/**
* Sets the receiver's hot image to the argument, which may be null indicating that no hot image
* should be displayed.
*
* <p>The hot image is displayed when the mouse enters the receiver.
*
* @param image the hot image to display on the receiver (may be null)
* @exception IllegalArgumentException
* <ul>
* <li>ERROR_INVALID_ARGUMENT - if the image has been disposed
* </ul>
*
* @exception SWTException
* <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
* </ul>
*/
public void setHotImage(Image image) {
checkWidget();
if (image != null && image.isDisposed()) error(SWT.ERROR_INVALID_ARGUMENT);
if ((style & SWT.SEPARATOR) != 0) return;
hotImage = image;
if ((parent.style & SWT.FLAT) != 0) redraw();
}
public void setImage(Image image) {
checkWidget();
if ((style & SWT.SEPARATOR) != 0) return;
if (image != null && image.isDisposed()) error(SWT.ERROR_INVALID_ARGUMENT);
super.setImage(image);
updateImages(getEnabled() && parent.getEnabled());
}
/**
* Sets the receiver's disabled image to the argument, which may be null indicating that no
* disabled image should be displayed.
*
* <p>The disabled image is displayed when the receiver is disabled.
*
* @param image the disabled image to display on the receiver (may be null)
* @exception IllegalArgumentException
* <ul>
* <li>ERROR_INVALID_ARGUMENT - if the image has been disposed
* </ul>
*
* @exception SWTException
* <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
* </ul>
*/
public void setDisabledImage(Image image) {
checkWidget();
if (image != null && image.isDisposed()) error(SWT.ERROR_INVALID_ARGUMENT);
if ((style & SWT.SEPARATOR) != 0) return;
disabledImage = image;
if (!getEnabled()) redraw();
}
public void setImage(Image image) {
checkWidget();
if (image != null && image.isDisposed()) error(SWT.ERROR_INVALID_ARGUMENT);
if ((style & SWT.SEPARATOR) != 0) return;
super.setImage(image);
parent.relayout();
redraw();
}
void releaseWidget() {
super.releaseWidget();
releaseImages();
control = null;
toolTipText = null;
disabledImage = hotImage = null;
if (disabledImage2 != null) disabledImage2.dispose();
disabledImage2 = null;
}
public static void main(String[] args) {
Display display = new Display();
Shell shell = new Shell(display);
shell.setLayout(new GridLayout(2, false));
final Text text = new Text(shell, SWT.SEARCH | SWT.ICON_CANCEL);
Image image = null;
if ((text.getStyle() & SWT.ICON_CANCEL) == 0) {
image = display.getSystemImage(SWT.ICON_ERROR);
ToolBar toolBar = new ToolBar(shell, SWT.FLAT);
ToolItem item = new ToolItem(toolBar, SWT.PUSH);
item.setImage(image);
item.addSelectionListener(
new SelectionAdapter() {
@Override
public void widgetSelected(SelectionEvent e) {
text.setText("");
System.out.println("Search cancelled");
}
});
}
text.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
text.setText("Search text");
text.addSelectionListener(
new SelectionAdapter() {
@Override
public void widgetDefaultSelected(SelectionEvent e) {
if (e.detail == SWT.CANCEL) {
System.out.println("Search cancelled");
} else {
System.out.println("Searching for: " + text.getText() + "...");
}
}
});
shell.pack();
shell.open();
while (!shell.isDisposed()) {
if (!display.readAndDispatch()) display.sleep();
}
if (image != null) image.dispose();
display.dispose();
}
public void setImage(Image image) {
checkWidget();
if (image != null && image.isDisposed()) {
error(SWT.ERROR_INVALID_ARGUMENT);
}
super.setImage(image);
NSTableHeaderView headerView = ((NSOutlineView) parent.view).headerView();
if (headerView == null) return;
int index = parent.indexOf(nsColumn);
NSRect rect = headerView.headerRectOfColumn(index);
headerView.setNeedsDisplayInRect(rect);
}
LRESULT wmDrawChild(long /*int*/ wParam, long /*int*/ lParam) {
DRAWITEMSTRUCT struct = new DRAWITEMSTRUCT();
OS.MoveMemory(struct, lParam, DRAWITEMSTRUCT.sizeof);
if (image != null) {
GCData data = new GCData();
data.device = display;
GC gc = GC.win32_new(struct.hDC, data);
/*
* Bug in Windows. When a bitmap is included in the
* menu bar, the HDC seems to already include the left
* coordinate. The fix is to ignore this value when
* the item is in a menu bar.
