1 // Copyright 2003 Adam Megacz, see the COPYING file for licensing [GPL]
4 import org.bouncycastle.util.encoders.Base64;
11 * A Surface, as described in the XWT Reference.
13 * Platform subclasses should include an inner class subclass of
14 * Surface to return from the Platform._createSurface() method
16 * Note that the members in the section 'state variables' are either
17 * in real-time (the actual size/position/state), or in
18 * Scheduler-time (the size/position/state at the time that the
19 * now-executing message was enqueued). This distinction is important.
21 public abstract class Surface extends PixelBuffer {
23 public int getWidth() { return root == null ? 0 : root.width; }
24 public int getHeight() { return root == null ? 0 : root.height; }
26 // Static Data ////////////////////////////////////////////////////////////////////////////////
28 /**< the most recently enqueued Move message; used to throttle the message rate */
29 private static Scheduler.Task lastMoveMessage = null;
31 /** all instances of Surface which need to be refreshed by the Scheduler */
32 public static Vec allSurfaces = new Vec();
34 /** When set to true, render() should abort as soon as possible and restart the rendering process */
35 static volatile boolean abort = false;
37 public static boolean alt = false; ///< true iff the alt button is pressed down, in real time
38 public static boolean control = false; ///< true iff the control button is pressed down, in real time
39 public static boolean shift = false; ///< true iff the shift button is pressed down, in real time
40 public static boolean button1 = false; ///< true iff button 1 is depressed, in Scheduler-time
41 public static boolean button2 = false; ///< true iff button 2 is depressed, in Scheduler-time
42 public static boolean button3 = false; ///< true iff button 3 is depressed, in Scheduler-time
46 // Instance Data ///////////////////////////////////////////////////////////////////////
48 public Box root; /**< The Box at the root of this surface */
49 public String cursor = "default";
51 public int mousex; ///< the x position of the mouse, relative to this Surface, in Scheduler-time
52 public int mousey; ///< the y position of the mouse, relative to this Surface, in Scheduler-time
53 public boolean minimized = false; ///< True iff this surface is minimized, in real time
54 public boolean maximized = false; ///< True iff this surface is maximized, in real time
56 /** Dirty regions on the backbuffer which need to be rebuilt using Box.render() */
57 private DirtyList dirtyRegions = new DirtyList();
60 // Used For Simulating Clicks and DoubleClicks /////////////////////////////////////////////////
62 int last_press_x = Integer.MAX_VALUE; ///< the x-position of the mouse the last time a Press message was enqueued
63 int last_press_y = Integer.MAX_VALUE; ///< the y-position of the mouse the last time a Press message was enqueued
64 static int lastClickButton = 0; ///< the last button to recieve a Click message; used for simulating DoubleClick's
65 static long lastClickTime = 0; ///< the last time a Click message was processed; used for simulating DoubleClick's
68 // Methods to be overridden by subclasses ///////////////////////////////////////////////////////
70 public abstract void toBack(); ///< when invoked, the surface should push itself to the back of the stacking order
71 public abstract void toFront(); ///< when invoked, the surface should pull itself to the front of the stacking order
72 public abstract void syncCursor(); ///< the <i>actual</i> cursor for this surface to the cursor referenced by <tt>cursor</tt>
73 public abstract void setInvisible(boolean b); ///< If <tt>b</tt>, make window invisible; otherwise, make it non-invisible.
74 protected abstract void _setMaximized(boolean b); ///< If <tt>b</tt>, maximize the surface; otherwise, un-maximize it.
75 protected abstract void _setMinimized(boolean b); ///< If <tt>b</tt>, minimize the surface; otherwise, un-minimize it.
76 public abstract void setLocation(); ///< Set the surface's x/y position to that of the root box
77 public abstract void setTitleBarText(String s); ///< Sets the surface's title bar text, if applicable
78 public abstract void setIcon(Picture i); ///< Sets the surface's title bar text, if applicable
79 public abstract void _dispose(); ///< Destroy the surface
80 public void setLimits(int min_width, int min_height, int max_width, int max_height) { }
81 protected abstract void _setSize(int width, int height); ///< Sets the surface's width and height.
