diff options
Diffstat (limited to 'bundles/org.eclipse.swt/Eclipse SWT/win32/org/eclipse/swt/graphics/Device.java')
| -rwxr-xr-x | bundles/org.eclipse.swt/Eclipse SWT/win32/org/eclipse/swt/graphics/Device.java | 972 |
1 files changed, 0 insertions, 972 deletions
diff --git a/bundles/org.eclipse.swt/Eclipse SWT/win32/org/eclipse/swt/graphics/Device.java b/bundles/org.eclipse.swt/Eclipse SWT/win32/org/eclipse/swt/graphics/Device.java deleted file mode 100755 index 7745d9088a..0000000000 --- a/bundles/org.eclipse.swt/Eclipse SWT/win32/org/eclipse/swt/graphics/Device.java +++ /dev/null @@ -1,972 +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.graphics; - - -import org.eclipse.swt.internal.*; -import org.eclipse.swt.internal.gdip.*; -import org.eclipse.swt.internal.win32.*; -import org.eclipse.swt.*; - -/** - * This class is the abstract superclass of all device objects, - * such as the Display device and the Printer device. Devices - * can have a graphics context (GC) created for them, and they - * can be drawn on by sending messages to the associated GC. - * - * @see <a href="http://www.eclipse.org/swt/">Sample code and further information</a> - */ -public abstract class Device implements Drawable { - - /* Debugging */ - public static boolean DEBUG; - boolean debug = DEBUG; - boolean tracking = DEBUG; - Error [] errors; - Object [] objects; - Object trackingLock; - - /** - * Palette - * (Warning: This field is platform dependent) - * <p> - * <b>IMPORTANT:</b> This field is <em>not</em> part of the SWT - * public API. It is marked public only so that it can be shared - * within the packages provided by SWT. It is not available on all - * platforms and should never be accessed from application code. - * </p> - */ - public int /*long*/ hPalette = 0; - int [] colorRefCount; - - /* System Font */ - Font systemFont; - - /* Font Enumeration */ - int nFonts = 256; - LOGFONT [] logFonts; - TEXTMETRIC metrics; - int[] pixels; - - /* Scripts */ - int /*long*/ [] scripts; - - /* Advanced Graphics */ - int /*long*/ [] gdipToken; - int /*long*/ fontCollection; - String[] loadedFonts; - - boolean disposed; - - /* - * TEMPORARY CODE. When a graphics object is - * created and the device parameter is null, - * the current Display is used. This presents - * a problem because SWT graphics does not - * reference classes in SWT widgets. The correct - * fix is to remove this feature. Unfortunately, - * too many application programs rely on this - * feature. - */ - protected static Device CurrentDevice; - protected static Runnable DeviceFinder; - static { - try { - Class.forName ("org.eclipse.swt.widgets.Display"); //$NON-NLS-1$ - } catch (ClassNotFoundException e) {} - } - -/* -* TEMPORARY CODE. -*/ -static synchronized Device getDevice () { - if (DeviceFinder != null) DeviceFinder.run(); - Device device = CurrentDevice; - CurrentDevice = null; - return device; -} - -/** - * Constructs a new instance of this class. - * <p> - * You must dispose the device when it is no longer required. - * </p> - * - * @see #create - * @see #init - * - * @since 3.1 - */ -public Device() { - this(null); -} - -/** - * Constructs a new instance of this class. - * <p> - * You must dispose the device when it is no longer required. - * </p> - * - * @param data the DeviceData which describes the receiver - * - * @see #create - * @see #init - * @see DeviceData - */ -public Device(DeviceData data) { - synchronized (Device.class) { - if (data != null) { - debug = data.debug; - tracking = data.tracking; - } - if (tracking) { - errors = new Error [128]; - objects = new Object [128]; - trackingLock = new Object (); - } - create (data); - init (); - } -} - -void addFont (String font) { - if (loadedFonts == null) loadedFonts = new String [4]; - int length = loadedFonts.length; - for (int