1 // Copyright 2004 Adam Megacz, see the COPYING file for licensing [GPL]
5 import org.ibex.util.*;
8 * A Surface, as described in the Ibex Reference.
10 * Platform subclasses should include an inner class subclass of
11 * Surface to return from the Platform._createSurface() method
13 public abstract class Surface extends PixelBuffer implements Scheduler.Task {
15 // Static Data ////////////////////////////////////////////////////////////////////////////////
17 private static Boolean T = Boolean.TRUE;
18 private static Boolean F = Boolean.FALSE;
20 /** all instances of Surface which need to be refreshed by the Scheduler */
21 public static Vec allSurfaces = new Vec();
23 /** When set to true, render() should abort as soon as possible and restart the rendering process */
24 volatile boolean abort = false;
26 // these three variables are used to ensure that user resizes trump programmatic resizes
27 volatile boolean syncRootBoxToSurface = false;
28 volatile int pendingWidth = 0;
29 volatile int pendingHeight = 0;
31 public static boolean alt = false; ///< true iff the alt button is pressed down
32 public static boolean control = false; ///< true iff the control button is pressed down
33 public static boolean shift = false; ///< true iff the shift button is pressed down
34 public static boolean button1 = false; ///< true iff button 1 is depressed
35 public static boolean button2 = false; ///< true iff button 2 is depressed
36 public static boolean button3 = false; ///< true iff button 3 is depressed
39 // Instance Data ///////////////////////////////////////////////////////////////////////
41 public Box root; ///< The Box at the root of this surface
42 public String cursor = "default"; ///< The active cursor to switch to when syncCursor() is called
43 public int mousex; ///< x position of the mouse
44 public int mousey; ///< y position of the mouse
45 public int _mousex; ///< x position of the mouse FIXME
46 public int _mousey; ///< y position of the mouse FIXME
47 public int newmousex = -1; ///< x position of the mouse, in real time; this lets us collapse Move's
48 public int newmousey = -1; ///< y position of the mouse, in real time; this lets us collapse Move's
49 public boolean minimized = false; ///< True iff this surface is minimized, in real time
50 public boolean maximized = false; ///< True iff this surface is maximized, in real time
51 DirtyList dirtyRegions = new DirtyList(); ///< Dirty regions on the surface
53 // Used For Simulating Clicks and DoubleClicks /////////////////////////////////////////////////
55 int last_press_x = Integer.MAX_VALUE; ///< the x-position of the mouse the last time a Press message was enqueued
56 int last_press_y = Integer.MAX_VALUE; ///< the y-position of the mouse the last time a Press message was enqueued
57 static int lastClickButton = 0; ///< the last button to recieve a Click message; used for simulating DoubleClick's
58 static long lastClickTime = 0; ///< the last time a Click message was processed; used for simulating DoubleClick's
61 // Methods to be overridden by subclasses ///////////////////////////////////////////////////////
63 public abstract void toBack(); ///< should push surface to the back of the stacking order
64 public abstract void toFront(); ///< should pull surface to the front of the stacking order
65 public abstract void syncCursor(); ///< set the actual cursor to this.cursor if they do not match
66 public abstract void setInvisible(boolean b); ///< If <tt>b</tt>, make window invisible; otherwise, make it non-invisible.
67 protected abstract void _setMaximized(boolean b); ///< If <tt>b</tt>, maximize the surface; otherwise, un-maximize it.
68 protected abstract void _setMinimized(boolean b); ///< If <tt>b</tt>, minimize the surface; otherwise, un-minimize it.
