + (rect.height - textHeight) / 2);
      gc.setForeground(getForeground());
      for (int i = 0; i < lines.length; i++) {
        int lineX = x;
        if (lines.length > 1) {
          if (align == SWT.CENTER) {
            int lineWidth = gc.textExtent(lines[i], DRAW_FLAGS).x;
            lineX = x + Math.max(0, (extent.x - lineWidth) / 2);
          }
          if (align == SWT.RIGHT) {
            int lineWidth = gc.textExtent(lines[i], DRAW_FLAGS).x;
            lineX = Math.max(x, rect.x + rect.width - hIndent - lineWidth);
          }
        }
        gc.drawText(lines[i], lineX, lineY, DRAW_FLAGS);
        lineY += lineHeight;
      }
    }
  }
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      return null;
    }

    void eraseGroup(Event event) {
      Scrollable scrollable = (Scrollable) event.widget;
      GC gc = event.gc;

      Rectangle area = scrollable.getClientArea();
      Rectangle rect = event.getBounds();

      /* Paint the selection beyond the end of last column */
      expandRegion(event, scrollable, gc, area);

      /* Draw Gradient Rectangle */
      Color oldForeground = gc.getForeground();
      Color oldBackground = gc.getBackground();

      /* Gradient */
      gc.setForeground(fGradientFgColor);
      gc.setBackground(fGradientBgColor);
      gc.fillGradientRectangle(0, rect.y, area.width, rect.height, true);

      /* Bottom Line */
      gc.setForeground(fGradientEndColor);
      gc.drawLine(0, rect.y + rect.height - 1, area.width, rect.y + rect.height - 1);

      gc.setForeground(oldForeground);
      gc.setBackground(oldBackground);

      /* Mark as Background being handled */
      event.detail &= ~SWT.BACKGROUND;
    }
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    conditionsContainer.setLayout(LayoutUtils.createGridLayout(2, 5, 10));
    conditionsContainer.setBackground(container.getDisplay().getSystemColor(SWT.COLOR_WHITE));
    conditionsContainer.setBackgroundMode(SWT.INHERIT_FORCE);
    conditionsContainer.addPaintListener(new PaintListener() {
      public void paintControl(PaintEvent e) {
        GC gc = e.gc;
        Rectangle clArea = conditionsContainer.getClientArea();
        gc.setForeground(conditionsContainer.getDisplay().getSystemColor(SWT.COLOR_GRAY));
        gc.drawLine(clArea.x, clArea.y, clArea.x + clArea.width, clArea.y);
      }
    });

    /* Search Conditions List */
    fSearchConditionList = new SearchConditionList(conditionsContainer, SWT.None, getDefaultConditions());
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      descriptionContainer.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, false, 4, 1));
      descriptionContainer.addMouseTrackListener(fMouseTrackListner);
      descriptionContainer.setBackground(fInnerContentCircle.getBackground());
      descriptionContainer.addPaintListener(new PaintListener() {
        public void paintControl(PaintEvent e) {
          GC gc = e.gc;
          Rectangle clArea = descriptionContainer.getClientArea();

          gc.setForeground(fNotifierColors.getBorder());
          gc.setBackground(fNotifierColors.getGradientEnd());
          gc.fillGradientRectangle(4, 1, clArea.width, 1, false);
        }
      });

      Label descriptionText = new Label(descriptionContainer, SWT.WRAP);
      descriptionText.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, false));
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