i=0; i<length; i++) { - if (font.equals(loadedFonts [i])) return; - } - int index = 0; - while (index < length) { - if (loadedFonts [index] == null) break; - index++; - } - if (index == length) { - String [] temp = new String [length + 4]; - System.arraycopy (loadedFonts, 0, temp, 0, length); - loadedFonts = temp; - } - loadedFonts [index] = font; -} - -/** - * Throws an <code>SWTException</code> if the receiver can not - * be accessed by the caller. This may include both checks on - * the state of the receiver and more generally on the entire - * execution context. This method <em>should</em> be called by - * device implementors to enforce the standard SWT invariants. - * <p> - * Currently, it is an error to invoke any method (other than - * <code>isDisposed()</code> and <code>dispose()</code>) on a - * device that has had its <code>dispose()</code> method called. - * </p><p> - * In future releases of SWT, there may be more or fewer error - * checks and exceptions may be thrown for different reasons. - * <p> - * - * @exception SWTException <ul> - * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> - * </ul> - */ -protected void checkDevice () { - if (disposed) SWT.error(SWT.ERROR_DEVICE_DISPOSED); -} - -void checkGDIP() { - if (gdipToken != null) return; - int oldErrorMode = 0; - if (!OS.IsWinCE) oldErrorMode = OS.SetErrorMode (OS.SEM_FAILCRITICALERRORS); - try { - int /*long*/ [] token = new int /*long*/ [1]; - GdiplusStartupInput input = new GdiplusStartupInput (); - input.GdiplusVersion = 1; - if (Gdip.GdiplusStartup (token, input, 0) == 0) { - gdipToken = token; - if (loadedFonts != null) { - fontCollection = Gdip.PrivateFontCollection_new(); - if (fontCollection == 0) SWT.error(SWT.ERROR_NO_HANDLES); - for (int i = 0; i < loadedFonts.length; i++) { - String path = loadedFonts[i]; - if (path == null) break; - int length = path.length(); - char [] buffer = new char [length + 1]; - path.getChars(0, length, buffer, 0); - Gdip.PrivateFontCollection_AddFontFile(fontCollection, buffer); - } - loadedFonts = null; - } - } - } catch (Throwable t) { - SWT.error (SWT.ERROR_NO_GRAPHICS_LIBRARY, t, " [GDI+ is required]"); //$NON-NLS-1$ - } finally { - if (!OS.IsWinCE) OS.SetErrorMode (oldErrorMode); - } -} - -/** - * Creates the device in the operating system. If the device - * does not have a handle, this method may do nothing depending - * on the device. - * <p> - * This method is called before <code>init</code>. - * </p><p> - * Subclasses are supposed to reimplement this method and not - * call the <code>super</code> implementation. - * </p> - * - * @param data the DeviceData which describes the receiver - * - * @see #init - */ -protected void create (DeviceData data) { -} - -int computePixels(float height) { - int /*long*/ hDC = internal_new_GC (null); - int pixels = -(int)(0.5f + (height * OS.GetDeviceCaps(hDC, OS.LOGPIXELSY) / 72f)); - internal_dispose_GC (hDC, null); - return pixels; -} - -float computePoints(LOGFONT logFont, int /*long*/ hFont) { - int /*long*/ hDC = internal_new_GC (null); - int logPixelsY = OS.GetDeviceCaps(hDC, OS.LOGPIXELSY); - int pixels = 0; - if (logFont.lfHeight > 0) { - /* - * Feature in Windows. If the lfHeight of the LOGFONT structure - * is positive, the lfHeight measures the height of the entire - * cell, including internal leading, in logical units. Since the - * height of a font in points does not include the internal leading, - * we must subtract the internal leading, which requires a TEXTMETRIC. - */ - int /*long*/ oldFont = OS.SelectObject(hDC, hFont); - TEXTMETRIC lptm = OS.IsUnicode ? (TEXTMETRIC)new TEXTMETRICW() : new TEXTMETRICA(); - OS.GetTextMetrics(hDC, lptm); - OS.SelectObject(hDC, oldFont); - pixels = logFont.lfHeight - lptm.tmInternalLeading; - } else { - pixels = -logFont.lfHeight; - } - internal_dispose_GC (hDC, null); - return pixels * 72f / logPixelsY; -} - -/** - * Destroys the device in the operating system and releases - * the device's handle. If the device does not have a handle, - * this method may do nothing depending on the device. - * <p> - * This method is called after <code>release</code>. - * </p><p> - * Subclasses are supposed to reimplement this method and not - * call the <code>super</code> implementation. - * </p> - * - * @see #dispose - * @see #release - */ -protected void destroy () { -} - -/** - * Disposes of the operating system resources associated with - * the receiver. After this method has been invoked, the receiver - * will answer <code>true</code> when sent the message - * <code>isDisposed()</code>. - * - * @see #release - * @see #destroy - * @see #checkDevice - */ -public void dispose () { - synchronized (Device.class) { - if (isDisposed()) return; - checkDevice (); - release (); - destroy (); - disposed = true; - if (tracking) { - synchronized (trackingLock) { - printErrors (); - objects = null; - errors = null; - trackingLock = null; - } - } - } -} - -void dispose_Object (Object object) { - synchronized (trackingLock) { - for (int i=0; i<objects.length; i++) { - if (objects [i] == object) { - objects [i] = null; - errors [i] = null; - return; - } - } - } -} - -int /*long*/ EnumFontFamProc (int /*long*/ lpelfe, int /*long*/ lpntme, int /*long*/ FontType, int /*long*/ lParam) { - boolean isScalable = ((int)/*64*/FontType & OS.RASTER_FONTTYPE) == 0; - boolean scalable = lParam == 1; - if (isScalable == scalable) { - /* Add the log font to the list of log fonts */ - if (nFonts == logFonts.length) { - LOGFONT [] newLogFonts = new LOGFONT [logFonts.length + 128]; - System.arraycopy (logFonts, 0, newLogFonts, 0, nFonts); - logFonts = newLogFonts; - int[] newPixels = new int[newLogFonts.length]; - System.arraycopy (pixels, 0, newPixels, 0, nFonts); - pixels = newPixels; - } - LOGFONT logFont = logFonts [nFonts]; - if (logFont == null) logFont = OS.IsUnicode ? (LOGFONT)new LOGFONTW () : new LOGFONTA (); - OS.MoveMemory (logFont, lpelfe, LOGFONT.sizeof); - logFonts [nFonts] = logFont; - if (logFont.lfHeight > 0) { - /* - * Feature in Windows. If the lfHeight of the LOGFONT structure - * is positive, the lfHeight measures the height of the entire - * cell, including internal leading, in logical units. Since the - * height of a font in points does not include the internal leading, - * we must subtract the internal leading, which requires a TEXTMETRIC, - * which in turn requires font creation. - */ - OS.MoveMemory(metrics, lpntme, TEXTMETRIC.sizeof); - pixels[nFonts] = logFont.lfHeight - metrics.tmInternalLeading; - } else { - pixels[nFonts] = -logFont.lfHeight; - } - nFonts++; - } - return 1; -} - -/** - * Returns a rectangle describing the receiver's size and location. - * - * @return the bounding rectangle - * - * @exception SWTException <ul> - * <li>ERROR_DEVICE_DISPOSED - if the receiver has been disposed</li> - * </ul> - */ -public Rectangle getBounds () { - checkDevice (); - int /*long*/ hDC = internal_new_GC (null); - int width = OS.GetDeviceCaps (hDC, OS.HORZRES); - int height = OS.GetDeviceCaps (hDC, OS.VERTRES); - internal_dispose_GC (hDC, null); - return new Rectangle (0, 0, width, height); -} - -/** - * Returns a <code>DeviceData</code> based on the receiver. - * Modifications made to this <code>DeviceData</code> will not - * affect the receiver. - * - * @return a <code>DeviceData</code> containing the device's data and attributes - * - * @exception SWTException <ul> - * <li>ERROR_DEVICE_DISPOSED - if the receiver has been disposed</li> - * </ul> - * - * @see DeviceData - */ -public DeviceData getDeviceData () { - checkDevice(); - DeviceData data = new DeviceData (); - data.debug = debug; - data.tracking = tracking; - if (tracking) { - synchronized (trackingLock) { - int count = 0, length = objects.length; - for (int i=0; i<length; i++) { - if (objects [i] != null) count++; - } - int index = 0; - data.objects = new Object [count]; - data.errors = new Error [count]; - for (int i=0; i<length; i++) { - if (objects [i] != null) { - data.objects [index] = objects [i]; - data.errors [index] = errors [i]; - index++; - } - } - } - } else { - data.objects = new Object [0]; - data.errors = new Error [0]; - } - return data; -} - -/** - * Returns a rectangle which describes the area of the - * receiver which is capable of displaying data. - * - * @return the client area - * - * @exception SWTException <ul> - * <li>ERROR_DEVICE_DISPOSED - if the receiver has been disposed</li> - * </ul> - * - * @see #getBounds - */ -public Rectangle getClientArea () { - return getBounds (); -} - -/** - * Returns the bit depth of the screen, which is the number of - * bits it takes to represent the number of unique colors that - * the screen is currently capable of displaying. This number - * will typically be one of 1, 8, 15, 16, 24 or 32. - * - * @return the depth of the screen - * - * @exception SWTException <ul> - * <li>ERROR_DEVICE_DISPOSED - if the receiver has been disposed</li> - * </ul> - */ -public int getDepth () { - checkDevice (); - int /*long*/ hDC = internal_new_GC (null); - int bits = OS.GetDeviceCaps (hDC, OS.BITSPIXEL); - int planes = OS.GetDeviceCaps (hDC, OS.PLANES); - internal_dispose_GC (hDC, null); - return bits * planes; -} - -/** - * Returns a point whose x coordinate is the horizontal - * dots per inch of the display, and whose y coordinate - * is the vertical dots per inch of the display. - * - * @return the horizontal and vertical DPI - * - * @exception SWTException <ul> - * <li>ERROR_DEVICE_DISPOSED - if the receiver has been disposed</li> - * </ul> - */ -public Point getDPI () { - checkDevice (); - int /*long*/ hDC = internal_new_GC (null); - int dpiX = OS.GetDeviceCaps (hDC, OS.LOGPIXELSX); - int dpiY = OS.GetDeviceCaps (hDC, OS.LOGPIXELSY); - internal_dispose_GC (hDC, null); - return new Point (dpiX, dpiY); -} - -/** - * Returns <code>FontData</code> objects which describe - * the fonts that match the given arguments. If the - * <code>faceName</code> is null, all fonts will be returned. - * - * @param faceName the name of the font to look for, or null - * @param scalable if true only scalable fonts are returned, otherwise only non-scalable fonts are returned. - * @return the matching font data - * - * @exception SWTException <ul> - * <li>ERROR_DEVICE_DISPOSED - if the receiver has been disposed</li> - * </ul> - */ -public FontData [] getFontList (String faceName, boolean scalable) { - checkDevice (); - - /* Create the callback */ - Callback callback = new Callback (this, "EnumFontFamProc", 4); //$NON-NLS-1$ - int /*long*/ lpEnumFontFamProc = callback.getAddress (); - if (lpEnumFontFamProc == 0) SWT.error (SWT.ERROR_NO_MORE_CALLBACKS); - - /* Initialize the instance variables */ - metrics = OS.IsUnicode ? (TEXTMETRIC)new TEXTMETRICW() : new TEXTMETRICA(); - pixels = new int[nFonts]; - logFonts = new LOGFONT [nFonts]; - for (int i=0; i<logFonts.length; i++) { - logFonts [i] = OS.IsUnicode ? (LOGFONT) new LOGFONTW () : new LOGFONTA (); - } - nFonts = 0; - - /* Enumerate */ - int offset = 0; - int /*long*/ hDC = internal_new_GC (null); - if (faceName == null) { - /* The user did not specify a face name, so they want all versions of all available face names */ - OS.EnumFontFamilies (hDC, null, lpEnumFontFamProc, scalable ? 