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 implements Scheduler.Task {
23 // Static Data ////////////////////////////////////////////////////////////////////////////////
25 private static Boolean T = Boolean.TRUE;
26 private static Boolean F = Boolean.FALSE;
28 /** all instances of Surface which need to be refreshed by the Scheduler */
29 public static Vec allSurfaces = new Vec();
31 /** When set to true, render() should abort as soon as possible and restart the rendering process */
32 static volatile boolean abort = false;
34 public static boolean alt = false; ///< true iff the alt button is pressed down, in real time
35 public static boolean control = false; ///< true iff the control button is pressed down, in real time
36 public static boolean shift = false; ///< true iff the shift button is pressed down, in real time
37 public static boolean button1 = false; ///< true iff button 1 is depressed, in Scheduler-time
38 public static boolean button2 = false; ///< true iff button 2 is depressed, in Scheduler-time
39 public static boolean button3 = false; ///< true iff button 3 is depressed, in Scheduler-tiem
43 // Instance Data ///////////////////////////////////////////////////////////////////////
45 Vec keywatchers = new Vec();
47 public Box root; ///< The Box at the root of this surface
48 public String cursor = "default"; ///< The active cursor to switch to when syncCursor() is called
49 public int mousex; ///< x position of the mouse, in Scheduler-time
50 public int mousey; ///< y position of the mouse, in Scheduler-time
51 public int newmousex = -1; ///< x position of the mouse, in realtime
52 public int newmousey = -1; ///< y position of the mouse, in realtime
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
55 private DirtyList dirtyRegions = new DirtyList(); ///< Dirty regions on the *screen*
57 // Used For Simulating Clicks and DoubleClicks /////////////////////////////////////////////////
59 int last_press_x = Integer.MAX_VALUE; ///< the x-position of the mouse the last time a Press message was enqueued
60 int last_press_y = Integer.MAX_VALUE; ///< the y-position of the mouse the last time a Press message was enqueued
61 static int lastClickButton = 0; ///< the last button to recieve a Click message; used for simulating DoubleClick's
62 static long lastClickTime = 0; ///< the last time a Click message was processed; used for simulating DoubleClick's
65 // Methods to be overridden by subclasses ///////////////////////////////////////////////////////
67 public abstract void toBack(); ///< should push surface to the back of the stacking order
68 public abstract void toFront(); ///< should pull surface to the front of the stacking order
69 public abstract void syncCursor(); ///< set the actual cursor to this.cursor if they do not match
70 public abstract void setInvisible(boolean b); ///< If <tt>b</tt>, make window invisible; otherwise, make it non-invisible.
71 protected abstract void _setMaximized(boolean b); ///< If <tt>b</tt>, maximize the surface; otherwise, un-maximize it.
72 protected abstract void _setMinimized(boolean b); ///< If <tt>b</tt>, minimize the surface; otherwise, un-minimize it.
73 public abstract void setLocation(); ///< Set the surface's x/y position to that of the root box
74 protected abstract void _setSize(int w, int h); ///< set the actual size of the surface
75 public abstract void setTitleBarText(String s); ///< Sets the surface's title bar text, if applicable
76 public abstract void setIcon(Picture i); ///< Sets the surface's title bar text, if applicable
77 public abstract void _dispose(); ///< Destroy the surface
78 public void setLimits(int min_width, int min_height, int max_width, int max_height) { /* FIXME */ }
81 // Helper methods for subclasses ////////////////////////////////////////////////////////////
83 protected final void Press(final int button) {
84 last_press_x = mousex;
85 last_press_y = mousey;
87 if (button == 1) button1 = true;
88 else if (button == 2) button2 = true;
89 else if (button == 3) button3 = true;
91 if (button == 1) new SimpleMessage("Press1", T, Box.whoIs(root, mousex, mousey));
92 else if (button == 2) new SimpleMessage("Press2", T, Box.whoIs(root, mousex, mousey));
93 else if (button == 3) {
94 final Box who = Box.whoIs(root, mousex, mousey);
95 Scheduler.add(new Scheduler.Task() { public void perform() throws JSExn {