84 private int platform_window_width = 0;
85 private int platform_window_height = 0;
86 protected final void setSize(int width, int height) {
87 if (root.width != width || root.height != height) {
88 root.dirty(0, root.height - Main.scarImage.getHeight(), Main.scarImage.getWidth(), Main.scarImage.getHeight());
89 root.width = Math.max(Main.scarImage.getWidth(), width);
90 root.height = Math.max(Main.scarImage.getHeight(), height);
92 if (root.width > 0 && root.height > 0 && platform_window_width != root.width && platform_window_height != root.height)
93 _setSize(root.width, root.height);
96 // Helper methods for subclasses ////////////////////////////////////////////////////////////
98 protected final void Press(final int button) {
99 last_press_x = mousex;
100 last_press_y = mousey;
102 if (button == 1) button1 = true;
103 else if (button == 2) button2 = true;
104 else if (button == 3) button3 = true;
106 if (button == 1) new SimpleMessage("Press1", Boolean.TRUE, Box.whoIs(root, mousex, mousey));
107 else if (button == 2) new SimpleMessage("Press2", Boolean.TRUE, Box.whoIs(root, mousex, mousey));
108 else if (button == 3) {
109 final Box who = Box.whoIs(root, mousex, mousey);
110 Scheduler.add(new Scheduler.Task() { public void perform() {
111 Platform.clipboardReadEnabled = true;
112 root.putAndTriggerTraps("Press3", Boolean.TRUE);
113 Platform.clipboardReadEnabled = false;
118 protected final void Release(int button) {
119 if (button == 1) button1 = false;
120 else if (button == 2) button2 = false;
121 else if (button == 3) button3 = false;
123 if (button == 1) new SimpleMessage("Release1", Boolean.TRUE, Box.whoIs(root, mousex, mousey));
124 else if (button == 2) new SimpleMessage("Release2", Boolean.TRUE, Box.whoIs(root, mousex, mousey));
125 else if (button == 3) new SimpleMessage("Release3", Boolean.TRUE, Box.whoIs(root, mousex, mousey));
127 if (Platform.needsAutoClick() && Math.abs(last_press_x - mousex) < 5 && Math.abs(last_press_y - mousey) < 5) Click(button);
128 last_press_x = Integer.MAX_VALUE;
129 last_press_y = Integer.MAX_VALUE;
132 protected final void Click(int button) {
133 if (button == 1) new SimpleMessage("Click1", Boolean.TRUE, Box.whoIs(root, mousex, mousey));
134 else if (button == 2) new SimpleMessage("Click2", Boolean.TRUE, Box.whoIs(root, mousex, mousey));
135 else if (button == 3) new SimpleMessage("Click3", Boolean.TRUE, Box.whoIs(root, mousex, mousey));
136 if (Platform.needsAutoDoubleClick()) {
137 long now = System.currentTimeMillis();
138 if (lastClickButton == button && now - lastClickTime < 350) DoubleClick(button);
139 lastClickButton = button;
144 protected final void DoubleClick(int button) {
145 if (button == 1) new SimpleMessage("DoubleClick1", Boolean.TRUE, Box.whoIs(root, mousex, mousey));
146 else if (button == 2) new SimpleMessage("DoubleClick2", Boolean.TRUE, Box.whoIs(root, mousex, mousey));
147 else if (button == 3) new SimpleMessage("DoubleClick3", Boolean.TRUE, Box.whoIs(root, mousex, mousey));
150 /** Sends a KeyPressed message; subclasses should not add the C- or A- prefixes,
151 * nor should they capitalize alphabet characters
153 protected final void KeyPressed(String key) {
154 if (key == null) return;
156 if (key.toLowerCase().endsWith("shift")) shift = true;
157 else if (shift) key = key.toUpperCase();
159 if (key.toLowerCase().equals("alt")) alt = true;
160 else if (alt) key = "A-" + key;
162 if (key.toLowerCase().endsWith("control")) control = true;
163 else if (control) key = "C-" + key;
165 final String fkey = key;
166 Scheduler.add(new KMessage(key));
169 // This is implemented as a private static class instead of an anonymous class to work around a GCJ bug
170 private class KMessage extends Scheduler.Task {
172 public KMessage(String k) { key = k; }
173 public void perform() {
174 if (key.equals("C-v") || key.equals("A-v")) Platform.clipboardReadEnabled = true;
175 outer: for(int i=0; i<keywatchers.size(); i++) {
176 Box b = (Box)keywatchers.elementAt(i);
177 for(Box cur = b; cur != null; cur = cur.parent)
178 if (!cur.test(cur.VISIBLE)) continue outer;
179 b.putAndTriggerTraps("KeyPressed", key);
181 Platform.clipboardReadEnabled = false;
185 Vec keywatchers = new Vec();
187 /** sends a KeyReleased message; subclasses should not add the C- or A- prefixes,
188 * nor should they capitalize alphabet characters */
189 protected final void KeyReleased(final String key) {
190 if (key == null) return;
191 if (key.toLowerCase().equals("alt")) alt = false;
192 else if (key.toLowerCase().equals("control")) control = false;
193 else if (key.toLowerCase().equals("shift")) shift = false;
194 Scheduler.add(new Scheduler.Task() { public void perform() {
195 outer: for(int i=0; i<keywatchers.size(); i++) {
196 Box b = (Box)keywatchers.elementAt(i);
197 for(Box cur = b; cur != null; cur = cur.parent)
198 if (!cur.test(cur.VISIBLE)) continue outer;
199 b.putAndTriggerTraps("KeyReleased", key);
205 * Notify XWT that the mouse has moved. If the mouse leaves the
206 * surface, but the host windowing system does not provide its new
207 * position (for example, a Java MouseListener.mouseExited()
208 * message), the subclass should use (-1,-1).
