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 // Static Data ////////////////////////////////////////////////////////////////////////////////
25 /**< the most recently enqueued Move message; used to throttle the message rate */
26 private static Scheduler.Task lastMoveMessage = null;
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-time
43 // Instance Data ///////////////////////////////////////////////////////////////////////
45 public Box root; /**< The Box at the root of this surface */
46 public String cursor = "default";
48 public int mousex; ///< the x position of the mouse, relative to this Surface, in Scheduler-time
49 public int mousey; ///< the y position of the mouse, relative to this Surface, in Scheduler-time
50 public boolean minimized = false; ///< True iff this surface is minimized, in real time
51 public boolean maximized = false; ///< True iff this surface is maximized, in real time
53 /** Dirty regions on the backbuffer which need to be rebuilt using Box.render() */
54 private DirtyList dirtyRegions = new DirtyList();
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(); ///< when invoked, the surface should push itself to the back of the stacking order
68 public abstract void toFront(); ///< when invoked, the surface should pull itself to the front of the stacking order
69 public abstract void syncCursor(); ///< the <i>actual</i> cursor for this surface to the cursor referenced by <tt>cursor</tt>
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 public abstract void setTitleBarText(String s); ///< Sets the surface's title bar text, if applicable
75 public abstract void setIcon(Picture i); ///< Sets the surface's title bar text, if applicable
76 public abstract void _dispose(); ///< Destroy the surface
80 // Sizing /////////////////////////////////////////////////////////////////////////////////
82 private int width = 0;
83 private int height = 0;
84 public int getWidth() { return width; }
85 public int getHeight() { return height; }
87 public void setLimits(int min_width, int min_height, int max_width, int max_height) { }
89 /// should be overriden by subclasses; programmatically sets the height
90 protected abstract void _setSize(int width, int height);
92 public final void setWidth(int width) { setSize(width, this.height); }
93 public final void setHeight(int height) { setSize(this.width, height); }
94 protected final void setSize(int width, int height) {
95 if (this.width == width && this.height == height) return;
96 this.width = Math.max(Main.scarImage.getWidth(), width);
97 this.height = Math.max(Main.scarImage.getHeight(), height);
98 _setSize(width, height);
102 // Helper methods for subclasses ////////////////////////////////////////////////////////////
104 protected final void Press(final int button) {
105 last_press_x = mousex;
106 last_press_y = mousey;
108 if (button == 1) button1 = true;
109 else if (button == 2) button2 = true;
110 else if (button == 3) button3 = true;
112 if (button == 1) new SimpleMessage("Press1", Boolean.TRUE, Box.whoIs(root, mousex, mousey));
113 else if (button == 2) new SimpleMessage("Press2", Boolean.TRUE, Box.whoIs(root, mousex, mousey));
114 else if (button == 3) {
115 final Box who = Box.whoIs(root, mousex, mousey);
116 Scheduler.add(new Scheduler.Task() { public void perform() {
117 Platform.clipboardReadEnabled = true;
118 root.putAndTriggerTraps("Press3", Boolean.TRUE);
119 Platform.clipboardReadEnabled = false;
124 protected final void Release(int button) {
125 if (button == 1) button1 = false;
126 else if (button == 2) button2 = false;
127 else if (button == 3) button3 = false;
129 if (button == 1) new SimpleMessage("Release1", Boolean.TRUE, Box.whoIs(root, mousex, mousey));
130 else if (button == 2) new SimpleMessage("Release2", Boolean.TRUE, Box.whoIs(root, mousex, mousey));
131 else if (button == 3) new SimpleMessage("Release3", Boolean.TRUE, Box.whoIs(root, mousex, mousey));
133 if (Platform.needsAutoClick() && Math.abs(last_press_x - mousex) < 5 && Math.abs(last_press_y - mousey) < 5) Click(button);
134 last_press_x = Integer.MAX_VALUE;
135 last_press_y = Integer.MAX_VALUE;
138 protected final void Click(int button) {
139 if (button == 1) new SimpleMessage("Click1", Boolean.TRUE, Box.whoIs(root, mousex, mousey));
140 else if (button == 2) new SimpleMessage("Click2", Boolean.TRUE, Box.whoIs(root, mousex, mousey));
141 else if (button == 3) new SimpleMessage("Click3", Boolean.TRUE, Box.whoIs(root, mousex, mousey));
142 if (Platform.needsAutoDoubleClick()) {
143 long now = System.currentTimeMillis();
144 if (lastClickButton == button && now - lastClickTime < 350) DoubleClick(button);
145 lastClickButton = button;