1 : 0); - - /** - * For bitmapped fonts, EnumFontFamilies only enumerates once for each font, regardless - * of how many styles are available. If the user wants bitmapped fonts, enumerate on - * each face name now. - */ - offset = nFonts; - for (int i=0; i<offset; i++) { - LOGFONT lf = logFonts [i]; - /** - * Bug in Windows 98. When EnumFontFamiliesEx is called with a specified face name, it - * should enumerate for each available style of that font. Instead, it only enumerates - * once. The fix is to call EnumFontFamilies, which works as expected. - */ - if (OS.IsUnicode) { - OS.EnumFontFamiliesW (hDC, ((LOGFONTW)lf).lfFaceName, lpEnumFontFamProc, scalable ? 1 : 0); - } else { - OS.EnumFontFamiliesA (hDC, ((LOGFONTA)lf).lfFaceName, lpEnumFontFamProc, scalable ? 1 : 0); - } - } - } else { - /* Use the character encoding for the default locale */ - TCHAR lpFaceName = new TCHAR (0, faceName, true); - /** - * Bug in Windows 98. When EnumFontFamiliesEx is called with a specified face name, it - * should enumerate for each available style of that font. Instead, it only enumerates - * once. The fix is to call EnumFontFamilies, which works as expected. - */ - OS.EnumFontFamilies (hDC, lpFaceName, lpEnumFontFamProc, scalable ? 1 : 0); - } - int logPixelsY = OS.GetDeviceCaps(hDC, OS.LOGPIXELSY); - internal_dispose_GC (hDC, null); - - /* Create the fontData from the logfonts */ - int count = 0; - FontData [] result = new FontData [nFonts - offset]; - for (int i=offset; i<nFonts; i++) { - FontData fd = FontData.win32_new (logFonts [i], pixels [i] * 72f / logPixelsY); - int j; - for (j = 0; j < count; j++) { - if (fd.equals (result [j])) break; - } - if (j == count) result [count++] = fd; - } - if (count != result.length) { - FontData [] newResult = new FontData [count]; - System.arraycopy (result, 0, newResult, 0, count); - result = newResult; - } - - /* Clean up */ - callback.dispose (); - logFonts = null; - pixels = null; - metrics = null; - return result; -} - -String getLastError () { - int error = OS.GetLastError(); - if (error == 0) return ""; //$NON-NLS-1$ - return " [GetLastError=0x" + Integer.toHexString(error) + "]"; //$NON-NLS-1$ //$NON-NLS-2$ -} - -String getLastErrorText () { - int error = OS.GetLastError(); - if (error == 0) return ""; //$NON-NLS-1$ - int /*long*/ [] buffer = new int /*long*/ [1]; - int dwFlags = OS.FORMAT_MESSAGE_ALLOCATE_BUFFER | OS.FORMAT_MESSAGE_FROM_SYSTEM | OS.FORMAT_MESSAGE_IGNORE_INSERTS; - int length = OS.FormatMessage(dwFlags, 0, error, OS.LANG_USER_DEFAULT, buffer, 0, 0); - if (length == 0) return " [GetLastError=0x" + Integer.toHexString(error) + "]"; //$NON-NLS-1$ //$NON-NLS-2$ - TCHAR buffer1 = new TCHAR(0, length); - OS.MoveMemory(buffer1, buffer[0], length * TCHAR.sizeof); - if (buffer[0] != 0) OS.LocalFree(buffer[0]); - return buffer1.toString(0, length); -} - -/** - * Returns the matching standard color for the given - * constant, which should be one of the color constants - * specified in class <code>SWT</code>. Any value other - * than one of the SWT color constants which is passed - * in will result in the color black. This color should - * not be freed because it was allocated by the system, - * not the application. - * - * @param id the color constant - * @return the matching color - * - * @exception SWTException <ul> - * <li>ERROR_DEVICE_DISPOSED - if the receiver has been disposed</li> - * </ul> - * - * @see SWT - */ -public Color getSystemColor (int id) { - checkDevice (); - int pixel = 0x00000000; - switch (id) { - case SWT.COLOR_WHITE: pixel = 0x00FFFFFF; break; - case SWT.COLOR_BLACK: pixel = 0x00000000; break; - case SWT.COLOR_RED: pixel = 0x000000FF; break; - case SWT.COLOR_DARK_RED: pixel = 0x00000080; break; - case SWT.COLOR_GREEN: pixel = 0x0000FF00; break; - case SWT.COLOR_DARK_GREEN: pixel = 0x00008000; break; - case SWT.COLOR_YELLOW: pixel = 0x0000FFFF; break; - case SWT.COLOR_DARK_YELLOW: pixel = 0x00008080; break; - case SWT.COLOR_BLUE: pixel = 0x00FF0000; break; - case SWT.COLOR_DARK_BLUE: pixel = 