| /******************************************************************************* |
| * Copyright (c) 2000, 2011 IBM Corporation and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.swt.widgets; |
| |
| |
| import org.eclipse.swt.internal.win32.*; |
| import org.eclipse.swt.*; |
| import org.eclipse.swt.graphics.*; |
| |
| /** |
| * Instances of this class represent a non-selectable |
| * user interface object that displays a string or image. |
| * When SEPARATOR is specified, displays a single |
| * vertical or horizontal line. |
| * <p> |
| * Shadow styles are hints and may not be honored |
| * by the platform. To create a separator label |
| * with the default shadow style for the platform, |
| * do not specify a shadow style. |
| * </p> |
| * <dl> |
| * <dt><b>Styles:</b></dt> |
| * <dd>SEPARATOR, HORIZONTAL, VERTICAL</dd> |
| * <dd>SHADOW_IN, SHADOW_OUT, SHADOW_NONE</dd> |
| * <dd>CENTER, LEFT, RIGHT, WRAP</dd> |
| * <dt><b>Events:</b></dt> |
| * <dd>(none)</dd> |
| * </dl> |
| * <p> |
| * Note: Only one of SHADOW_IN, SHADOW_OUT and SHADOW_NONE may be specified. |
| * SHADOW_NONE is a HINT. Only one of HORIZONTAL and VERTICAL may be specified. |
| * Only one of CENTER, LEFT and RIGHT may be specified. |
| * </p><p> |
| * IMPORTANT: This class is <em>not</em> intended to be subclassed. |
| * </p> |
| * |
| * @see <a href="http://www.eclipse.org/swt/snippets/#label">Label snippets</a> |
| * @see <a href="http://www.eclipse.org/swt/examples.php">SWT Example: ControlExample</a> |
| * @see <a href="http://www.eclipse.org/swt/">Sample code and further information</a> |
| * @noextend This class is not intended to be subclassed by clients. |
| */ |
| public class Label extends Control { |
| String text = ""; |
| Image image; |
| static final int MARGIN = 4; |
| static /*final*/ boolean IMAGE_AND_TEXT = false; |
| static final int /*long*/ LabelProc; |
| static final TCHAR LabelClass = new TCHAR (0, "STATIC", true); |
| static { |
| WNDCLASS lpWndClass = new WNDCLASS (); |
| OS.GetClassInfo (0, LabelClass, lpWndClass); |
| LabelProc = lpWndClass.lpfnWndProc; |
| } |
| |
| /** |
| * Constructs a new instance of this class given its parent |
| * and a style value describing its behavior and appearance. |
| * <p> |
| * The style value is either one of the style constants defined in |
| * class <code>SWT</code> which is applicable to instances of this |
| * class, or must be built by <em>bitwise OR</em>'ing together |
| * (that is, using the <code>int</code> "|" operator) two or more |
| * of those <code>SWT</code> style constants. The class description |
| * lists the style constants that are applicable to the class. |
| * Style bits are also inherited from superclasses. |
| * </p> |
| * |
| * @param parent a composite control which will be the parent of the new instance (cannot be null) |
| * @param style the style of control to construct |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the parent is null</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the parent</li> |
| * <li>ERROR_INVALID_SUBCLASS - if this class is not an allowed subclass</li> |
| * </ul> |
| * |
| * @see SWT#SEPARATOR |
| * @see SWT#HORIZONTAL |
| * @see SWT#VERTICAL |
| * @see SWT#SHADOW_IN |
| * @see SWT#SHADOW_OUT |
| * @see SWT#SHADOW_NONE |
| * @see SWT#CENTER |
| * @see SWT#LEFT |
| * @see SWT#RIGHT |
| * @see SWT#WRAP |
| * @see Widget#checkSubclass |
| * @see Widget#getStyle |
| */ |
| public Label (Composite parent, int style) { |
