Mercurial > projects > dwt-mac
view dwt/graphics/Device.d @ 151:0ba75290f8ce
Added a bunch of missing defaults to switch statements
author | Jacob Carlborg <doob@me.com> |
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date | Wed, 10 Jun 2009 21:52:31 +0200 |
parents | ad4e1fe71a5a |
children |
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/******************************************************************************* * Copyright (c) 2000, 2008 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 * * Port to the D programming language: * Jacob Carlborg <doob@me.com> *******************************************************************************/ module dwt.graphics.Device; import dwt.DWT; import dwt.DWTException; import dwt.internal.Compatibility; import dwt.internal.cocoa.NSArray; import dwt.internal.cocoa.NSAutoreleasePool; import dwt.internal.cocoa.NSDictionary; import dwt.internal.cocoa.NSFont; import dwt.internal.cocoa.NSFontManager; import dwt.internal.cocoa.NSMutableDictionary; import dwt.internal.cocoa.NSNumber; import dwt.internal.cocoa.NSRect; import dwt.internal.cocoa.NSScreen; import dwt.internal.cocoa.NSSize; import dwt.internal.cocoa.NSString; import dwt.internal.cocoa.NSThread; import dwt.internal.cocoa.NSValue; import dwt.internal.cocoa.OS; import cocoa = dwt.internal.cocoa.id; import dwt.dwthelper.System; import dwt.dwthelper.utils; import dwt.graphics.Drawable; import dwt.graphics.Color; import dwt.graphics.DeviceData; import dwt.graphics.Font; import dwt.graphics.FontData; import dwt.graphics.GCData; import dwt.graphics.Point; import dwt.graphics.Rectangle; import Carbon = dwt.internal.c.Carbon; import dwt.internal.objc.cocoa.Cocoa; import objc = dwt.internal.objc.runtime; import tango.io.Stdout; /** * 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 cast(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 : Drawable { /* debug_ing */ public static const bool DEBUG = true; bool debug_ = DEBUG; bool tracking = DEBUG; Error [] errors; Object [] objects; Object trackingLock; /* Disposed flag */ bool disposed, warnings; Color COLOR_BLACK, COLOR_DARK_RED, COLOR_DARK_GREEN, COLOR_DARK_YELLOW, COLOR_DARK_BLUE; Color COLOR_DARK_MAGENTA, COLOR_DARK_CYAN, COLOR_GRAY, COLOR_DARK_GRAY, COLOR_RED; Color COLOR_GREEN, COLOR_YELLOW, COLOR_BLUE, COLOR_MAGENTA, COLOR_CYAN, COLOR_WHITE; /* System Font */ Font systemFont; /* Device DPI */ Point dpi; /* * TEMPORARY CODE. When a graphics object is * created and the device parameter is null, * the current Display is used. This presents * a problem because DWT graphics does not * reference classes in DWT widgets. The correct * fix is to remove this feature. Unfortunately, * too many application programs rely on this * feature. * * This code will be removed in the future. */ protected static Device CurrentDevice; protected static Runnable DeviceFinder; static this (){ try { ClassInfo.find ("dwt.widgets.Display"); } catch (Throwable e) {} } /* * TEMPORARY CODE. */ static synchronized Device getDevice () { if (DeviceFinder !is 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 this() { 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 this(DeviceData data) { synchronized (Device.classinfo) { if (data !is null) { debug_ = data.debug_; tracking = data.tracking; } if (tracking) { errors = new Error [128]; objects = new Object [128]; trackingLock = new Object (); } NSAutoreleasePool pool = cast(NSAutoreleasePool) (new NSAutoreleasePool()).alloc().init(); NSThread nsthread = NSThread.currentThread(); NSMutableDictionary dictionary = nsthread.threadDictionary(); NSString key = NSString.stringWith("SWT_NSAutoreleasePool"); cocoa.id obj = dictionary.objectForKey(key); if (obj is null) { NSNumber nsnumber = NSNumber.numberWithInteger(cast(NSInteger) pool.id); dictionary.setObject(nsnumber, key); } else { pool.release(); } //check and create pool create (data); init_ (); } } /** * Throws an <code>DWTException</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 DWT 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 DWT, there may be more or fewer error * checks and exceptions may be thrown for different reasons. * <p> * * @exception DWTException <ul> * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> * </ul> */ protected void checkDevice () { if (disposed) DWT.error(DWT.ERROR_DEVICE_DISPOSED); } /** * 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) { } /** * 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.classinfo) { if (isDisposed()) return; checkDevice (); release (); destroy (); disposed = true; if (tracking) { synchronized (trackingLock) { objects = null; errors = null; trackingLock = null; } } } } void dispose_Object (Object object) { synchronized (trackingLock) { for (int i=0; i<objects.length; i++) { if (objects [i] is object) { objects [i] = null; errors [i] = null; return; } } } } /** * 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 () { } /** * Returns a rectangle describing the receiver's size and location. * * @return the bounding rectangle * * @exception DWTException <ul> * <li>ERROR_DEVICE_DISPOSED - if the receiver has been disposed</li> * </ul> */ public Rectangle getBounds () { checkDevice (); NSRect frame = getPrimaryScreen().frame(); return new Rectangle(cast(int)frame.x, cast(int)frame.y, cast(int)frame.width, cast(int)frame.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 DWTException <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] !is 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] !is 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 DWTException <ul> * <li>ERROR_DEVICE_DISPOSED - if the receiver has been disposed</li> * </ul> * * @see #getBounds */ public Rectangle getClientArea () { checkDevice (); 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 DWTException <ul> * <li>ERROR_DEVICE_DISPOSED - if the receiver has been disposed</li> * </ul> */ public int getDepth () { checkDevice (); return cast(int)/*64*/OS.NSBitsPerPixelFromDepth(getPrimaryScreen().depth()); } /** * 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 DWTException <ul> * <li>ERROR_DEVICE_DISPOSED - if the receiver has been disposed</li> * </ul> */ public Point getDPI () { checkDevice (); return getScreenDPI(); } NSScreen getPrimaryScreen () { NSArray screens = NSScreen.screens(); return new NSScreen(screens.objectAtIndex(0)); } /** * 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 DWTException <ul> * <li>ERROR_DEVICE_DISPOSED - if the receiver has been disposed</li> * </ul> */ public FontData[] getFontList (String faceName, bool scalable) { checkDevice (); if (!scalable) return new FontData[0]; NSArray families = NSFontManager.sharedFontManager().availableFontFamilies(); int famCount = families.count(); int count = 0; FontData[] fds = new FontData[100]; for (int i = 0; i < famCount; i++) { NSString nsfamily = new NSString(families.objectAtIndex(i)); String family = nsfamily.getString(); NSArray fonts = NSFontManager.sharedFontManager().availableMembersOfFontFamily(nsfamily); int fontCount = fonts.count(); for (int j = 0; j < fontCount; j++) { NSArray fontDetails = new NSArray(fonts.objectAtIndex(j)); NSString str = new NSString(fontDetails.objectAtIndex(0)); String nsName = str.getString(); String name = nsName; int index = nsName.indexOf('-'); if (index !is -1) name = name.substring(0, index); int style = DWT.NORMAL; if (nsName.indexOf("Italic") !is -1) style |= DWT.ITALIC; if (nsName.indexOf("Bold") !is -1) style |= DWT.BOLD; if (faceName is null || Compatibility.equalsIgnoreCase(faceName, name)) { FontData data = new FontData(family, 0, style); data.nsName = nsName; if (count is fds.length) { FontData[] newFds = new FontData[fds.length + 100]; System.arraycopy(fds, 0, newFds, 0, fds.length); fds = newFds; } fds[count++] = data; } } } if (count is fds.length) return fds; FontData[] result = new FontData[count]; System.arraycopy(fds, 0, result, 0, count); return result; } Point getScreenDPI () { NSDictionary dictionary = getPrimaryScreen().deviceDescription(); NSValue value = new NSValue(dictionary.objectForKey(new cocoa.id(OS.NSDeviceResolution)).id); NSSize size = value.sizeValue(); return new Point(cast(int)size.width, cast(int)size.height); } /** * Returns the matching standard color for the given * constant, which should be one of the color constants * specified in class <code>DWT</code>. Any value other * than one of the DWT 