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 public Box root; ///< The Box at the root of this surface
46 public String cursor = "default"; ///< The active cursor to switch to when syncCursor() is called
47 public int mousex; ///< x position of the mouse, in Scheduler-time
48 public int mousey; ///< y position of the mouse, in Scheduler-time
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 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, root);
92 else if (button == 2) new SimpleMessage("_Press2", T, root);
93 else if (button == 3) {
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, root);
112 else if (button == 2) new SimpleMessage("_Release2", T, root);
113 else if (button == 3) new SimpleMessage("_Release3", T, root);
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, root);
122 else if (button == 2) new SimpleMessage("_Click2", T, root);
123 else if (button == 3) new SimpleMessage("_Click3", T, root);
124 if (Platform.needsAutoDoubleClick()) {
125 long now = System.currentTimeMillis();
126 if (lastClickButton == button && now - lastClickTime < 350) DoubleClick(button);
127 lastClickButton = button;
132 /** we enqueue ourselves in the Scheduler when we have a Move message to deal with */
133 public void perform() {
134 if (mousex == newmousex && mousey == newmousey) return;
135 int oldmousex = mousex; mousex = newmousex;
136 int oldmousey = mousey; mousey = newmousey;
137 String oldcursor = cursor; cursor = "default";
138 // Root gets motion events outside itself (if trapped)
139 if (!root.inside(oldmousex, oldmousey) && !root.inside(mousex, mousey) && (button1 || button2 || button3))
141 root.putAndTriggerTraps("_Move", T);
143 Log.log(Surface.class, "Exception thrown from Move message handler");
146 if (!cursor.equals(oldcursor)) syncCursor();
150 * Notify XWT that the mouse has moved. If the mouse leaves the
151 * surface, but the host windowing system does not provide its new
152 * position (for example, a Java MouseListener.mouseExited()
153 * message), the subclass should use (-1,-1).
155 protected final void Move(final int newmousex, final int newmousey) {
156 this.newmousex = newmousex;
157 this.newmousey = newmousey;
161 private Scheduler.Task nextSizeChange = null;
162 // FEATURE: can we avoid creating objects here?
163 /** subclasses should invoke this method when the user resizes the window */
164 protected final void SizeChange(final int width, final int height) {
165 if (root.maxwidth == width && root.maxheight == height) return;
166 nextSizeChange = new Scheduler.Task() { public void perform() {
167 if (nextSizeChange != this) return;
168 // dirty the place where the scar used to be
169 root.dirty(0, root.maxheight - Main.scarImage.height, Main.scarImage.width, Main.scarImage.height);
170 root.setMaxWidth(JS.N(width));
171 root.setMaxHeight(JS.N(height));
172 nextSizeChange = null;
175 Scheduler.addAtFront(nextSizeChange);
179 // FEATURE: can we avoid creating objects here?
180 protected final void PosChange(final int x, final int y) {
181 Scheduler.add(new Scheduler.Task() { public void perform() throws JSExn {
184 root.putAndTriggerTraps("PosChange", T);
188 private final String[] doubleClick = new String[] { null, "_DoubleClick1", "_DoubleClick2", "_DoubleClick3" };
189 protected final void DoubleClick(int button) { new SimpleMessage(doubleClick[button], T, root); }
190 protected final void KeyPressed(String key) { new SimpleMessage("_KeyPressed", key, root); }
191 protected final void KeyReleased(String key) { new SimpleMessage("_KeyReleased", key, root); }
192 protected final void Close() { new SimpleMessage("Close", T, root); }
193 protected final void Minimized(boolean b) { minimized = b; new SimpleMessage("Minimized", b ? T : F, root); }
194 protected final void Maximized(boolean b) { maximized = b; new SimpleMessage("Maximized", b ? T : F, root); }
195 protected final void Focused(boolean b) { new SimpleMessage("Focused", b ? T : F, root); }
196 public static void Refresh() { needRender = true; Scheduler.add(new Scheduler.Task() { public void perform() { } }); }
198 public static boolean needRender = false;
199 public static final Scheduler.Task renderAll = new Scheduler.Task() {
200 public void perform() {
201 for(int i=0; i<allSurfaces.size(); i++) {
202 Surface s = ((Surface)allSurfaces.elementAt(i));
210 public final void setMaximized(boolean b) { if (b != maximized) _setMaximized(maximized = b); }
211 public final void setMinimized(boolean b) { if (b != minimized) _setMinimized(minimized = b); }
214 // Other Methods ///////////////////////////////////////////////////////////////////////////////
216 /** Indicates that the Surface is no longer needed */
217 public final void dispose(boolean quitIfAllSurfacesGone) {
218 if (Log.on) Log.log(this, "disposing " + this);
219 allSurfaces.removeElement(this);
221 if (allSurfaces.size() == 0) {
222 if (Log.on) Log.log(this, "exiting because last surface was destroyed");
227 public void dirty(int x, int y, int w, int h) {
228 dirtyRegions.dirty(x, y, w, h);
232 public static Surface fromBox(Box b) {
233 for(int i=0; i<allSurfaces.size(); i++) {
234 Surface s = (Surface)allSurfaces.elementAt(i);
235 if (s.root == b) return s;
240 public Surface(Box root) {