| super (parent, checkStyle (style)); |
| } |
| |
| int /*long*/ callWindowProc (int /*long*/ hwnd, int msg, int /*long*/ wParam, int /*long*/ lParam) { |
| if (handle == 0) return 0; |
| /* |
| * Feature in Windows 7. When the user double clicks |
| * on the label, the text of the label is copied to the |
| * clipboard. This is unwanted. The fix is to avoid |
| * calling the label window proc. |
| */ |
| if (!OS.IsWinCE && OS.WIN32_VERSION >= OS.VERSION(6, 1)) { |
| switch (msg) { |
| case OS.WM_LBUTTONDBLCLK: return OS.DefWindowProc (hwnd, msg, wParam, lParam); |
| } |
| } |
| return OS.CallWindowProc (LabelProc, hwnd, msg, wParam, lParam); |
| } |
| |
| static int checkStyle (int style) { |
| style |= SWT.NO_FOCUS; |
| if ((style & SWT.SEPARATOR) != 0) { |
| style = checkBits (style, SWT.VERTICAL, SWT.HORIZONTAL, 0, 0, 0, 0); |
| return checkBits (style, SWT.SHADOW_OUT, SWT.SHADOW_IN, SWT.SHADOW_NONE, 0, 0, 0); |
| } |
| return checkBits (style, SWT.LEFT, SWT.CENTER, SWT.RIGHT, 0, 0, 0); |
| } |
| |
| public Point computeSize (int wHint, int hHint, boolean changed) { |
| checkWidget (); |
| int width = 0, height = 0, border = getBorderWidth (); |
| if ((style & SWT.SEPARATOR) != 0) { |
| int lineWidth = OS.GetSystemMetrics (OS.SM_CXBORDER); |
| if ((style & SWT.HORIZONTAL) != 0) { |
| width = DEFAULT_WIDTH; height = lineWidth * 2; |
| } else { |
| width = lineWidth * 2; height = DEFAULT_HEIGHT; |
| } |
| if (wHint != SWT.DEFAULT) width = wHint; |
| if (hHint != SWT.DEFAULT) height = hHint; |
| width += border * 2; height += border * 2; |
| return new Point (width, height); |
| } |
| int bits = OS.GetWindowLong (handle, OS.GWL_STYLE); |
| boolean drawText = true; |
| boolean drawImage = (bits & OS.SS_OWNERDRAW) == OS.SS_OWNERDRAW; |
| if (drawImage) { |
| if (image != null) { |
| Rectangle rect = image.getBounds(); |
| width += rect.width; |
| height += rect.height; |
| if (IMAGE_AND_TEXT) { |
| if (text.length () != 0) width += MARGIN; |
| } else { |
| drawText = false; |
| } |
| } |
| } |
| if (drawText) { |
| int /*long*/ hDC = OS.GetDC (handle); |
| int /*long*/ newFont = OS.SendMessage (handle, OS.WM_GETFONT, 0, 0); |
| int /*long*/ oldFont = OS.SelectObject (hDC, newFont); |
| int length = OS.GetWindowTextLength (handle); |
| if (length == 0) { |
| TEXTMETRIC tm = OS.IsUnicode ? (TEXTMETRIC) new TEXTMETRICW () : new TEXTMETRICA (); |
| OS.GetTextMetrics (hDC, tm); |
| height = Math.max (height, tm.tmHeight); |
| } else { |
| RECT rect = new RECT (); |
| int flags = OS.DT_CALCRECT | OS.DT_EDITCONTROL | OS.DT_EXPANDTABS; |
| if ((style & SWT.WRAP) != 0 && wHint != SWT.DEFAULT) { |
| flags |= OS.DT_WORDBREAK; |
| rect.right = Math.max (0, wHint - width); |
| } |
| TCHAR buffer = new TCHAR (getCodePage (), length + 1); |
| OS.GetWindowText (handle, buffer, length + 1); |
| OS.DrawText (hDC, buffer, length, rect, flags); |
| width += rect.right - rect.left; |
| height = Math.max (height, rect.bottom - rect.top); |
| } |
| if (newFont != 0) OS.SelectObject (hDC, oldFont); |
| OS.ReleaseDC (handle, hDC); |
| } |
| if (wHint != SWT.DEFAULT) width = wHint; |
| if (hHint != SWT.DEFAULT) height = hHint; |
| width += border * 2; |
| height += border * 2; |
| /* |
| * Feature in WinCE PPC. Text labels have a trim |
| * of one pixel wide on the right and left side. |
| * The fix is to increase the width to include |
| * this trim. |
| */ |
| if (OS.IsWinCE && !drawImage) width += 2; |
| return new Point (width, height); |