96 Platform.clipboardReadEnabled = true;
98 root.putAndTriggerTraps("Press3", T);
100 Platform.clipboardReadEnabled = false;
106 protected final void Release(int button) {
107 if (button == 1) button1 = false;
108 else if (button == 2) button2 = false;
109 else if (button == 3) button3 = false;
111 if (button == 1) new SimpleMessage("Release1", T, Box.whoIs(root, mousex, mousey));
112 else if (button == 2) new SimpleMessage("Release2", T, Box.whoIs(root, mousex, mousey));
113 else if (button == 3) new SimpleMessage("Release3", T, Box.whoIs(root, mousex, mousey));
115 if (Platform.needsAutoClick() && Math.abs(last_press_x - mousex) < 5 && Math.abs(last_press_y - mousey) < 5) Click(button);
116 last_press_x = Integer.MAX_VALUE;
117 last_press_y = Integer.MAX_VALUE;
120 protected final void Click(int button) {
121 if (button == 1) new SimpleMessage("Click1", T, Box.whoIs(root, mousex, mousey));
122 else if (button == 2) new SimpleMessage("Click2", T, Box.whoIs(root, mousex, mousey));
123 else if (button == 3) new SimpleMessage("Click3", T, Box.whoIs(root, mousex, mousey));
124 if (Platform.needsAutoDoubleClick()) {
125 long now = System.currentTimeMillis();
126 if (lastClickButton == button && now - lastClickTime < 350) DoubleClick(button);
127 lastClickButton = button;
132 protected final void DoubleClick(int button) {
133 if (button == 1) new SimpleMessage("DoubleClick1", T, Box.whoIs(root, mousex, mousey));
134 else if (button == 2) new SimpleMessage("DoubleClick2", T, Box.whoIs(root, mousex, mousey));
135 else if (button == 3) new SimpleMessage("DoubleClick3", T, Box.whoIs(root, mousex, mousey));
138 /** Send a KeyPressed message; subclasses should not add the C- or A- prefixes or should they capitalize alphabet chars */
139 protected final void KeyPressed(String key) {
140 if (key == null) return;
141 if (key.toLowerCase().endsWith("shift")) shift = true; else if (shift) key = key.toUpperCase();
142 if (key.toLowerCase().equals("alt")) alt = true; else if (alt) key = "A-" + key;
143 if (key.toLowerCase().endsWith("control")) control = true; else if (control) key = "C-" + key;
144 Scheduler.add(new KMessage(key));
147 // This is implemented as a private static class instead of an anonymous class to work around a GCJ bug
148 private class KMessage implements Scheduler.Task {
150 public KMessage(String k) { key = k; }
151 public void perform() {
152 if (key.equals("C-v") || key.equals("A-v")) Platform.clipboardReadEnabled = true;
153 outer: for(int i=0; i<keywatchers.size(); i++) {
154 Box b = (Box)keywatchers.elementAt(i);
155 for(Box cur = b; cur != null; cur = cur.parent)
156 if (!cur.test(cur.VISIBLE)) continue outer;
158 b.putAndTriggerTraps("KeyPressed", key);
160 Log.log(Surface.class, "Exception thrown from KeyPressed handler");
164 Platform.clipboardReadEnabled = false;
168 /** sends a KeyReleased message; subclasses should not add the C- or A- prefixes or capitalize alpha chars */
169 protected final void KeyReleased(final String key) {
170 if (key == null) return;
171 if (key.toLowerCase().equals("alt")) alt = false;
172 else if (key.toLowerCase().equals("control")) control = false;
173 else if (key.toLowerCase().equals("shift")) shift = false;
174 Scheduler.add(new Scheduler.Task() { public void perform() {
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;
180 b.putAndTriggerTraps("KeyReleased", key);
182 Log.log(Surface.class, "Exception thrown from KeyReleased handler");
189 /** we enqueue ourselves in the Scheduler when we have a Move message to deal with */
190 public void perform() {
191 if (mousex == newmousex && mousey == newmousey) return;
192 int oldmousex = mousex; mousex = newmousex;
193 int oldmousey = mousey; mousey = newmousey;
194 String oldcursor = cursor; cursor = "default";
195 // Root gets motion events outside itself (if trapped)
196 if (!root.inside(oldmousex, oldmousey) && !root.inside(mousex, mousey) && (button1 || button2 || button3))
198 root.putAndTriggerTraps("Move", T);
200 Log.log(Surface.class, "Exception thrown from Move message handler");
203 root.Move(oldmousex, oldmousey, mousex, mousey);
204 if (!cursor.equals(oldcursor)) syncCursor();
208 * Notify XWT that the mouse has moved. If the mouse leaves the
209 * surface, but the host windowing system does not provide its new
210 * position (for example, a Java MouseListener.mouseExited()
211 * message), the subclass should use (-1,-1).
