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Diffstat (limited to 'bundles/org.eclipse.swt/Eclipse SWT/win32/org/eclipse/swt/widgets/Scrollable.java')
| -rwxr-xr-x | bundles/org.eclipse.swt/Eclipse SWT/win32/org/eclipse/swt/widgets/Scrollable.java | 495 |
1 files changed, 0 insertions, 495 deletions
diff --git a/bundles/org.eclipse.swt/Eclipse SWT/win32/org/eclipse/swt/widgets/Scrollable.java b/bundles/org.eclipse.swt/Eclipse SWT/win32/org/eclipse/swt/widgets/Scrollable.java deleted file mode 100755 index c4ac04add5..0000000000 --- a/bundles/org.eclipse.swt/Eclipse SWT/win32/org/eclipse/swt/widgets/Scrollable.java +++ /dev/null @@ -1,495 +0,0 @@ -/******************************************************************************* - * Copyright (c) 2000, 2009 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.*; - -/** - * This class is the abstract superclass of all classes which - * represent controls that have standard scroll bars. - * <dl> - * <dt><b>Styles:</b></dt> - * <dd>H_SCROLL, V_SCROLL</dd> - * <dt><b>Events:</b> - * <dd>(none)</dd> - * </dl> - * <p> - * IMPORTANT: This class is intended to be subclassed <em>only</em> - * within the SWT implementation. - * </p> - * - * @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 abstract class Scrollable extends Control { - ScrollBar horizontalBar, verticalBar; - -/** - * Prevents uninitialized instances from being created outside the package. - */ -Scrollable () { -} - -/** - * 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#H_SCROLL - * @see SWT#V_SCROLL - * @see Widget#checkSubclass - * @see Widget#getStyle - */ -public Scrollable (Composite parent, int style) { - super (parent, style); -} - -int /*long*/ callWindowProc (int /*long*/ hwnd, int msg, int /*long*/ wParam, int /*long*/ lParam) { - if (handle == 0) return 0; - return OS.DefWindowProc (hwnd, msg, wParam, lParam); -} - -/** - * Given a desired <em>client area</em> for the receiver - * (as described by the arguments), returns the bounding - * rectangle which would be required to produce that client - * area. - * <p> - * In other words, it returns a rectangle such that, if the - * receiver's bounds were set to that rectangle, the area - * of the receiver which is capable of displaying data - * (that is, not covered by the "trimmings") would be the - * rectangle described by the arguments (relative to the - * receiver's parent). - * </p> - * - * @param x the desired x coordinate of the client area - * @param y the desired y coordinate of the client area - * @param width the desired width of the client area - * @param height the desired height of the client area - * @return the required bounds to produce the given client area - * - * @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> - * - * @see #getClientArea - */ -public Rectangle computeTrim (int x, int y, int width, int height) { - checkWidget (); - int /*long*/ scrolledHandle = scrolledHandle (); - RECT rect = new RECT (); - OS.SetRect (rect, x, y, x + width, y + height); - int bits1 = OS.GetWindowLong (scrolledHandle, OS.GWL_STYLE); - int bits2 = OS.GetWindowLong (scrolledHandle, OS.GWL_EXSTYLE); - OS.AdjustWindowRectEx (rect, bits1, false, bits2); - if (horizontalBar != null) rect.bottom += OS.GetSystemMetrics (OS.SM_CYHSCROLL); - if (verticalBar != null) rect.right += OS.GetSystemMetrics (OS.SM_CXVSCROLL); - int nWidth = rect.right - rect.left, nHeight = rect.bottom - rect.top; - return new Rectangle (rect.left, rect.top, nWidth, nHeight); -} - -ScrollBar createScrollBar (int type) { - ScrollBar bar = new ScrollBar (this, type); - if ((state & CANVAS) != 0) { - bar.setMaximum (100); - bar.setThumb (10); - } - return bar; -} - -void createWidget () { - super.createWidget (); - if ((style & SWT.H_SCROLL) != 0) horizontalBar = createScrollBar (SWT.H_SCROLL); - if ((style & SWT.V_SCROLL) != 0) verticalBar = createScrollBar (SWT.V_SCROLL); -} - -void destroyScrollBar (int type) { - int /*long*/ hwnd = scrolledHandle (); - int bits = OS.GetWindowLong (hwnd, OS.GWL_STYLE); - if ((type & SWT.HORIZONTAL) != 0) { - style &= ~SWT.H_SCROLL; - bits &= ~OS.WS_HSCROLL; - } - if ((type & SWT.VERTICAL) != 0) { - style &= ~SWT.V_SCROLL; - bits &= ~OS.WS_VSCROLL; - } - OS.SetWindowLong (hwnd, OS.GWL_STYLE, bits); -} - -/** - * Returns a rectangle which describes the area of the - * receiver which is capable of displaying data (that is, - * not covered by the "trimmings"). - * - * @return the client area - * - * @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> - * - * @see #computeTrim - */ -public Rectangle getClientArea () { - checkWidget (); - forceResize (); - RECT rect = new RECT (); - int /*long*/ scrolledHandle = scrolledHandle (); - OS.GetClientRect (scrolledHandle, rect); - int x = rect.left, y = rect.top; - int width = rect.right - rect.left; - int height = rect.bottom - rect.top; - if (scrolledHandle != handle) { - OS.GetClientRect (handle, rect); - OS.MapWindowPoints(handle, scrolledHandle, rect, 2); - x = -rect.left; - y = -rect.top; - } - return new Rectangle (x, y, width, height); -} - -/** - * Returns the receiver's horizontal scroll bar if it has - * one, and null if it does not. - * - * @return the horizontal scroll bar (or null) - * - * @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 ScrollBar getHorizontalBar () { - checkWidget (); - return horizontalBar; -} - -/** - * Returns the receiver's vertical scroll bar if it has - * one, and null if it does not. - * - * @return the vertical scroll bar (or null) - * - * @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 ScrollBar getVerticalBar () { - checkWidget (); - return verticalBar; -} - -void releaseChildren (boolean destroy) { - if (horizontalBar != null) { - horizontalBar.release (false); - horizontalBar = null; - } - if (verticalBar != null) { - verticalBar.release (false); - verticalBar = null; - } - super.releaseChildren (destroy); -} - -int /*long*/ scrolledHandle () { - return handle; -} - -int widgetExtStyle () { - return super.widgetExtStyle (); - /* - * This code is intentionally commented. In future, - * we may wish to support different standard Windows - * edge styles. The issue here is that not all of - * these styles are available on the other platforms - * this would need to be a hint. - */ -// if ((style & SWT.BORDER) != 0) return OS.WS_EX_CLIENTEDGE; -// if ((style & SWT.SHADOW_IN) != 0) return OS.WS_EX_STATICEDGE; -// return super.widgetExtStyle (); -} - -int widgetStyle () { - int bits = super.widgetStyle () | OS.WS_TABSTOP; - if ((style & SWT.H_SCROLL) != 0) bits |= OS.WS_HSCROLL; - if ((style & SWT.V_SCROLL) != 0) bits |= OS.WS_VSCROLL; - return bits; -} - -TCHAR windowClass () { - return display.windowClass; -} - -int /*long*/ windowProc () { - return display.windowProc; -} - -LRESULT WM_HSCROLL (int /*long*/ wParam, int /*long*/ lParam) { - LRESULT result = super.WM_HSCROLL (wParam, lParam); - if (result != null) return result; - - /* - * Bug on WinCE. lParam should be NULL when the message is not sent - * by a scroll bar control, but it contains the handle to the window. - * When the message is sent by a scroll bar control, it correctly - * contains the handle to the scroll bar. The fix is to check for - * both. - */ - if (horizontalBar != null && (lParam == 0 || lParam == handle)) { - return wmScroll (horizontalBar, (state & CANVAS) != 0, handle, OS.WM_HSCROLL, wParam, lParam); - } - return result; -} - -LRESULT WM_MOUSEWHEEL (int /*long*/ wParam, int /*long*/ lParam) { - return wmScrollWheel ((state & CANVAS) != 0, wParam, lParam); -} - -LRESULT WM_SIZE (int /*long*/ wParam, int /*long*/ lParam) { - int /*long*/ code = callWindowProc (handle, OS.WM_SIZE, wParam, lParam); - super.WM_SIZE (wParam, lParam); - // widget may be disposed at this point - if (code == 0) return LRESULT.ZERO; - return new LRESULT (code); -} - -LRESULT WM_VSCROLL (int /*long*/ wParam, int /*long*/ lParam) { - LRESULT result = super.WM_VSCROLL (wParam, lParam); - if (result != null) return result; - /* - * Bug on WinCE. lParam should be NULL when the message is not sent - * by a scroll bar control, but it contains the handle to the window. - * When the message is sent by a scroll bar control, it correctly - * contains the handle to the scroll bar. The fix is to check for - * both. - */ - if (verticalBar != null && (lParam == 0 || lParam == handle)) { - return wmScroll (verticalBar, (state & CANVAS) != 0, handle, OS.WM_VSCROLL, wParam, lParam); - } - return result; -} - -LRESULT wmNCPaint (int /*long*/ hwnd, int /*long*/ wParam, int /*long*/ lParam) { - LRESULT result = super.wmNCPaint (hwnd, wParam, lParam); - if (result != null) return result; - /* - * Bug in Windows. On XP only (not Vista), Windows sometimes - * does not redraw the bottom right corner of a window that - * has scroll bars, causing pixel corruption. The fix is to - * always draw the corner. - */ - if (OS.COMCTL32_MAJOR >= 6 && OS.IsAppThemed ()) { - if (!OS.IsWinCE && OS.WIN32_VERSION < OS.VERSION (6, 0)) { - int bits1 = OS.GetWindowLong (hwnd, OS.GWL_STYLE); - if ((bits1 & (OS.WS_HSCROLL | OS.WS_VSCROLL)) != 0) { - RECT windowRect = new RECT (); - OS.GetWindowRect (hwnd, windowRect); - RECT trimRect = new RECT (); - int bits2 = OS.GetWindowLong (hwnd, OS.GWL_EXSTYLE); - OS.AdjustWindowRectEx (trimRect, bits1, false, bits2); - boolean hVisible = false, vVisible = false; - SCROLLBARINFO psbi = new SCROLLBARINFO (); - psbi.cbSize = SCROLLBARINFO.sizeof; - if (OS.GetScrollBarInfo (hwnd, OS.OBJID_HSCROLL, psbi)) { - hVisible = (psbi.rgstate [0] & OS.STATE_SYSTEM_INVISIBLE) == 0; - } - if (OS.GetScrollBarInfo (hwnd, OS.OBJID_VSCROLL, psbi)) { - vVisible = (psbi.rgstate [0] & OS.STATE_SYSTEM_INVISIBLE) == 0; - } - RECT cornerRect = new RECT (); - cornerRect.right = windowRect.right - windowRect.left - trimRect.right; - cornerRect.bottom = windowRect.bottom - windowRect.top - trimRect.bottom; - cornerRect.left = cornerRect.right - (hVisible ? OS.GetSystemMetrics (OS.SM_CXVSCROLL) : 0); - cornerRect.top = cornerRect.bottom - (vVisible ? OS.GetSystemMetrics (OS.SM_CYHSCROLL) : 0); - if (cornerRect.left != cornerRect.right && cornerRect.top != cornerRect.bottom) { - int /*long*/ hDC = OS.GetWindowDC (hwnd); - OS.FillRect (hDC, cornerRect, OS.COLOR_BTNFACE + 1); - Decorations shell = menuShell (); - if ((shell.style & SWT.RESIZE) != 0) { - int /*long*/ hwndScroll = shell.scrolledHandle (); - boolean drawGripper = hwnd == hwndScroll; - if (!drawGripper) { - RECT shellRect = new RECT (); - OS.GetClientRect (hwndScroll, shellRect); - OS.MapWindowPoints (hwndScroll, 0, shellRect, 2); - drawGripper = shellRect.right == windowRect.right && shellRect.bottom == windowRect.bottom; - } - if (drawGripper) { - OS.DrawThemeBackground (display.hScrollBarTheme(), hDC, OS.SBP_SIZEBOX, 0, cornerRect, null); - } - } - OS.ReleaseDC (hwnd, hDC); - } - } - } - } - return result; -} - -LRESULT wmScrollWheel (boolean update, int /*long*/ wParam, int /*long*/ lParam) { - int scrollRemainder = display.scrollRemainder; - LRESULT result = super.WM_MOUSEWHEEL (wParam, lParam); - if (result != null) return result; - /* - * Translate WM_MOUSEWHEEL to WM_VSCROLL or WM_HSCROLL. - */ - if (update) { - if ((wParam & (OS.MK_SHIFT | OS.MK_CONTROL)) != 0) return result; - boolean vertical = verticalBar != null && verticalBar.getEnabled (); - boolean horizontal = horizontalBar != null && horizontalBar.getEnabled (); - int msg = vertical ? OS.WM_VSCROLL : horizontal ? OS.WM_HSCROLL : 0; - if (msg == 0) return result; - int [] linesToScroll = new int [1]; - OS.SystemParametersInfo (OS.SPI_GETWHEELSCROLLLINES, 0, linesToScroll, 0); - int delta = OS.GET_WHEEL_DELTA_WPARAM (wParam); - boolean pageScroll = linesToScroll [0] == OS.WHEEL_PAGESCROLL; - if (!OS.IsWinCE && OS.WIN32_VERSION >= OS.VERSION (5, 1)) { - ScrollBar bar = vertical ? verticalBar : horizontalBar; - SCROLLINFO info = new SCROLLINFO (); - info.cbSize = SCROLLINFO.sizeof; - info.fMask = OS.SIF_POS; - OS.GetScrollInfo (handle, bar.scrollBarType (), info); - if (vertical && !pageScroll) delta *= linesToScroll [0]; - int increment = pageScroll ? bar.getPageIncrement () : bar.getIncrement (); - info.nPos -= increment * delta / OS.WHEEL_DELTA; - OS.SetScrollInfo (handle, bar.scrollBarType (), info, true); - OS.SendMessage (handle, msg, OS.SB_THUMBPOSITION, 0); - } else { - int code = 0; - if (pageScroll) { - code = delta < 0 ? OS.SB_PAGEDOWN : OS.SB_PAGEUP; - } else { - code = delta < 0 ? OS.SB_LINEDOWN : OS.SB_LINEUP; - if (msg == OS.WM_VSCROLL) delta *= linesToScroll [0]; - } - /* Check if the delta and the remainder have the same direction (sign) */ - if ((delta ^ scrollRemainder) >= 0) delta += scrollRemainder; - int count = Math.abs (delta) / OS.WHEEL_DELTA; - for (int i=0; i<count; i++) { - OS.SendMessage (handle, msg, code, 0); - } - } - return LRESULT.ZERO; - } - - /* - * When the native widget scrolls inside WM_MOUSEWHEEL, it - * may or may not send a WM_VSCROLL or WM_HSCROLL to do the - * actual scrolling. This depends on the implementation of - * each native widget. In order to ensure that application - * code is notified when the scroll bar moves, compare the - * scroll bar position before and after the WM_MOUSEWHEEL. - * If the native control sends a WM_VSCROLL or WM_HSCROLL, - * then the application has already been notified. If not - * explicitly send the event. - */ - int vPosition = verticalBar == null ? 0 : verticalBar.getSelection (); - int hPosition = horizontalBar == null ? 0 : horizontalBar.getSelection (); - int /*long*/ code = callWindowProc (handle, OS.WM_MOUSEWHEEL, wParam, lParam); - if (verticalBar != null) { - int position = verticalBar.getSelection (); - if (position != vPosition) { - Event event = new Event (); - event.detail = position < vPosition ? SWT.PAGE_UP : SWT.PAGE_DOWN; - verticalBar.sendEvent (SWT.Selection, event); - } - } - if (horizontalBar != null) { - int position = horizontalBar.getSelection (); - if (position != hPosition) { - Event event = new Event (); - event.detail = position < hPosition ? SWT.PAGE_UP : SWT.PAGE_DOWN; - horizontalBar.sendEvent (SWT.Selection, event); - } - } - return new LRESULT (code); -} - -LRESULT wmScroll (ScrollBar bar, boolean update, int /*long*/ hwnd, int msg, int /*long*/ wParam, int /*long*/ lParam) { - LRESULT result = null; - if (update) { - int type = msg == OS.WM_HSCROLL ? OS.SB_HORZ : OS.SB_VERT; - SCROLLINFO info = new SCROLLINFO (); - info.cbSize = SCROLLINFO.sizeof; - info.fMask = OS.SIF_TRACKPOS | OS.SIF_POS | OS.SIF_RANGE; - OS.GetScrollInfo (hwnd, type, info); - info.fMask = OS.SIF_POS; - int code = OS.LOWORD (wParam); - switch (code) { - case OS.SB_ENDSCROLL: return null; - case OS.SB_THUMBPOSITION: - case OS.SB_THUMBTRACK: - /* - * Note: On WinCE, the value in SB_THUMBPOSITION is relative to nMin. - * Same for SB_THUMBPOSITION 'except' for the very first thumb track - * message which has the actual value of nMin. This is a problem when - * nMin is not zero. - */ - info.nPos = info.nTrackPos; - break; - case OS.SB_TOP: - info.nPos = info.nMin; - break; - case OS.SB_BOTTOM: - info.nPos = info.nMax; - break; - case OS.SB_LINEDOWN: - info.nPos += bar.getIncrement (); - break; - case OS.SB_LINEUP: - int increment = bar.getIncrement (); - info.nPos = Math.max (info.nMin, info.nPos - increment); - break; - case OS.SB_PAGEDOWN: - info.nPos += bar.getPageIncrement (); - break; - case OS.SB_PAGEUP: - int pageIncrement = bar.getPageIncrement (); - info.nPos = Math.max (info.nMin, info.nPos - pageIncrement); - break; - } - OS.SetScrollInfo (hwnd, type, info, true); - } else { - int /*long*/ code = callWindowProc (hwnd, msg, wParam, lParam); - result = code == 0 ? LRESULT.ZERO : new LRESULT (code); - } - bar.wmScrollChild (wParam, lParam); - return result; -} - -} |