| } |
| |
| void createHandle () { |
| super.createHandle (); |
| state |= THEME_BACKGROUND; |
| } |
| |
| /** |
| * Returns a value which describes the position of the |
| * text or image in the receiver. The value will be one of |
| * <code>LEFT</code>, <code>RIGHT</code> or <code>CENTER</code> |
| * unless the receiver is a <code>SEPARATOR</code> label, in |
| * which case, <code>NONE</code> is returned. |
| * |
| * @return the alignment |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| */ |
| public int getAlignment () { |
| checkWidget (); |
| if ((style & SWT.SEPARATOR) != 0) return 0; |
| if ((style & SWT.LEFT) != 0) return SWT.LEFT; |
| if ((style & SWT.CENTER) != 0) return SWT.CENTER; |
| if ((style & SWT.RIGHT) != 0) return SWT.RIGHT; |
| return SWT.LEFT; |
| } |
| |
| boolean getBufferredPaint() { |
| Shell shell = getShell (); |
| if ((shell.style & SWT.TRIM_FILL) != 0 && (style & SWT.TRIM_FILL) != 0) { |
| // if (image != null) return false;//note: can't be transparent for all images... |
| return true;//bad: should be transparent with custom draw |
| } |
| return false; |
| } |
| |
| /** |
| * Returns the receiver's image if it has one, or null |
| * if it does not. |
| * |
| * @return the receiver's image |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| */ |
| public Image getImage () { |
| checkWidget (); |
| return image; |
| } |
| |
| String getNameText () { |
| return getText (); |
| } |
| |
| /** |
| * Returns the receiver's text, which will be an empty |
| * string if it has never been set or if the receiver is |
| * a <code>SEPARATOR</code> label. |
| * |
| * @return the receiver's text |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| */ |
| public String getText () { |
| checkWidget (); |
| if ((style & SWT.SEPARATOR) != 0) return ""; |
| return text; |
| } |
| |
| boolean mnemonicHit (char key) { |
| Control control = this; |
| while (control.parent != null) { |
| Control [] children = control.parent._getChildren (); |
| int index = 0; |
| while (index < children.length) { |
| if (children [index] == control) break; |
| index++; |
| } |
| index++; |
| if (index < children.length) { |
| if (children [index].setFocus ()) return true; |
| } |
| control = control.parent; |
| } |
| return false; |
| } |
| |
| boolean mnemonicMatch (char key) { |
| char mnemonic = findMnemonic (getText ()); |
| if (mnemonic == '\0') return false; |
| return Character.toUpperCase (key) == Character.toUpperCase (mnemonic); |
| } |
| |
| void releaseWidget () { |
| super.releaseWidget (); |
| text = null; |
| image = null; |
| } |
| |
| /** |
| * Controls how text and images will be displayed in the receiver. |
| * The argument should be one of <code>LEFT</code>, <code>RIGHT</code> |
| * or <code>CENTER</code>. If the receiver is a <code>SEPARATOR</code> |
| * label, the argument is ignored and the alignment is not changed. |
| * |
| * @param alignment the new alignment |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| */ |
| public void setAlignment (int alignment) { |
| checkWidget (); |
| if ((style & SWT.SEPARATOR) != 0) return; |
| if ((alignment & (SWT.LEFT | SWT.RIGHT | SWT.CENTER)) == 0) return; |
| style &= ~(SWT.LEFT | SWT.RIGHT | SWT.CENTER); |
| style |= alignment & (SWT.LEFT | SWT.RIGHT | SWT.CENTER); |
| int bits = OS.GetWindowLong (handle, OS.GWL_STYLE); |
| if ((bits & OS.SS_OWNERDRAW) != OS.SS_OWNERDRAW) { |
| bits &= ~(OS.SS_LEFTNOWORDWRAP | OS.SS_CENTER | OS.SS_RIGHT); |