210 protected final void Move(final int newmousex, final int newmousey) {
211 Scheduler.add(lastMoveMessage = new Scheduler.Task() { public void perform() {
212 synchronized(Surface.this) {
214 // if move messages are arriving faster than we can process them, we just start ignoring them
215 if (lastMoveMessage != this) return;
217 int oldmousex = mousex;
218 int oldmousey = mousey;
222 String oldcursor = cursor;
225 // Root gets motion events outside itself (if trapped, of course)
226 if (!root.inside(oldmousex, oldmousey) && !root.inside(mousex, mousey) && (button1 || button2 || button3))
227 root.putAndTriggerTraps("Move", Boolean.TRUE);
229 root.Move(oldmousex, oldmousey, mousex, mousey);
230 if (!cursor.equals(oldcursor)) syncCursor();
235 protected final void SizeChange(final int width, final int height) {
236 Scheduler.add(new Scheduler.Task() { public void perform() {
237 if (width == root.width && height == root.height) return;
238 root.set(root.REFLOW);
239 platform_window_width = width;
240 platform_window_height = height;
241 do { abort = false; root.reflow(width, height); } while(abort);
246 protected final void PosChange(final int x, final int y) {
247 Scheduler.add(new Scheduler.Task() { public void perform() {
250 root.putAndTriggerTraps("PosChange", Boolean.TRUE);
254 protected final void Close() { new SimpleMessage("Close", Boolean.TRUE, root); }
255 protected final void Minimized(boolean b) { minimized = b; new SimpleMessage("Minimized", b ? Boolean.TRUE : Boolean.FALSE, root); }
256 protected final void Maximized(boolean b) { maximized = b; new SimpleMessage("Maximized", b ? Boolean.TRUE : Boolean.FALSE, root); }
257 protected final void Focused(boolean b) { new SimpleMessage("Focused", b ? Boolean.TRUE : Boolean.FALSE, root); }
258 public static void Refresh() {
259 Scheduler.add(new Scheduler.Task() { public void perform() {
263 public static void renderAll() {
264 for(int i=0; i<allSurfaces.size(); i++)
265 ((Surface)allSurfaces.elementAt(i)).render();
268 public final void setMaximized(boolean b) { if (b != maximized) _setMaximized(maximized = b); }
269 public final void setMinimized(boolean b) { if (b != minimized) _setMinimized(minimized = b); }
272 // Other Methods ///////////////////////////////////////////////////////////////////////////////
274 /** Indicates that the Surface is no longer needed */
275 public final void dispose(boolean quitIfAllSurfacesGone) {
276 if (Log.on) Log.log(this, "disposing " + this);
277 allSurfaces.removeElement(this);
279 if (allSurfaces.size() == 0) {
280 if (Log.on) Log.log(this, "exiting because last surface was destroyed");
285 public void dirty(int x, int y, int w, int h) {
286 dirtyRegions.dirty(x, y, w, h);
290 public static Surface fromBox(Box b) {
291 for(int i=0; i<allSurfaces.size(); i++) {
292 Surface s = (Surface)allSurfaces.elementAt(i);
293 if (s.root == b) return s;
298 public Surface(Box root) {
300 Surface old = fromBox(root);
301 if (old != null) old.dispose(false);
303 root.put("thisbox", null);
305 throw new Error("this should never happen");
308 // make sure the root is properly sized
309 do { abort = false; root.reflow(root.width, root.height); } while(abort);
315 private static VectorGraphics.Affine identity = VectorGraphics.Affine.identity();
317 /** runs the prerender() and render() pipelines in the root Box to regenerate the backbuffer, then blits it to the screen */
318 public synchronized void render() {
320 // make sure the root is properly sized