*/
int x = (parent.style & SWT.BAR) != 0 ? MARGIN_WIDTH * 2 : struct.left;
Image image = getEnabled() ? this.image : new Image(display, this.image, SWT.IMAGE_DISABLE);
gc.drawImage(image, x, struct.top + MARGIN_HEIGHT);
if (this.image != image) image.dispose();
gc.dispose();
}
if (parent.foreground != -1) OS.SetTextColor(struct.hDC, parent.foreground);
return null;
}
/**
* Sets the receiver's image to the argument, which may be <code>null</code> indicating that no
* image should be displayed.
*
* <p>Note that a Button can display an image and text simultaneously on Windows (starting with
* XP), GTK+ and OSX. On other platforms, a Button that has an image and text set into it will
* display the image or text that was set most recently.
*
* @param image the image to display on the receiver (may be <code>null</code>)
* @exception IllegalArgumentException
* <ul>
* <li>ERROR_INVALID_ARGUMENT - if the image has been disposed
* </ul>
*
* @exception SWTException
* <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
* </ul>
*/
public void setImage(Image image) {
checkWidget();
if (image != null && image.isDisposed()) error(SWT.ERROR_INVALID_ARGUMENT);
if ((style & SWT.ARROW) != 0) return;
this.image = image;
OS.Image_Source(imageHandle, image != null ? image.handle : 0);
OS.UIElement_Visibility(
imageHandle, image != null ? OS.Visibility_Visible : OS.Visibility_Collapsed);
OS.UIElement_Visibility(
textHandle,
image != null && text.length() == 0 ? OS.Visibility_Collapsed : OS.Visibility_Visible);
int spacing = image != null && text.length() != 0 ? 3 : 0;
int margin = OS.gcnew_Thickness(0, 0, spacing, 0);
if (margin == 0) error(SWT.ERROR_NO_HANDLES);
OS.FrameworkElement_Margin(imageHandle, margin);
OS.GCHandle_Free(margin);
}
/** Compute the minimum size. */
private Point getTotalSize(Image image, String text) {
Point size = new Point(0, 0);
if (image != null) {
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;
}
int XmNexposureCallback(int w, int client_data, int call_data) {
if ((style & SWT.SEPARATOR) != 0) return 0;
int xDisplay = OS.XtDisplay(handle);
if (xDisplay == 0) return 0;
int xWindow = OS.XtWindow(handle);
if (xWindow == 0) return 0;
int[] argList = {
OS.XmNcolormap, 0,
OS.XmNwidth, 0,
OS.XmNheight, 0,
};
OS.XtGetValues(handle, argList, argList.length / 2);
int width = argList[3], height = argList[5];
Image currentImage = image;
boolean enabled = getEnabled();
if ((parent.style & SWT.FLAT) != 0) {
boolean hasCursor = hasCursor();
/* Set the shadow thickness */
int thickness = 0;
if (set || (hasCursor && enabled)) {
thickness = Math.min(2, display.buttonShadowThickness);
}
argList = new int[] {OS.XmNshadowThickness, thickness};
OS.XtSetValues(handle, argList, argList.length / 2);
/* Determine if hot image should be used */
if (enabled && hasCursor && hotImage != null) {
currentImage = hotImage;
}
}
GCData data = new GCData();
data.device = display;
data.display = xDisplay;
data.drawable = xWindow;
data.font = parent.font;
data.colormap = argList[1];
int xGC = OS.XCreateGC(xDisplay, xWindow, 0, null);
if (xGC == 0) SWT.error(SWT.ERROR_NO_HANDLES);
GC gc = GC.motif_new(xGC, data);
XmAnyCallbackStruct cb = new XmAnyCallbackStruct();
OS.memmove(cb, call_data, XmAnyCallbackStruct.sizeof);
if (cb.event != 0) {
XExposeEvent xEvent = new XExposeEvent();
OS.memmove(xEvent, cb.event, XExposeEvent.sizeof);
Rectangle rect = new Rectangle(xEvent.x, xEvent.y, xEvent.width, xEvent.height);
gc.setClipping(rect);
}
if (!enabled) {
currentImage = disabledImage;
if (currentImage == null && image != null) {
currentImage = new Image(display, image, SWT.IMAGE_DISABLE);
}
Color disabledColor = display.getSystemColor(SWT.COLOR_WIDGET_NORMAL_SHADOW);
gc.setForeground(disabledColor);
} else {
gc.setForeground(parent.getForeground());
}
gc.setBackground(parent.getBackground());
int textX = 0, textY = 0, textWidth = 0, textHeight = 0;
if (text.length() != 0) {
int flags = SWT.DRAW_DELIMITER | SWT.DRAW_TAB | SWT.DRAW_MNEMONIC;
Point textExtent = gc.textExtent(text, flags);
textWidth = textExtent.x;
textHeight = textExtent.y;
}
int imageX = 0, imageY = 0, imageWidth = 0, imageHeight = 0;
if (currentImage != null) {
Rectangle imageBounds = currentImage.getBounds();