| if ((style & SWT.LEFT) != 0) { |
| if ((style & SWT.WRAP) != 0) { |
| bits |= OS.SS_LEFT; |
| } else { |
| bits |= OS.SS_LEFTNOWORDWRAP; |
| } |
| } |
| if ((style & SWT.CENTER) != 0) bits |= OS.SS_CENTER; |
| if ((style & SWT.RIGHT) != 0) bits |= OS.SS_RIGHT; |
| OS.SetWindowLong (handle, OS.GWL_STYLE, bits); |
| } |
| OS.InvalidateRect (handle, null, true); |
| } |
| |
| /** |
| * Sets the receiver's image to the argument, which may be |
| * null indicating that no image should be displayed. |
| * |
| * @param image the image to display on the receiver (may be null) |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_INVALID_ARGUMENT - if the image has been disposed</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| */ |
| public void setImage (Image image) { |
| checkWidget (); |
| if ((style & SWT.SEPARATOR) != 0) return; |
| if (image != null && image.isDisposed()) error(SWT.ERROR_INVALID_ARGUMENT); |
| this.image = image; |
| int bits = OS.GetWindowLong (handle, OS.GWL_STYLE); |
| if ((bits & OS.SS_OWNERDRAW) != OS.SS_OWNERDRAW) { |
| bits &= ~(OS.SS_LEFTNOWORDWRAP | OS.SS_CENTER | OS.SS_RIGHT); |
| bits |= OS.SS_OWNERDRAW; |
| OS.SetWindowLong (handle, OS.GWL_STYLE, bits); |
| } |
| OS.InvalidateRect (handle, null, true); |
| } |
| |
| /** |
| * Sets the receiver's text. |
| * <p> |
| * This method sets the widget label. The label may include |
| * the mnemonic character and line delimiters. |
| * </p> |
| * <p> |
| * Mnemonics are indicated by an '&' that causes the next |
| * character to be the mnemonic. When the user presses a |
| * key sequence that matches the mnemonic, focus is assigned |
| * to the control that follows the label. On most platforms, |
| * the mnemonic appears underlined but may be emphasised in a |
| * platform specific manner. The mnemonic indicator character |
| * '&' can be escaped by doubling it in the string, causing |
| * a single '&' to be displayed. |
| * </p> |
| * |
| * @param string the new text |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the text is null</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| */ |
| public void setText (String string) { |
| checkWidget (); |
| if (string == null) error (SWT.ERROR_NULL_ARGUMENT); |
| if ((style & SWT.SEPARATOR) != 0) return; |
| /* |
| * Feature in Windows. For some reason, SetWindowText() for |
| * static controls redraws the control, even when the text has |
| * has not changed. The fix is to check for this case and do |
| * nothing. |
| */ |
| if (string.equals (text)) return; |
| text = string; |
| if (image == null || !IMAGE_AND_TEXT) { |
| int oldBits = OS.GetWindowLong (handle, OS.GWL_STYLE), newBits = oldBits; |
| newBits &= ~OS.SS_OWNERDRAW; |
| if ((style & SWT.LEFT) != 0) { |
| if ((style & SWT.WRAP) != 0) { |
| newBits |= OS.SS_LEFT; |
| } else { |
| newBits |= OS.SS_LEFTNOWORDWRAP; |
| } |
| } |
| if ((style & SWT.CENTER) != 0) newBits |= OS.SS_CENTER; |
| if ((style & SWT.RIGHT) != 0) newBits |= OS.SS_RIGHT; |
| if ((style & SWT.TRIM_FILL) != 0) newBits |= OS.SS_OWNERDRAW; // if glass is turned on, text-only labels need to be owner-drawn as well |
| if (oldBits != newBits) OS.SetWindowLong (handle, OS.GWL_STYLE, newBits); |
| } |
| string = Display.withCrLf (string); |
| TCHAR buffer = new TCHAR (getCodePage (), string, true); |
| OS.SetWindowText (handle, buffer); |
| /* |
| * Bug in Windows. For some reason, the HBRUSH that |
| * is returned from WM_CTRLCOLOR is misaligned when |