323 root.reflow(root.width, root.height);
324 setSize(root.width, root.height);
325 // update mouseinside and trigger Enter/Leave as a result of box size/position changes
326 String oldcursor = cursor;
328 root.Move(mousex, mousey, mousex, mousey);
329 if (!cursor.equals(oldcursor)) syncCursor();
332 //Box.sizePosChangesSinceLastRender = 0;
333 int[][] dirt = dirtyRegions.flush();
334 for(int i = 0; dirt != null && i < dirt.length; i++) {
335 if (dirt[i] == null) continue;
336 int x = dirt[i][0], y = dirt[i][1], w = dirt[i][2], h = dirt[i][3];
339 if (x+w > root.width) w = root.width - x;
340 if (y+h > root.height) h = root.height - y;
341 if (w <= 0 || h <= 0) continue;
343 root.render(0, 0, x, y, x + w, y + h, this, identity);
344 drawPicture(Main.scarImage,
345 0, root.height - Main.scarImage.getHeight(),
350 // x,y,w,h is only partially reconstructed, so we must be careful not to re-blit it
351 dirtyRegions.dirty(x, y, w, h);
353 // put back all the dirty regions we haven't yet processed (including the current one)
354 for(int j=i; j<dirt.length; j++)
356 dirtyRegions.dirty(dirt[j][0], dirt[j][1], dirt[j][2], dirt[j][3]);
365 // FEATURE: reinstate recycler
366 public class SimpleMessage extends Scheduler.Task {
368 private Box boxContainingMouse;
369 private Object value;
372 SimpleMessage(String name, Object value, Box boxContainingMouse) {
373 this.boxContainingMouse = boxContainingMouse;
379 public void perform() { boxContainingMouse.putAndTriggerTraps(name, value); }
380 public String toString() { return "SimpleMessage [name=" + name + ", value=" + value + "]"; }
385 // Default PixelBuffer implementation /////////////////////////////////////////////////////////
387 public static abstract class DoubleBufferedSurface extends Surface {
389 public DoubleBufferedSurface(Box root) { super(root); }
390 PixelBuffer backbuffer = Platform.createPixelBuffer(Platform.getScreenWidth(), Platform.getScreenHeight(), this);
391 DirtyList screenDirtyRegions = new DirtyList();
393 public void drawPicture(Picture source, int dx, int dy, int cx1, int cy1, int cx2, int cy2) {
394 screenDirtyRegions.dirty(cx1, cy1, cx2 - cx1, cy2 - cy1);
395 backbuffer.drawPicture(source, dx, dy, cx1, cy1, cx2, cy2);
398 public void drawPictureAlphaOnly(Picture source, int dx, int dy, int cx1, int cy1, int cx2, int cy2, int argb) {
399 screenDirtyRegions.dirty(cx1, cy1, cx2 - cx1, cy2 - cy1);
400 backbuffer.drawPictureAlphaOnly(source, dx, dy, cx1, cy1, cx2, cy2, argb);
403 public void fillTrapezoid(int x1, int x2, int y1, int x3, int x4, int y2, int color) {
404 screenDirtyRegions.dirty(Math.min(x1, x3), y1, Math.max(x2, x4) - Math.min(x1, x3), y2 - y1);
405 backbuffer.fillTrapezoid(x1, x2, y1, x3, x4, y2, color);
408 public void render() {
413 public void render_() {
414 int[][] dirt = screenDirtyRegions.flush();
415 for(int i = 0; dirt != null && i < dirt.length; i++) {
416 if (dirt[i] == null) continue;
423 if (x+w > root.width) w = root.width - x;
424 if (y+h > root.height) h = root.height - y;
425 if (w <= 0 || h <= 0) continue;
426 blit(backbuffer, x, y, x, y, w + x, h + y);
430 /** This is how subclasses signal a 'shallow dirty', indicating that although the backbuffer is valid, the screen is not */
431 public final void Dirty(int x, int y, int w, int h) {
432 screenDirtyRegions.dirty(x, y, w, h);
436 /** copies a region from the doublebuffer to this surface */
437 public abstract void blit(PixelBuffer source, int sx, int sy, int dx, int dy, int dx2, int dy2);