69 public abstract void setLocation(); ///< Set the surface's x/y position to that of the root box
70 protected abstract void _setSize(int w, int h); ///< set the actual size of the surface
71 public abstract void setTitleBarText(String s); ///< Sets the surface's title bar text, if applicable
72 public abstract void setIcon(Picture i); ///< Sets the surface's title bar text, if applicable
73 public abstract void _dispose(); ///< Destroy the surface
74 public void setMinimumSize(int minx, int miny, boolean resizable) { }
75 protected void setSize(int w, int h) { _setSize(w, h); }
78 // Helper methods for subclasses ////////////////////////////////////////////////////////////
80 protected final void Press(final int button) {
81 last_press_x = mousex;
82 last_press_y = mousey;
84 if (button == 1) button1 = true;
85 else if (button == 2) button2 = true;
86 else if (button == 3) button3 = true;
88 if (button == 1) new Message("_Press1", T, root);
89 else if (button == 2) new Message("_Press2", T, root);
90 else if (button == 3) {
92 Scheduler.add(new Scheduler.Task() { public void perform() throws JSExn {
93 Platform.clipboardReadEnabled = true;
95 root.putAndTriggerTraps("_Press3", T);
97 Platform.clipboardReadEnabled = false;
103 protected final void Release(int button) {
104 if (button == 1) button1 = false;
105 else if (button == 2) button2 = false;
106 else if (button == 3) button3 = false;
108 if (button == 1) new Message("_Release1", T, root);
109 else if (button == 2) new Message("_Release2", T, root);
110 else if (button == 3) new Message("_Release3", T, root);
112 if (Platform.needsAutoClick() && Math.abs(last_press_x - mousex) < 5 && Math.abs(last_press_y - mousey) < 5) Click(button);
113 last_press_x = Integer.MAX_VALUE;
114 last_press_y = Integer.MAX_VALUE;
117 protected final void Click(int button) {
118 if (button == 1) new Message("_Click1", T, root);
119 else if (button == 2) new Message("_Click2", T, root);
120 else if (button == 3) new Message("_Click3", T, root);
121 if (Platform.needsAutoDoubleClick()) {
122 long now = System.currentTimeMillis();
123 if (lastClickButton == button && now - lastClickTime < 350) DoubleClick(button);
124 lastClickButton = button;
129 /** we enqueue ourselves in the Scheduler when we have a Move message to deal with */
130 public void perform() {
131 if (mousex == newmousex && mousey == newmousey) return;
132 int oldmousex = mousex; mousex = newmousex;
133 int oldmousey = mousey; mousey = newmousey;
134 String oldcursor = cursor; cursor = "default";
135 // Root gets motion events outside itself (if trapped)
136 if (!root.inside(oldmousex, oldmousey) && !root.inside(mousex, mousey) && (button1 || button2 || button3))
137 root.putAndTriggerTrapsAndCatchExceptions("_Move", T);
138 if (!cursor.equals(oldcursor)) syncCursor();
142 * Notify Ibex that the mouse has moved. If the mouse leaves the
143 * surface, but the host windowing system does not provide its new
144 * position (for example, a Java MouseListener.mouseExited()
145 * message), the subclass should use (-1,-1).
147 protected final void Move(final int newmousex, final int newmousey) {
148 this.newmousex = newmousex;
149 this.newmousey = newmousey;
153 /** subclasses should invoke this method when the user resizes the window */
154 protected final void SizeChange(final int width, final int height) {
155 if (pendingWidth == width && pendingHeight == height) return;
156 pendingWidth = width;
157 pendingHeight = height;
158 syncRootBoxToSurface = true;
160 Scheduler.renderAll();
163 // FEATURE: can we avoid creating objects here?