| * the label uses it to draw. If the brush is a solid |
| * color, this does not matter. However, if the brush |
| * contains an image, the image is misaligned. The |
| * fix is to draw the background in WM_ERASEBKGND. |
| */ |
| if (OS.COMCTL32_MAJOR < 6) { |
| if (findImageControl () != null) OS.InvalidateRect (handle, null, true); |
| } |
| } |
| |
| int widgetExtStyle () { |
| int bits = super.widgetExtStyle () & ~OS.WS_EX_CLIENTEDGE; |
| if ((style & SWT.BORDER) != 0) return bits | OS.WS_EX_STATICEDGE; |
| return bits; |
| } |
| |
| int widgetStyle () { |
| int bits = super.widgetStyle () | OS.SS_NOTIFY; |
| if ((style & SWT.SEPARATOR) != 0) return bits | OS.SS_OWNERDRAW; |
| if (OS.WIN32_VERSION >= OS.VERSION (5, 0)) { |
| if ((style & SWT.WRAP) != 0) bits |= OS.SS_EDITCONTROL; |
| } |
| if ((style & SWT.CENTER) != 0) return bits | OS.SS_CENTER; |
| if ((style & SWT.RIGHT) != 0) return bits | OS.SS_RIGHT; |
| if ((style & SWT.WRAP) != 0) return bits | OS.SS_LEFT; |
| return bits | OS.SS_LEFTNOWORDWRAP; |
| } |
| |
| TCHAR windowClass () { |
| return LabelClass; |
| } |
| |
| int /*long*/ windowProc () { |
| return LabelProc; |
| } |
| |
| LRESULT WM_ERASEBKGND (int /*long*/ wParam, int /*long*/ lParam) { |
| LRESULT result = super.WM_ERASEBKGND (wParam, lParam); |
| if (result != null) return result; |
| int bits = OS.GetWindowLong (handle, OS.GWL_STYLE); |
| if ((bits & OS.SS_OWNERDRAW) == OS.SS_OWNERDRAW) { |
| return LRESULT.ONE; |
| } |
| /* |
| * Bug in Windows. For some reason, the HBRUSH that |
| * is returned from WM_CTRLCOLOR is misaligned when |
| * the label uses it to draw. If the brush is a solid |
| * color, this does not matter. However, if the brush |
| * contains an image, the image is misaligned. The |
| * fix is to draw the background in WM_ERASEBKGND. |
| */ |
| if (OS.COMCTL32_MAJOR < 6) { |
| if (findImageControl () != null) { |
| drawBackground (wParam); |
| return LRESULT.ONE; |
| } |
| } |
| return result; |
| } |
| |
| LRESULT WM_SIZE (int /*long*/ wParam, int /*long*/ lParam) { |
| LRESULT result = super.WM_SIZE (wParam, lParam); |
| if (isDisposed ()) return result; |
| if ((style & SWT.SEPARATOR) != 0) { |
| OS.InvalidateRect (handle, null, true); |
| return result; |
| } |
| int bits = OS.GetWindowLong (handle, OS.GWL_STYLE); |
| if ((bits & OS.SS_OWNERDRAW) == OS.SS_OWNERDRAW) { |
| OS.InvalidateRect (handle, null, true); |
| return result; |
| } |
| /* |
| * Bug in Windows. For some reason, a label with |
| * style SS_LEFT, SS_CENTER or SS_RIGHT does not |
| * redraw the text in the new position when resized. |
| * Note that SS_LEFTNOWORDWRAP does not have the |
| * problem. The fix is to force the redraw. |
| */ |
| if ((bits & OS.SS_LEFTNOWORDWRAP) != OS.SS_LEFTNOWORDWRAP) { |
| OS.InvalidateRect (handle, null, true); |
| return result; |
| } |
| return result; |
| } |
| |
| LRESULT WM_UPDATEUISTATE (int /*long*/ wParam, int /*long*/ lParam) { |
| LRESULT result = super.WM_UPDATEUISTATE (wParam, lParam); |
| if (result != null) return result; |
| /* |
| * Feature in Windows. When WM_UPDATEUISTATE is sent to |
| * a static control, it sends WM_CTLCOLORSTATIC to get the |
| * foreground and background. If any drawing happens in |
| * WM_CTLCOLORSTATIC, it overwrites the contents of the control. |
| * The fix is draw the static without drawing the background |
| * and avoid the static window proc. |
| */ |
| boolean redraw = findImageControl () != null; |