0x00800000; break; - case SWT.COLOR_MAGENTA: pixel = 0x00FF00FF; break; - case SWT.COLOR_DARK_MAGENTA: pixel = 0x00800080; break; - case SWT.COLOR_CYAN: pixel = 0x00FFFF00; break; - case SWT.COLOR_DARK_CYAN: pixel = 0x00808000; break; - case SWT.COLOR_GRAY: pixel = 0x00C0C0C0; break; - case SWT.COLOR_DARK_GRAY: pixel = 0x00808080; break; - } - return Color.win32_new (this, pixel); -} - -/** - * Returns a reasonable font for applications to use. - * On some platforms, this will match the "default font" - * or "system font" if such can be found. This font - * should not be freed because it was allocated by the - * system, not the application. - * <p> - * Typically, applications which want the default look - * should simply not set the font on the widgets they - * create. Widgets are always created with the correct - * default font for the class of user-interface component - * they represent. - * </p> - * - * @return a font - * - * @exception SWTException <ul> - * <li>ERROR_DEVICE_DISPOSED - if the receiver has been disposed</li> - * </ul> - */ -public Font getSystemFont () { - checkDevice (); - int /*long*/ hFont = OS.GetStockObject (OS.SYSTEM_FONT); - return Font.win32_new (this, hFont); -} - -/** - * Returns <code>true</code> if the underlying window system prints out - * warning messages on the console, and <code>setWarnings</code> - * had previously been called with <code>true</code>. - * - * @return <code>true</code>if warnings are being handled, and <code>false</code> otherwise - * - * @exception SWTException <ul> - * <li>ERROR_DEVICE_DISPOSED - if the receiver has been disposed</li> - * </ul> - */ -public boolean getWarnings () { - checkDevice (); - return false; -} - -/** - * Initializes any internal resources needed by the - * device. - * <p> - * This method is called after <code>create</code>. - * </p><p> - * If subclasses reimplement this method, they must - * call the <code>super</code> implementation. - * </p> - * - * @see #create - */ -protected void init () { - if (debug) { - if (!OS.IsWinCE) OS.GdiSetBatchLimit(1); - } - - /* Initialize the system font slot */ - systemFont = getSystemFont(); - - /* Initialize scripts list */ - if (!OS.IsWinCE) { - int /*long*/ [] ppSp = new int /*long*/ [1]; - int [] piNumScripts = new int [1]; - OS.ScriptGetProperties (ppSp, piNumScripts); - scripts = new int /*long*/ [piNumScripts [0]]; - OS.MoveMemory (scripts, ppSp [0], scripts.length * OS.PTR_SIZEOF); - } - - /* - * If we're not on a device which supports palettes, - * don't create one. - */ - int /*long*/ hDC = internal_new_GC (null); - int rc = OS.GetDeviceCaps (hDC, OS.RASTERCAPS); - int bits = OS.GetDeviceCaps (hDC, OS.BITSPIXEL); - int planes = OS.GetDeviceCaps (hDC, OS.PLANES); - - bits *= planes; - if ((rc & OS.RC_PALETTE) == 0 || bits != 8) { - internal_dispose_GC (hDC, null); - return; - } - - int numReserved = OS.GetDeviceCaps (hDC, OS.NUMRESERVED); - int numEntries = OS.GetDeviceCaps (hDC, OS.SIZEPALETTE); - - if (OS.IsWinCE) { - /* - * Feature on WinCE. For some reason, certain 8 bit WinCE - * devices return 0 for the number of reserved entries in - * the system palette. Their system palette correctly contains - * the usual 20 system colors. The workaround is to assume - * there are 20 reserved system colors instead of 0. - */ - if (numReserved == 0 && numEntries >= 20) numReserved = 20; - } - - /* Create the palette and reference counter */ - colorRefCount = new int [numEntries]; - - /* 4 bytes header + 4 bytes per entry * numEntries entries */ - byte [] logPalette = new byte [4 + 4 * numEntries]; - - /* 2 bytes = special header */ - logPalette [0] = 0x00; - logPalette [1] = 0x03; - - /* 2 bytes = number of colors, LSB first */ - logPalette [2] = 0; - logPalette [3] = 1; - - /* - * Create a palette which contains the system entries - * as they are located in the system palette. The - * MSDN article 'Memory Device Contexts' describes - * where system entries are located. On an 8 bit - * display with 20 reserved colors, the system colors - * will be the first 10 entries and the last 10 ones. - */ - byte[] lppe = new byte [4 * numEntries]; - OS.GetSystemPaletteEntries (hDC, 0, numEntries, lppe); - /* Copy all entries from the system palette */ - System.arraycopy (lppe, 0, logPalette, 4, 4 * numEntries); - /* Lock the indices corresponding to the system entries */ - for (int i = 0; i < numReserved / 2; i++) { - colorRefCount [i] = 1; - colorRefCount [numEntries - 1 - i] = 1; - } - internal_dispose_GC (hDC, null); - hPalette = OS.CreatePalette (logPalette); -} -/** - * Invokes platform specific functionality to allocate a new GC handle. - * <p> - * <b>IMPORTANT:</b> This method is <em>not</em> part of the public - * API for <code>Device</code>. It is marked public only so that it - * can be shared within the packages provided by SWT. It is not - * available on all platforms, and should never be called from - * application code. - * </p> - * - * @param data the platform specific GC data - * @return the platform specific GC handle - */ -public abstract int /*long*/ internal_new_GC (GCData data); - -/** - * Invokes platform specific functionality to dispose a GC handle. - * <p> - * <b>IMPORTANT:</b> This method is <em>not</em> part of the public - * API for <code>Device</code>. It is marked public only so that it - * can be shared within the packages provided by SWT. It is not - * available on all platforms, and should never be called from - * application code. - * </p> - * - * @param hDC the platform specific GC handle - * @param data the platform specific GC data - */ -public abstract void /*long*/ internal_dispose_GC (int /*long*/ hDC, GCData data); - -/** - * Returns <code>true</code> if the device has been disposed, - * and <code>false</code> otherwise. - * <p> - * This method gets the dispose state for the device. - * When a device has been disposed, it is an error to - * invoke any other method using the device. - * - * @return <code>true</code> when the device is disposed and <code>false</code> otherwise - */ -public boolean isDisposed () { - synchronized (Device.class) { - return disposed; - } -} - -/** - * Loads the font specified by a file. The font will be - * present in the list of fonts available to the application. - * - * @param path the font file path - * @return whether the font was successfully loaded - * - * @exception SWTException <ul> - * <li>ERROR_NULL_ARGUMENT - if path is null</li> - * <li>ERROR_DEVICE_DISPOSED - if the receiver has been disposed</li> - * </ul> - * - * @see Font - * - * @since 3.3 - */ -public boolean loadFont (String path) { - checkDevice(); - if (path == null) SWT.error (SWT.ERROR_NULL_ARGUMENT); - if (OS.IsWinNT && OS.WIN32_VERSION >= OS.VERSION (4, 10)) { - TCHAR lpszFilename = new TCHAR (0, path, true); - boolean loaded = OS.AddFontResourceEx (lpszFilename, OS.FR_PRIVATE, 0) != 0; - if (loaded) { - if (gdipToken != null) { - if (fontCollection == 0) { - fontCollection = Gdip.PrivateFontCollection_new(); - if (fontCollection == 0) SWT.error(SWT.ERROR_NO_HANDLES); - } - int length = path.length(); - char [] buffer = new char [length + 1]; - path.getChars(0, length, buffer, 0); - Gdip.PrivateFontCollection_AddFontFile(fontCollection, buffer); - } else { - addFont(path); - } - } - return loaded; - } - return false; -} - -void new_Object (Object object) { - synchronized (trackingLock) { - for (int i=0; i<objects.length; i++) { - if (objects [i] == null) { - objects [i] = object; - errors [i] = new Error (); - return; - } - } - Object [] newObjects = new Object [objects.length + 128]; - System.arraycopy (objects, 0, newObjects, 