imageWidth = imageBounds.width;
imageHeight = imageBounds.height;
}
int spacing = 0;
if (textWidth != 0 && imageWidth != 0) spacing = 2;
if ((parent.style & SWT.RIGHT) != 0) {
imageX = (width - imageWidth - textWidth - spacing) / 2;
imageY = (height - imageHeight) / 2;
textX = spacing + imageX + imageWidth;
textY = (height - textHeight) / 2;
} else {
imageX = (width - imageWidth) / 2;
imageY = (height - imageHeight - textHeight - spacing) / 2;
textX = (width - textWidth) / 2;
textY = spacing + imageY + imageHeight;
}
if ((style & SWT.DROP_DOWN) != 0) {
textX -= 6;
imageX -= 6;
}
if (textWidth > 0) {
int flags = SWT.DRAW_DELIMITER | SWT.DRAW_TAB | SWT.DRAW_MNEMONIC | SWT.DRAW_TRANSPARENT;
gc.drawText(text, textX, textY, flags);
}
if (imageWidth > 0) gc.drawImage(currentImage, imageX, imageY);
if ((style & SWT.DROP_DOWN) != 0) {
int startX = width - 12, startY = (height - 2) / 2;
int[] arrow = {startX, startY, startX + 3, startY + 3, startX + 6, startY};
gc.setBackground(parent.getForeground());
gc.fillPolygon(arrow);
gc.drawPolygon(arrow);
}
gc.dispose();
OS.XFreeGC(xDisplay, xGC);
if (!enabled && disabledImage == null) {
if (currentImage != null) currentImage.dispose();
}
return 0;
}
void updateImages(boolean enabled) {
if ((style & SWT.SEPARATOR) != 0) return;
long /*int*/ hwnd = parent.handle;
TBBUTTONINFO info = new TBBUTTONINFO();
info.cbSize = TBBUTTONINFO.sizeof;
info.dwMask = OS.TBIF_IMAGE;
OS.SendMessage(hwnd, OS.TB_GETBUTTONINFO, id, info);
if (info.iImage == OS.I_IMAGENONE && image == null) return;
ImageList imageList = parent.getImageList();
ImageList hotImageList = parent.getHotImageList();
ImageList disabledImageList = parent.getDisabledImageList();
if (info.iImage == OS.I_IMAGENONE) {
Rectangle bounds = image.getBounds();
int listStyle = parent.style & SWT.RIGHT_TO_LEFT;
if (imageList == null) {
imageList = display.getImageListToolBar(listStyle, bounds.width, bounds.height);
}
if (disabledImageList == null) {
disabledImageList =
display.getImageListToolBarDisabled(listStyle, bounds.width, bounds.height);
}
if (hotImageList == null) {
hotImageList = display.getImageListToolBarHot(listStyle, bounds.width, bounds.height);
}
Image disabled = disabledImage;
if (disabledImage == null) {
if (disabledImage2 != null) disabledImage2.dispose();
disabledImage2 = null;
disabled = image;
if (!enabled) {
disabled = disabledImage2 = new Image(display, image, SWT.IMAGE_DISABLE);
}
}
/*
* Bug in Windows. When a tool item with the style
* BTNS_CHECK or BTNS_CHECKGROUP is selected and then
* disabled, the item does not draw using the disabled
* image. The fix is to assign the disabled image in
* all image lists.
*/
Image image2 = image, hot = hotImage;
if ((style & (SWT.CHECK | SWT.RADIO)) != 0) {
if (!enabled) image2 = hot = disabled;
}
info.iImage = imageList.add(image2);
disabledImageList.add(disabled);
hotImageList.add(hot != null ? hot : image2);
parent.setImageList(imageList);
parent.setDisabledImageList(disabledImageList);
parent.setHotImageList(hotImageList);
} else {
Image disabled = null;
if (disabledImageList != null) {
if (image != null) {
if (disabledImage2 != null) disabledImage2.dispose();
disabledImage2 = null;
disabled = disabledImage;
if (disabledImage == null) {
disabled = image;
if (!enabled) {
disabled = disabledImage2 = new Image(display, image, SWT.IMAGE_DISABLE);
}
}
}
disabledImageList.put(info.iImage, disabled);
}
/*
* Bug in Windows. When a tool item with the style
* BTNS_CHECK or BTNS_CHECKGROUP is selected and then
* disabled, the item does not draw using the disabled
* image. The fix is to use the disabled image in all
* image lists.
*/
Image image2 = image, hot = hotImage;
if ((style & (SWT.CHECK | SWT.RADIO)) != 0) {
if (!enabled) image2 = hot = disabled;
}
if (imageList != null) imageList.put(info.iImage, image2);
if (hotImageList != null) {
hotImageList.put(info.iImage, hot != null ? hot : image2);
}
if (image == null) info.iImage = OS.I_IMAGENONE;
}
/*
* Bug in Windows. If the width of an item has already been
* calculated, the tool bar control will not recalculate it to
* include the space for the image. The fix is to set the width
* to zero, forcing the control recalculate the width for the item.