| if (!redraw) { |
| if ((state & THEME_BACKGROUND) != 0) { |
| if (OS.COMCTL32_MAJOR >= 6 && OS.IsAppThemed ()) { |
| redraw = findThemeControl () != null; |
| } |
| } |
| } |
| if (redraw) { |
| OS.InvalidateRect (handle, null, false); |
| int /*long*/ code = OS.DefWindowProc (handle, OS.WM_UPDATEUISTATE, wParam, lParam); |
| return new LRESULT (code); |
| } |
| return result; |
| } |
| |
| LRESULT wmBufferedPaint (int /*long*/ hWnd, int /*long*/ wParam, int /*long*/ lParam) { |
| // Label widgets are owner-drawn, so this is a no-op |
| return null; // return null so that wmDrawChild gets invoked |
| } |
| |
| LRESULT wmColorChild (int /*long*/ wParam, int /*long*/ lParam) { |
| /* |
| * Bug in Windows. For some reason, the HBRUSH that |
| * is returned from WM_CTRLCOLOR is misaligned when |
| * the label uses it to draw. If the brush is a solid |
| * color, this does not matter. However, if the brush |
| * contains an image, the image is misaligned. The |
| * fix is to draw the background in WM_ERASEBKGND. |
| */ |
| LRESULT result = super.wmColorChild (wParam, lParam); |
| if (OS.COMCTL32_MAJOR < 6) { |
| int bits = OS.GetWindowLong (handle, OS.GWL_STYLE); |
| if ((bits & OS.SS_OWNERDRAW) != OS.SS_OWNERDRAW) { |
| if (findImageControl () != null) { |
| OS.SetBkMode (wParam, OS.TRANSPARENT); |
| return new LRESULT (OS.GetStockObject (OS.NULL_BRUSH)); |
| } |
| } |
| } |
| return result; |
| } |
| |
| LRESULT WM_PAINT (int /*long*/ wParam, int /*long*/ lParam) { |
| if (OS.IsWinCE) { |
| boolean drawImage = image != null; |
| boolean drawSeparator = (style & SWT.SEPARATOR) != 0 && (style & SWT.SHADOW_NONE) == 0; |
| if (drawImage || drawSeparator) { |
| LRESULT result = null; |
| PAINTSTRUCT ps = new PAINTSTRUCT (); |
| GCData data = new GCData (); |
| data.ps = ps; |
| data.hwnd = handle; |
| GC gc = new_GC (data); |
| if (gc != null) { |
| drawBackground (gc.handle); |
| RECT clientRect = new RECT(); |
| OS.GetClientRect (handle, clientRect); |
| if (drawSeparator) { |
| RECT rect = new RECT (); |
| int lineWidth = OS.GetSystemMetrics (OS.SM_CXBORDER); |
| int flags = (style & SWT.SHADOW_IN) != 0 ? OS.EDGE_SUNKEN : OS.EDGE_ETCHED; |
| if ((style & SWT.HORIZONTAL) != 0) { |
| int bottom = clientRect.top + Math.max (lineWidth * 2, (clientRect.bottom - clientRect.top) / 2); |
| OS.SetRect (rect, clientRect.left, clientRect.top, clientRect.right, bottom); |
| OS.DrawEdge (gc.handle, rect, flags, OS.BF_BOTTOM); |
| } else { |
| int right = clientRect.left + Math.max (lineWidth * 2, (clientRect.right - clientRect.left) / 2); |
| OS.SetRect (rect, clientRect.left, clientRect.top, right, clientRect.bottom); |
| OS.DrawEdge (gc.handle, rect, flags, OS.BF_RIGHT); |
| } |
| result = LRESULT.ONE; |
| } |
| if (drawImage) { |
| Rectangle imageBounds = image.getBounds (); |
| int x = 0; |
| if ((style & SWT.CENTER) != 0) { |
| x = Math.max (0, (clientRect.right - imageBounds.width) / 2); |
| } else { |
| if ((style & SWT.RIGHT) != 0) { |
| x = Math.max (0, (clientRect.right - imageBounds.width)); |
| } |
| } |
| gc.drawImage (image, x, Math.max (0, (clientRect.bottom - imageBounds.height) / 2)); |
| result = LRESULT.ONE; |
| } |
| int width = ps.right - ps.left; |
| int height = ps.bottom - ps.top; |
| if (width != 0 && height != 0) { |
| Event event = new Event (); |
| event.gc = gc; |
| event.x = ps.left; |
| event.y = ps.top; |
| event.width = width; |
| event.height = height; |
| sendEvent (SWT.Paint, event); |