213 protected final void Move(final int newmousex, final int newmousey) {
214 this.newmousex = newmousex;
215 this.newmousey = newmousey;
219 // FEATURE: can we avoid creating objects here?
220 /** subclasses should invoke this method when the user resizes the window */
221 protected final void SizeChange(final int width, final int height) {
222 Scheduler.addAtFront(new Scheduler.Task() { public void perform() {
223 // dirty the place where the scar used to be
224 root.dirty(0, root.maxheight - Main.scarImage.height, Main.scarImage.width, Main.scarImage.height);
225 root.setMaxWidth(JS.N(width));
226 root.setMaxHeight(JS.N(height));
231 // FEATURE: can we avoid creating objects here?
232 protected final void PosChange(final int x, final int y) {
233 Scheduler.add(new Scheduler.Task() { public void perform() throws JSExn {
236 root.putAndTriggerTraps("PosChange", T);
240 protected final void Close() { new SimpleMessage("Close", T, root); }
241 protected final void Minimized(boolean b) { minimized = b; new SimpleMessage("Minimized", b ? T : F, root); }
242 protected final void Maximized(boolean b) { maximized = b; new SimpleMessage("Maximized", b ? T : F, root); }
243 protected final void Focused(boolean b) { new SimpleMessage("Focused", b ? T : F, root); }
244 public static void Refresh() { Scheduler.add(renderAll); }
246 public static final Scheduler.Task renderAll = new Scheduler.Task() { public void perform() {
247 for(int i=0; i<allSurfaces.size(); i++)
248 ((Surface)allSurfaces.elementAt(i)).render();
251 public final void setMaximized(boolean b) { if (b != maximized) _setMaximized(maximized = b); }
252 public final void setMinimized(boolean b) { if (b != minimized) _setMinimized(minimized = b); }
255 // Other Methods ///////////////////////////////////////////////////////////////////////////////
257 /** Indicates that the Surface is no longer needed */
258 public final void dispose(boolean quitIfAllSurfacesGone) {
259 if (Log.on) Log.log(this, "disposing " + this);
260 allSurfaces.removeElement(this);
262 if (allSurfaces.size() == 0) {
263 if (Log.on) Log.log(this, "exiting because last surface was destroyed");
268 public void dirty(int x, int y, int w, int h) {
269 dirtyRegions.dirty(x, y, w, h);
273 public static Surface fromBox(Box b) {
274 for(int i=0; i<allSurfaces.size(); i++) {
275 Surface s = (Surface)allSurfaces.elementAt(i);
276 if (s.root == b) return s;
281 public Surface(Box root) {
283 root.setMaxWidth(JS.N(Math.min(Platform.getScreenWidth(), root.maxwidth)));
284 root.setMaxHeight(JS.N(Math.min(Platform.getScreenHeight(), root.maxheight)));
285 Surface old = fromBox(root);
286 if (old != null) old.dispose(false);
287 else root.removeSelf();
291 private static VectorGraphics.Affine identity = VectorGraphics.Affine.identity();
293 /** runs the prerender() and render() pipelines in the root Box to regenerate the backbuffer, then blits it to the screen */
294 public synchronized void render() {
296 // dirty the place where the scar used to be in case the root window size was programmatically changed
297 if (root.maxwidth != root.width || root.maxheight != root.height)
298 root.dirty(0, root.height - Main.scarImage.height, Main.scarImage.width, Main.scarImage.height);
300 // make sure the root is properly sized
304 root.resize(root.x, root.y, root.maxwidth, root.maxheight);