150 protected final void DoubleClick(int button) {
151 if (button == 1) new SimpleMessage("DoubleClick1", Boolean.TRUE, Box.whoIs(root, mousex, mousey));
152 else if (button == 2) new SimpleMessage("DoubleClick2", Boolean.TRUE, Box.whoIs(root, mousex, mousey));
153 else if (button == 3) new SimpleMessage("DoubleClick3", Boolean.TRUE, Box.whoIs(root, mousex, mousey));
156 /** Sends a KeyPressed message; subclasses should not add the C- or A- prefixes,
157 * nor should they capitalize alphabet characters
159 protected final void KeyPressed(String key) {
160 if (key == null) return;
162 if (key.toLowerCase().endsWith("shift")) shift = true;
163 else if (shift) key = key.toUpperCase();
165 if (key.toLowerCase().equals("alt")) alt = true;
166 else if (alt) key = "A-" + key;
168 if (key.toLowerCase().endsWith("control")) control = true;
169 else if (control) key = "C-" + key;
171 final String fkey = key;
172 Scheduler.add(new KMessage(key));
175 // This is implemented as a private static class instead of an anonymous class to work around a GCJ bug
176 private class KMessage extends Scheduler.Task {
178 public KMessage(String k) { key = k; }
179 public void perform() {
180 if (key.equals("C-v") || key.equals("A-v")) Platform.clipboardReadEnabled = true;
181 outer: for(int i=0; i<keywatchers.size(); i++) {
182 Box b = (Box)keywatchers.elementAt(i);
183 for(Box cur = b; cur != null; cur = cur.parent)
184 if (!cur.test(cur.VISIBLE)) continue outer;
185 b.putAndTriggerTraps("KeyPressed", key);
187 Platform.clipboardReadEnabled = false;
191 Vec keywatchers = new Vec();
193 /** sends a KeyReleased message; subclasses should not add the C- or A- prefixes,
194 * nor should they capitalize alphabet characters */
195 protected final void KeyReleased(final String key) {
196 if (key == null) return;
197 if (key.toLowerCase().equals("alt")) alt = false;
198 else if (key.toLowerCase().equals("control")) control = false;
199 else if (key.toLowerCase().equals("shift")) shift = false;
200 Scheduler.add(new Scheduler.Task() { public void perform() {
201 outer: for(int i=0; i<keywatchers.size(); i++) {
202 Box b = (Box)keywatchers.elementAt(i);
203 for(Box cur = b; cur != null; cur = cur.parent)
204 if (!cur.test(cur.VISIBLE)) continue outer;
205 b.putAndTriggerTraps("KeyReleased", key);
211 * Notify XWT that the mouse has moved. If the mouse leaves the
212 * surface, but the host windowing system does not provide its new
213 * position (for example, a Java MouseListener.mouseExited()
214 * message), the subclass should use (-1,-1).
216 protected final void Move(final int newmousex, final int newmousey) {
217 Scheduler.add(lastMoveMessage = new Scheduler.Task() { public void perform() {
218 synchronized(Surface.this) {
220 // if move messages are arriving faster than we can process them, we just start ignoring them
221 if (lastMoveMessage != this) return;
223 int oldmousex = mousex;
224 int oldmousey = mousey;
228 String oldcursor = cursor;
231 // Root gets motion events outside itself (if trapped, of course)
232 if (!root.inside(oldmousex, oldmousey) && !root.inside(mousex, mousey) && (button1 || button2 || button3))
233 root.putAndTriggerTraps("Move", Boolean.TRUE);
235 root.Move(oldmousex, oldmousey, mousex, mousey);
236 if (!cursor.equals(oldcursor)) syncCursor();
241 protected final void SizeChange(final int width, final int height) {
242 Scheduler.add(new Scheduler.Task() { public void perform() {
243 root.set(root.REFLOW);
244 Surface.this.width = width;
245 Surface.this.height = height;
250 protected final void PosChange(final int x, final int y) {
251 Scheduler.add(new Scheduler.Task() { public void perform() {
254 root.putAndTriggerTraps("PosChange", Boolean.TRUE);
258 protected final void Close() { new SimpleMessage("Close", Boolean.TRUE, root); }
259 protected final void Minimized(boolean b) { minimized = b; new SimpleMessage("Minimized", b ? Boolean.TRUE : Boolean.FALSE, root); }
260 protected final void Maximized(boolean b) { maximized = b; new SimpleMessage("Maximized", b ? Boolean.TRUE : Boolean.FALSE, root); }
261 protected final void Focused(boolean b) { new SimpleMessage("Focused", b ? Boolean.TRUE : Boolean.FALSE, root); }
262 public static void Refresh() {
263 Scheduler.add(new Scheduler.Task() { public void perform() {
267 public static void renderAll() {
268 for(int i=0; i<allSurfaces.size(); i++)
269 ((Surface)allSurfaces.elementAt(i)).render();
272 public final void setMaximized(boolean b) { if (b != maximized) _setMaximized(maximized = b); }
273 public final void setMinimized(boolean b) { if (b != minimized) _setMinimized(minimized = b); }
276 // Other Methods ///////////////////////////////////////////////////////////////////////////////