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 DWTException <ul> * <li>ERROR_DEVICE_DISPOSED - if the receiver has been disposed</li> * </ul> * * @see DWT */ public Color getSystemColor (int id) { checkDevice (); switch (id) { case DWT.COLOR_BLACK: return COLOR_BLACK; case DWT.COLOR_DARK_RED: return COLOR_DARK_RED; case DWT.COLOR_DARK_GREEN: return COLOR_DARK_GREEN; case DWT.COLOR_DARK_YELLOW: return COLOR_DARK_YELLOW; case DWT.COLOR_DARK_BLUE: return COLOR_DARK_BLUE; case DWT.COLOR_DARK_MAGENTA: return COLOR_DARK_MAGENTA; case DWT.COLOR_DARK_CYAN: return COLOR_DARK_CYAN; case DWT.COLOR_GRAY: return COLOR_GRAY; case DWT.COLOR_DARK_GRAY: return COLOR_DARK_GRAY; case DWT.COLOR_RED: return COLOR_RED; case DWT.COLOR_GREEN: return COLOR_GREEN; case DWT.COLOR_YELLOW: return COLOR_YELLOW; case DWT.COLOR_BLUE: return COLOR_BLUE; case DWT.COLOR_MAGENTA: return COLOR_MAGENTA; case DWT.COLOR_CYAN: return COLOR_CYAN; case DWT.COLOR_WHITE: return COLOR_WHITE; default: } return COLOR_BLACK; } /** * 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 DWTException <ul> * <li>ERROR_DEVICE_DISPOSED - if the receiver has been disposed</li> * </ul> */ public Font getSystemFont () { checkDevice (); return systemFont; } /** * 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 DWTException <ul> * <li>ERROR_DEVICE_DISPOSED - if the receiver has been disposed</li> * </ul> */ public bool getWarnings () { checkDevice (); return warnings; } /** * 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_ () { /* Create the standard colors */ COLOR_BLACK = new Color (this, 0,0,0); COLOR_DARK_RED = new Color (this, 0x80,0,0); COLOR_DARK_GREEN = new Color (this, 0,0x80,0); COLOR_DARK_YELLOW = new Color (this, 0x80,0x80,0); COLOR_DARK_BLUE = new Color (this, 0,0,0x80); COLOR_DARK_MAGENTA = new Color (this, 0x80,0,0x80); COLOR_DARK_CYAN = new Color (this, 0,0x80,0x80); COLOR_GRAY = new Color (this, 0xC0,0xC0,0xC0); COLOR_DARK_GRAY = new Color (this, 0x80,0x80,0x80); COLOR_RED = new Color (this, 0xFF,0,0); COLOR_GREEN = new Color (this, 0,0xFF,0); COLOR_YELLOW = new Color (this, 0xFF,0xFF,0); COLOR_BLUE = new Color (this, 0,0,0xFF); COLOR_MAGENTA = new Color (this, 0xFF,0,0xFF); COLOR_CYAN = new Color (this, 0,0xFF,0xFF); COLOR_WHITE = new Color (this, 0xFF,0xFF,0xFF); /* Initialize the system font slot */ bool smallFonts = System.getProperty("org.eclipse.swt.internal.carbon.smallFonts") !is null; Carbon.CGFloat systemFontSize = smallFonts ? NSFont.smallSystemFontSize() : NSFont.systemFontSize(); Point dpi = this.dpi = getDPI(), screenDPI = getScreenDPI(); NSFont font = NSFont.systemFontOfSize(systemFontSize * dpi.y / screenDPI.y); systemFont = Font.cocoa_new(this, font); } /** * 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 DWT. 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 objc.id 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 DWT. 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 internal_dispose_GC (objc.id handle, 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 bool isDisposed () { synchronized (Device.classinfo) { 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 DWTException <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 bool loadFont (String path) { checkDevice(); if (path is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); bool result = false; char [] chars = new char [path.length ()]; path.getChars (0, chars.length, chars, 0); //TODO not done return result; } void new_Object (Object object) { synchronized (trackingLock) { for (int i=0; i<objects.length; i++) { if (objects [i] is 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; } } /** * 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 () { COLOR_BLACK = COLOR_DARK_RED = COLOR_DARK_GREEN = COLOR_DARK_YELLOW = COLOR_DARK_BLUE = COLOR_DARK_MAGENTA = COLOR_DARK_CYAN = COLOR_GRAY = COLOR_DARK_GRAY = COLOR_RED = COLOR_GREEN = COLOR_YELLOW = COLOR_BLUE = COLOR_MAGENTA = COLOR_CYAN = COLOR_WHITE = null; } /** * 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 DWTException <ul> * <li>ERROR_DEVICE_DISPOSED - if the receiver has been disposed</li> * </ul> */ public void setWarnings (bool warnings) { checkDevice (); this.warnings = warnings; } }