*/
info.dwMask |= OS.TBIF_SIZE;
info.cx = 0;
OS.SendMessage(hwnd, OS.TB_SETBUTTONINFO, id, info);
long /*int*/ hFont = OS.SendMessage(hwnd, OS.WM_GETFONT, 0, 0);
OS.SendMessage(hwnd, OS.WM_SETFONT, hFont, 0);
parent.layoutItems();
}
void paint(Event event) {
if (row == null) return;
int columnIndex = column == null ? 0 : table.indexOf(column);
GC gc = event.gc;
gc.setBackground(getBackground());
gc.setForeground(getForeground());
gc.fillRectangle(event.x, event.y, event.width, event.height);
int x = 0;
Point size = getSize();
Image image = row.getImage(columnIndex);
if (image != null) {
Rectangle imageSize = image.getBounds();
int imageY = (size.y - imageSize.height) / 2;
gc.drawImage(image, x, imageY);
x += imageSize.width;
}
String text = row.getText(columnIndex);
if (text.length() > 0) {
Rectangle bounds = row.getBounds(columnIndex);
Point extent = gc.stringExtent(text);
// Temporary code - need a better way to determine table trim
String platform = SWT.getPlatform();
if ("win32".equals(platform)) { // $NON-NLS-1$
if (table.getColumnCount() == 0 || columnIndex == 0) {
x += 2;
} else {
int alignmnent = column.getAlignment();
switch (alignmnent) {
case SWT.LEFT:
x += 6;
break;
case SWT.RIGHT:
x = bounds.width - extent.x - 6;
break;
case SWT.CENTER:
x += (bounds.width - x - extent.x) / 2;
break;
}
}
} else {
if (table.getColumnCount() == 0) {
x += 5;
} else {
int alignmnent = column.getAlignment();
switch (alignmnent) {
case SWT.LEFT:
x += 5;
break;
case SWT.RIGHT:
x = bounds.width - extent.x - 2;
break;
case SWT.CENTER:
x += (bounds.width - x - extent.x) / 2 + 2;
break;
}
}
}
int textY = (size.y - extent.y) / 2;
gc.drawString(text, x, textY);
}
if (isFocusControl()) {
Display display = getDisplay();
gc.setBackground(display.getSystemColor(SWT.COLOR_BLACK));
gc.setForeground(display.getSystemColor(SWT.COLOR_WHITE));
gc.drawFocus(0, 0, size.x, size.y);
}
}
void onPaint(PaintEvent event) {
Rectangle rect = getClientArea();
if (rect.width == 0 || rect.height == 0) return;
boolean shortenText = false;
String t = text;
Image img = image;
int availableWidth = Math.max(0, rect.width - (leftMargin + rightMargin));
Point extent = getTotalSize(img, t);
if (extent.x > availableWidth) {
img = null;
extent = getTotalSize(img, t);
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 + leftMargin;
if (align == SWT.CENTER) {
x = (rect.width - extent.x) / 2;
}
if (align == SWT.RIGHT) {
x = rect.width - rightMargin - 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);
}
/*
* Compute text height and image height. If image height is more than
* the text height, draw image starting from top margin. Else draw text
* starting from top margin.
*/
Rectangle imageRect = null;
int lineHeight = 0, textHeight = 0, imageHeight = 0;
if (img != null) {
imageRect = img.getBounds();
imageHeight = imageRect.height;
}
if (lines != null) {
lineHeight = gc.getFontMetrics().getHeight();
textHeight = lines.length * lineHeight;
}
int imageY = 0, midPoint = 0, lineY = 0;
if (imageHeight > textHeight) {
if (topMargin == DEFAULT_MARGIN && bottomMargin == DEFAULT_MARGIN)
imageY = rect.y + (rect.height - imageHeight) / 2;
else imageY = topMargin;
midPoint = imageY + imageHeight / 2;
lineY = midPoint - textHeight / 2;
} else {
if (topMargin == DEFAULT_MARGIN && bottomMargin == DEFAULT_MARGIN)
lineY = rect.y + (rect.height - textHeight) / 2;
else lineY = topMargin;
midPoint = lineY + textHeight / 2;
imageY = midPoint - imageHeight / 2;
}
// draw the image
if (img != null) {
gc.drawImage(
img, 0, 0, imageRect.width, imageHeight, x, imageY, imageRect.width, imageHeight);
x += imageRect.width + GAP;
extent.x -= imageRect.width + GAP;
}
// draw the text
if (lines != null) {
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 - rightMargin - lineWidth);
}
}
gc.drawText(lines[i], lineX, lineY, DRAW_FLAGS);
lineY += lineHeight;
}
}
}