278 /** Indicates that the Surface is no longer needed */
279 public final void dispose(boolean quitIfAllSurfacesGone) {
280 if (Log.on) Log.log(this, "disposing " + this);
281 allSurfaces.removeElement(this);
283 if (allSurfaces.size() == 0) {
284 if (Log.on) Log.log(this, "exiting because last surface was destroyed");
289 public void dirty(int x, int y, int w, int h) {
290 dirtyRegions.dirty(x, y, w, h);
294 public static Surface fromBox(Box b) {
295 for(int i=0; i<allSurfaces.size(); i++) {
296 Surface s = (Surface)allSurfaces.elementAt(i);
297 if (s.root == b) return s;
302 public Surface(Box root) {
304 Surface old = fromBox(root);
305 if (old != null) old.dispose(false);
307 root.put("thisbox", null);
309 throw new Error("this should never happen");
314 private static VectorGraphics.Affine identity = VectorGraphics.Affine.identity();
316 /** runs the prerender() and render() pipelines in the root Box to regenerate the backbuffer, then blits it to the screen */
317 public synchronized void render() {
320 if (root.width != width || root.height != height)
321 root.dirty(0, root.height - Main.scarImage.getHeight(), Main.scarImage.getWidth(), Main.scarImage.getHeight());
323 // make sure the root is properly sized
326 root.reflow(width, height);
327 setSize(width, height);
328 // update mouseinside and trigger Enter/Leave as a result of box size/position changes
329 String oldcursor = cursor;
331 root.Move(mousex, mousey, mousex, mousey);
332 if (!cursor.equals(oldcursor)) syncCursor();
335 //Box.sizePosChangesSinceLastRender = 0;
336 int[][] dirt = dirtyRegions.flush();
337 for(int i = 0; dirt != null && i < dirt.length; i++) {
338 if (dirt[i] == null) continue;
339 int x = dirt[i][0], y = dirt[i][1], w = dirt[i][2], h = dirt[i][3];
342 if (x+w > root.width) w = root.width - x;
343 if (y+h > root.height) h = root.height - y;
344 if (w <= 0 || h <= 0) continue;
346 root.render(0, 0, x, y, x + w, y + h, this, identity);
347 drawPicture(Main.scarImage,
348 0, root.height - Main.scarImage.getHeight(),
353 // x,y,w,h is only partially reconstructed, so we must be careful not to re-blit it
354 dirtyRegions.dirty(x, y, w, h);
356 // put back all the dirty regions we haven't yet processed (including the current one)
357 for(int j=i; j<dirt.length; j++)
359 dirtyRegions.dirty(dirt[j][0], dirt[j][1], dirt[j][2], dirt[j][3]);
368 // FEATURE: reinstate recycler
369 public class SimpleMessage extends Scheduler.Task {
371 private Box boxContainingMouse;
372 private Object value;
375 SimpleMessage(String name, Object value, Box boxContainingMouse) {
376 this.boxContainingMouse = boxContainingMouse;
382 public void perform() { boxContainingMouse.putAndTriggerTraps(name, value); }
383 public String toString() { return "SimpleMessage [name=" + name + ", value=" + value + "]"; }
388 // Default PixelBuffer implementation /////////////////////////////////////////////////////////
390 public static abstract class DoubleBufferedSurface extends Surface {
392 public DoubleBufferedSurface(Box root) { super(root); }
393 PixelBuffer backbuffer = Platform.createPixelBuffer(Platform.getScreenWidth(), Platform.getScreenHeight(), this);
394 DirtyList screenDirtyRegions = new DirtyList();
396 public void drawPicture(Picture source, int dx, int dy, int cx1, int cy1, int cx2, int cy2) {
397 screenDirtyRegions.dirty(cx1, cy1, cx2 - cx1, cy2 - cy1);
398 backbuffer.drawPicture(source, dx, dy, cx1, cy1, cx2, cy2);
401 public void drawPictureAlphaOnly(Picture source, int dx, int dy, int cx1, int cy1, int cx2, int cy2, int argb) {
402 screenDirtyRegions.dirty(cx1, cy1, cx2 - cx1, cy2 - cy1);
403 backbuffer.drawPictureAlphaOnly(source, dx, dy, cx1, cy1, cx2, cy2, argb);
406 public void fillTrapezoid(int x1, int x2, int y1, int x3, int x4, int y2, int color) {
407 screenDirtyRegions.dirty(Math.min(x1, x3), y1, Math.max(x2, x4) - Math.min(x1, x3), y2 - y1);
408 backbuffer.fillTrapezoid(x1, x2, y1, x3, x4, y2, color);
411 public void render() {
416 public void render_() {
417 int[][] dirt = screenDirtyRegions.flush();
418 for(int i = 0; dirt != null && i < dirt.length; i++) {
419 if (dirt[i] == null) continue;
426 if (x+w > root.width) w = root.width - x;
427 if (y+h > root.height) h = root.height - y;
428 if (w <= 0 || h <= 0) continue;
429 blit(backbuffer, x, y, x, y, w + x, h + y);
433 /** This is how subclasses signal a 'shallow dirty', indicating that although the backbuffer is valid, the screen is not */
434 public final void Dirty(int x, int y, int w, int h) {
435 screenDirtyRegions.dirty(x, y, w, h);
439 /** copies a region from the doublebuffer to this surface */
440 public abstract void blit(PixelBuffer source, int sx, int sy, int dx, int dy, int dx2, int dy2);