| // widget could be disposed at this point |
| event.gc = null; |
| } |
| gc.dispose (); |
| } |
| return result; |
| } |
| } |
| return super.WM_PAINT(wParam, lParam); |
| } |
| |
| LRESULT wmDrawChild (int /*long*/ wParam, int /*long*/ lParam) { |
| DRAWITEMSTRUCT struct = new DRAWITEMSTRUCT (); |
| OS.MoveMemory (struct, lParam, DRAWITEMSTRUCT.sizeof); |
| drawBackground (struct.hDC); |
| if ((style & SWT.SEPARATOR) != 0) { |
| if ((style & SWT.SHADOW_NONE) != 0) return null; |
| RECT rect = new RECT (); |
| int lineWidth = OS.GetSystemMetrics (OS.SM_CXBORDER); |
| int flags = (style & SWT.SHADOW_IN) != 0 ? OS.EDGE_SUNKEN : OS.EDGE_ETCHED; |
| if ((style & SWT.HORIZONTAL) != 0) { |
| int bottom = struct.top + Math.max (lineWidth * 2, (struct.bottom - struct.top) / 2); |
| OS.SetRect (rect, struct.left, struct.top, struct.right, bottom); |
| OS.DrawEdge (struct.hDC, rect, flags, OS.BF_BOTTOM); |
| } else { |
| int right = struct.left + Math.max (lineWidth * 2, (struct.right - struct.left) / 2); |
| OS.SetRect (rect, struct.left, struct.top, right, struct.bottom); |
| OS.DrawEdge (struct.hDC, rect, flags, OS.BF_RIGHT); |
| } |
| } else { |
| int width = struct.right - struct.left; |
| int height = struct.bottom - struct.top; |
| if (width != 0 && height != 0) { |
| boolean drawImage = image != null; |
| boolean drawText = text.length () != 0 && (image == null || IMAGE_AND_TEXT); |
| int margin = drawText && drawImage ? MARGIN : 0; |
| int imageWidth = 0, imageHeight = 0; |
| if (drawImage) { |
| Rectangle rect = image.getBounds (); |
| imageWidth = rect.width; |
| imageHeight = rect.height; |
| } |
| RECT rect = null; |
| TCHAR buffer = null; |
| int textWidth = 0, textHeight = 0, flags = 0; |
| if (drawText) { |
| rect = new RECT (); |
| flags = OS.DT_CALCRECT | OS.DT_EDITCONTROL | OS.DT_EXPANDTABS; |
| if ((style & SWT.LEFT) != 0) flags |= OS.DT_LEFT; |
| if ((style & SWT.CENTER) != 0) flags |= OS.DT_CENTER; |
| if ((style & SWT.RIGHT) != 0) flags |= OS.DT_RIGHT; |
| if ((style & SWT.WRAP) != 0) { |
| flags |= OS.DT_WORDBREAK; |
| rect.right = Math.max (0, width - imageWidth - margin); |
| } |
| buffer = new TCHAR (getCodePage (), text, true); |
| OS.DrawText (struct.hDC, buffer, -1, rect, flags); |
| textWidth = rect.right - rect.left; |
| textHeight = rect.bottom - rect.top; |
| } |
| int x = 0; |
| if ((style & SWT.CENTER) != 0) { |
| x = Math.max (0, (width - imageWidth - textWidth - margin) / 2); |
| } else { |
| if ((style & SWT.RIGHT) != 0) { |
| x = width - imageWidth - textWidth - margin; |
| } |
| } |
| if (drawImage) { |
| GCData data = new GCData(); |
| data.device = display; |
| GC gc = GC.win32_new (struct.hDC, data); |
| Image image = getEnabled () ? this.image : new Image (display, this.image, SWT.IMAGE_DISABLE); |
| gc.drawImage (image, x, Math.max (0, (height - imageHeight) / 2)); |
| if (image != this.image) image.dispose (); |
| gc.dispose (); |
| x += imageWidth + margin; |
| } |
| if (drawText) { |
| flags &= ~OS.DT_CALCRECT; |
| rect.left = x; |
| rect.right += rect.left; |
| rect.top = Math.max (0, (height - textHeight) / 2); |
| rect.bottom += rect.top; |
| if ((style & SWT.TRIM_FILL) == 0) { |
| OS.DrawText (struct.hDC, buffer, -1, rect, flags); |
| } else { |
| int /*long*/ hFont = OS.SendMessage(this.handle, OS.WM_GETFONT, 0, 0); |
| int color = 0x000000; |
| drawBufferredText(struct.hDC, buffer, rect, hFont, color, flags); |
| } |
| } |
| } |
| } |
| return null; |
| } |
| |
| } |