242 root.setMaxWidth(JS.N(Math.min(Platform.getScreenWidth(), root.maxwidth)));
243 root.setMaxHeight(JS.N(Math.min(Platform.getScreenHeight(), root.maxheight)));
244 Surface old = fromBox(root);
245 if (old != null) old.dispose(false);
246 else root.removeSelf();
250 private static VectorGraphics.Affine identity = VectorGraphics.Affine.identity();
252 /** runs the prerender() and render() pipelines in the root Box to regenerate the backbuffer, then blits it to the screen */
253 public synchronized void render() {
254 // dirty the place where the scar used to be in case the root window size was programmatically changed
255 if (root.maxwidth != root.width || root.maxheight != root.height)
256 root.dirty(0, root.height - Main.scarImage.height, Main.scarImage.width, Main.scarImage.height);
258 // make sure the root is properly sized
262 root.resize(root.x, root.y, root.maxwidth, root.maxheight);
263 root.resize_children();
264 _setSize(root.width, root.height);
265 String oldcursor = cursor;
267 root.putAndTriggerTrapsAndCatchExceptions("_Move", JS.T);
268 if (!cursor.equals(oldcursor)) syncCursor();
271 int[][] dirt = dirtyRegions.flush();
272 for(int i = 0; dirt != null && i < dirt.length; i++) {
273 if (dirt[i] == null) continue;
274 int x = dirt[i][0], y = dirt[i][1], w = dirt[i][2], h = dirt[i][3];
277 if (x+w > root.width) w = root.width - x;
278 if (y+h > root.height) h = root.height - y;
279 if (w <= 0 || h <= 0) continue;
281 root.render(0, 0, x, y, x + w, y + h, this, identity);
282 drawPicture(Main.scarImage, 0, root.height - Main.scarImage.height, x, y, w, h);
286 // x,y,w,h is only partially reconstructed, so we must be careful not to re-blit it
287 dirtyRegions.dirty(x, y, w, h);
289 // put back all the dirty regions we haven't yet processed (including the current one)
290 for(int j=i; j<dirt.length; j++)
292 dirtyRegions.dirty(dirt[j][0], dirt[j][1], dirt[j][2], dirt[j][3]);
299 // FEATURE: reinstate recycler
300 public class SimpleMessage implements Scheduler.Task {
302 private Box boxContainingMouse;
303 private Object value;
306 SimpleMessage(String name, Object value, Box boxContainingMouse) {
307 this.boxContainingMouse = boxContainingMouse;
313 public void perform() {
314 if (name.equals("_KeyPressed")) {
315 String value = (String)this.value;
316 if (value.toLowerCase().endsWith("shift")) shift = true; else if (shift) value = value.toUpperCase();
317 if (value.toLowerCase().equals("alt")) alt = true; else if (alt) value = "A-" + value;
318 if (value.toLowerCase().endsWith("control")) control = true; else if (control) value = "C-" + value;
319 if (value.equals("C-v") || value.equals("A-v")) Platform.clipboardReadEnabled = true;
320 } else if (name.equals("_KeyReleased")) {
321 String value = (String)this.value;
322 if (value.toLowerCase().equals("alt")) alt = false;
323 else if (value.toLowerCase().equals("control")) control = false;
324 else if (value.toLowerCase().equals("shift")) shift = false;
327 boxContainingMouse.putAndTriggerTraps(name, value);
329 Log.log(Surface.class, "Exception thrown from "+name+" handler");
332 Platform.clipboardReadEnabled = false;
335 public String toString() { return "SimpleMessage [name=" + name + ", value=" + value + "]"; }
340 // Default PixelBuffer implementation /////////////////////////////////////////////////////////
342 public static abstract class DoubleBufferedSurface extends Surface {
344 public DoubleBufferedSurface(Box root) { super(root); }
345 PixelBuffer backbuffer = Platform.createPixelBuffer(Platform.getScreenWidth(), Platform.getScreenHeight(), this);
346 DirtyList screenDirtyRegions = new DirtyList();
348 public void drawPicture(Picture source, int dx, int dy, int cx1, int cy1, int cx2, int cy2) {
349 screenDirtyRegions.dirty(cx1, cy1, cx2 - cx1, cy2 - cy1);
350 backbuffer.drawPicture(source, dx, dy, cx1, cy1, cx2, cy2);
353 public void drawGlyph(Font.Glyph source, int dx, int dy, int cx1, int cy1, int cx2, int cy2, int argb) {
354 screenDirtyRegions.dirty(cx1, cy1, cx2 - cx1, cy2 - cy1);
355 backbuffer.drawGlyph(source, dx, dy, cx1, cy1, cx2, cy2, argb);
358 public void fillTrapezoid(int x1, int x2, int y1, int x3, int x4, int y2, int color) {
359 screenDirtyRegions.dirty(Math.min(x1, x3), y1, Math.max(x2, x4) - Math.min(x1, x3), y2 - y1);
360 backbuffer.fillTrapezoid(x1, x2, y1, x3, x4, y2, color);
363 public void render_() { render(); }
364 public void render() {
367 int[][] dirt = screenDirtyRegions.flush();
368 for(int i = 0; dirt != null && i < dirt.length; i++) {
369 if (dirt[i] == null) continue;
376 if (x+w > root.width) w = root.width - x;
377 if (y+h > root.height) h = root.height - y;
378 if (w <= 0 || h <= 0) continue;
380 blit(backbuffer, x, y, x, y, w + x, h + y);
384 /** This is how subclasses signal a 'shallow dirty', indicating that although the backbuffer is valid, the screen is not */
385 public final void Dirty(int x, int y, int w, int h) {
386 screenDirtyRegions.dirty(x, y, w, h);
390 public void dirty(int x, int y, int w, int h) {
391 screenDirtyRegions.dirty(x, y, w, h);
392 super.dirty(x, y, w, h);
395 /** copies a region from the doublebuffer to this surface */
396 public abstract void blit(PixelBuffer source, int sx, int sy, int dx, int dy, int dx2, int dy2);