305 root.resize_children();
306 _setSize(root.width, root.height);
307 String oldcursor = cursor;
309 root.Move(mousex, mousey, mousex, mousey);
310 if (!cursor.equals(oldcursor)) syncCursor();
313 int[][] dirt = dirtyRegions.flush();
314 for(int i = 0; dirt != null && i < dirt.length; i++) {
315 if (dirt[i] == null) continue;
316 int x = dirt[i][0], y = dirt[i][1], w = dirt[i][2], h = dirt[i][3];
319 if (x+w > root.width) w = root.width - x;
320 if (y+h > root.height) h = root.height - y;
321 if (w <= 0 || h <= 0) continue;
323 root.render(0, 0, x, y, x + w, y + h, this, identity);
324 drawPicture(Main.scarImage, 0, root.height - Main.scarImage.height, x, y, w, h);
328 // x,y,w,h is only partially reconstructed, so we must be careful not to re-blit it
329 dirtyRegions.dirty(x, y, w, h);
331 // put back all the dirty regions we haven't yet processed (including the current one)
332 for(int j=i; j<dirt.length; j++)
334 dirtyRegions.dirty(dirt[j][0], dirt[j][1], dirt[j][2], dirt[j][3]);
343 // FEATURE: reinstate recycler
344 public class SimpleMessage implements Scheduler.Task {
346 private Box boxContainingMouse;
347 private Object value;
350 SimpleMessage(String name, Object value, Box boxContainingMouse) {
351 this.boxContainingMouse = boxContainingMouse;
357 public void perform() throws JSExn { boxContainingMouse.putAndTriggerTraps(name, value); }
358 public String toString() { return "SimpleMessage [name=" + name + ", value=" + value + "]"; }
363 // Default PixelBuffer implementation /////////////////////////////////////////////////////////
365 public static abstract class DoubleBufferedSurface extends Surface {
367 public DoubleBufferedSurface(Box root) { super(root); }
368 PixelBuffer backbuffer = Platform.createPixelBuffer(Platform.getScreenWidth(), Platform.getScreenHeight(), this);
369 DirtyList screenDirtyRegions = new DirtyList();
371 public void drawPicture(Picture source, int dx, int dy, int cx1, int cy1, int cx2, int cy2) {
372 screenDirtyRegions.dirty(cx1, cy1, cx2 - cx1, cy2 - cy1);
373 backbuffer.drawPicture(source, dx, dy, cx1, cy1, cx2, cy2);
376 public void drawGlyph(Font.Glyph source, int dx, int dy, int cx1, int cy1, int cx2, int cy2, int argb) {
377 screenDirtyRegions.dirty(cx1, cy1, cx2 - cx1, cy2 - cy1);
378 backbuffer.drawGlyph(source, dx, dy, cx1, cy1, cx2, cy2, argb);
381 public void fillTrapezoid(int x1, int x2, int y1, int x3, int x4, int y2, int color) {
382 screenDirtyRegions.dirty(Math.min(x1, x3), y1, Math.max(x2, x4) - Math.min(x1, x3), y2 - y1);
383 backbuffer.fillTrapezoid(x1, x2, y1, x3, x4, y2, color);
386 public void render() {
391 public void render_() {
392 int[][] dirt = screenDirtyRegions.flush();
393 for(int i = 0; dirt != null && i < dirt.length; i++) {
394 if (dirt[i] == null) continue;
401 if (x+w > root.width) w = root.width - x;
402 if (y+h > root.height) h = root.height - y;
403 if (w <= 0 || h <= 0) continue;
404 blit(backbuffer, x, y, x, y, w + x, h + y);
408 /** This is how subclasses signal a 'shallow dirty', indicating that although the backbuffer is valid, the screen is not */
409 public final void Dirty(int x, int y, int w, int h) {
410 screenDirtyRegions.dirty(x, y, w, h);
414 /** copies a region from the doublebuffer to this surface */
415 public abstract void blit(PixelBuffer source, int sx, int sy, int dx, int dy, int dx2, int dy2);