0, objects.length); - newObjects [objects.length] = object; - objects = newObjects; - Error [] newErrors = new Error [errors.length + 128]; - System.arraycopy (errors, 0, newErrors, 0, errors.length); - newErrors [errors.length] = new Error (); - errors = newErrors; - } -} - -void printErrors () { - if (!DEBUG) return; - if (tracking) { - synchronized (trackingLock) { - if (objects == null || errors == null) return; - int objectCount = 0; - int colors = 0, cursors = 0, fonts = 0, gcs = 0, images = 0; - int paths = 0, patterns = 0, regions = 0, textLayouts = 0, transforms = 0; - for (int i=0; i<objects.length; i++) { - Object object = objects [i]; - if (object != null) { - objectCount++; - if (object instanceof Color) colors++; - if (object instanceof Cursor) cursors++; - if (object instanceof Font) fonts++; - if (object instanceof GC) gcs++; - if (object instanceof Image) images++; - if (object instanceof Path) paths++; - if (object instanceof Pattern) patterns++; - if (object instanceof Region) regions++; - if (object instanceof TextLayout) textLayouts++; - if (object instanceof Transform) transforms++; - } - } - if (objectCount != 0) { - String string = "Summary: "; - if (colors != 0) string += colors + " Color(s), "; - if (cursors != 0) string += cursors + " Cursor(s), "; - if (fonts != 0) string += fonts + " Font(s), "; - if (gcs != 0) string += gcs + " GC(s), "; - if (images != 0) string += images + " Image(s), "; - if (paths != 0) string += paths + " Path(s), "; - if (patterns != 0) string += patterns + " Pattern(s), "; - if (regions != 0) string += regions + " Region(s), "; - if (textLayouts != 0) string += textLayouts + " TextLayout(s), "; - if (transforms != 0) string += transforms + " Transforms(s), "; - if (string.length () != 0) { - string = string.substring (0, string.length () - 2); - System.err.println (string); - } - for (int i=0; i<errors.length; i++) { - if (errors [i] != null) errors [i].printStackTrace (System.err); - } - } - } - } -} - -/** - * Releases any internal resources back to the operating - * system and clears all fields except the device handle. - * <p> - * When a device is destroyed, resources that were acquired - * on behalf of the programmer need to be returned to the - * operating system. For example, if the device allocated a - * font to be used as the system font, this font would be - * freed in <code>release</code>. Also,to assist the garbage - * collector and minimize the amount of memory that is not - * reclaimed when the programmer keeps a reference to a - * disposed device, all fields except the handle are zero'd. - * The handle is needed by <code>destroy</code>. - * </p> - * This method is called before <code>destroy</code>. - * </p><p> - * If subclasses reimplement this method, they must - * call the <code>super</code> implementation. - * </p> - * - * @see #dispose - * @see #destroy - */ -protected void release () { - if (gdipToken != null) { - if (fontCollection != 0) { - Gdip.PrivateFontCollection_delete(fontCollection); - } - fontCollection = 0; - Gdip.GdiplusShutdown (gdipToken[0]); - } - gdipToken = null; - scripts = null; - if (hPalette != 0) OS.DeleteObject (hPalette); - hPalette = 0; - colorRefCount = null; - logFonts = null; - nFonts = 0; -} - -/** - * If the underlying window system supports printing warning messages - * to the console, setting warnings to <code>false</code> prevents these - * messages from being printed. If the argument is <code>true</code> then - * message printing is not blocked. - * - * @param warnings <code>true</code>if warnings should be printed, and <code>false</code> otherwise - * - * @exception SWTException <ul> - * <li>ERROR_DEVICE_DISPOSED - if the receiver has been disposed</li> - * </ul> - */ -public void setWarnings (boolean warnings) { - checkDevice (); -} - -} |