164 protected final void PosChange(final int x, final int y) {
165 Scheduler.add(new Scheduler.Task() { public void perform() throws JSExn {
168 root.putAndTriggerTrapsAndCatchExceptions("PosChange", T);
172 private final String[] doubleClick = new String[] { null, "_DoubleClick1", "_DoubleClick2", "_DoubleClick3" };
173 protected final void DoubleClick(int button) { new Message(doubleClick[button], T, root); }
174 protected final void KeyPressed(String key) { new Message("_KeyPressed", key, root); }
175 protected final void KeyReleased(String key) { new Message("_KeyReleased", key, root); }
176 protected final void Close() { new Message("Close", T, root); }
177 protected final void Minimized(boolean b) { minimized = b; new Message("Minimized", b ? T : F, root); }
178 protected final void Maximized(boolean b) { maximized = b; new Message("Maximized", b ? T : F, root); }
179 protected final void Focused(boolean b) { new Message("Focused", b ? T : F, root); }
180 public void Refresh() { Scheduler.add(new Scheduler.Task() { public void perform() { } }); }
182 public final void setMaximized(boolean b) { if (b != maximized) _setMaximized(maximized = b); }
183 public final void setMinimized(boolean b) { if (b != minimized) _setMinimized(minimized = b); }
186 // Other Methods ///////////////////////////////////////////////////////////////////////////////
188 /** Indicates that the Surface is no longer needed */
189 public final void dispose(boolean quitIfAllSurfacesGone) {
190 if (Log.on) Log.info(this, "disposing " + this);
191 allSurfaces.removeElement(this);
193 if (allSurfaces.size() == 0) {
194 if (Log.on) Log.info(this, "exiting because last surface was destroyed");
199 public void dirty(int x, int y, int w, int h) {
200 dirtyRegions.dirty(x, y, w, h);
204 public static Surface fromBox(Box b) {
205 // FIXME use a hash table here
206 for(int i=0; i<allSurfaces.size(); i++) {
207 Surface s = (Surface)allSurfaces.elementAt(i);
208 if (s.root == b) return s;
213 public Surface(Box root) {
215 root.setMaxWidth(JS.N(Math.min(Platform.getScreenWidth(), root.maxwidth)));
216 root.setMaxHeight(JS.N(Math.min(Platform.getScreenHeight(), root.maxheight)));
217 Surface old = fromBox(root);
218 if (old != null) old.dispose(false);
219 else root.removeSelf();
223 private static VectorGraphics.Affine identity = VectorGraphics.Affine.identity();
225 /** runs the prerender() and render() pipelines in the root Box to regenerate the backbuffer, then blits it to the screen */
226 public synchronized void render() {
228 // make sure the root is properly sized
232 if (syncRootBoxToSurface) {
233 root.setMaxWidth(JS.N(pendingWidth));
234 root.setMaxHeight(JS.N(pendingHeight));
235 syncRootBoxToSurface = false;
237 if (root.maxwidth != root.width || root.maxheight != root.height) {
238 // dirty the place where the scar used to be and where it is now
239 dirty(0, root.height - Main.scarImage.height, Main.scarImage.width, Main.scarImage.height);
240 dirty(0, root.maxheight - Main.scarImage.height, Main.scarImage.width, Main.scarImage.height);
242 root.resize(root.x, root.y, root.maxwidth, root.maxheight);
243 root.resize_children();
244 setSize(root.width, root.height);
245 String oldcursor = cursor;
247 root.putAndTriggerTrapsAndCatchExceptions("_Move", JS.T);
248 if (!cursor.equals(oldcursor)) syncCursor();
251 int[][] dirt = dirtyRegions.flush();
252 for(int i = 0; dirt != null && i < dirt.length; i++) {
253 if (dirt[i] == null) continue;
254 int x = dirt[i][0], y = dirt[i][1], w = dirt[i][2], h = dirt[i][3];
257 if (x+w > root.width) w = root.width - x;
258 if (y+h > root.height) h = root.height - y;
259 if (w <= 0 || h <= 0) continue;
261 root.render(0, 0, x, y, x + w, y + h, this, identity);
262 drawPicture(Main.scarImage, 0, root.height - Main.scarImage.height, x, y, x+w, y+h);
265 // x,y,w,h is only partially reconstructed, so we must be careful not to re-blit it
266 dirtyRegions.dirty(x, y, w, h);
267 // put back all the dirty regions we haven't yet processed (including the current one)
268 for(int j=i; j<dirt.length; j++)
270 dirtyRegions.dirty(dirt[j][0], dirt[j][1], dirt[j][2], dirt[j][3]);
276 // FEATURE: reinstate recycler
277 public class Message implements Scheduler.Task {
279 private Box boxContainingMouse;
280 private Object value;
283 Message(String name, Object value, Box boxContainingMouse) {
284 this.boxContainingMouse = boxContainingMouse;
290 public void perform() {
291 if (name.equals("_KeyPressed")) {
292 String value = (String)this.value;
293 if (value.toLowerCase().endsWith("shift")) shift = true; else if (shift) value = value.toUpperCase();
294 if (value.toLowerCase().equals("alt")) alt = true; else if (alt) value = "A-" + value;
295 if (value.toLowerCase().endsWith("control")) control = true; else if (control) value = "C-" + value;
296 if (value.equals("C-v") || value.equals("A-v")) Platform.clipboardReadEnabled = true;
298 } else if (name.equals("_KeyReleased")) {
299 String value = (String)this.value;
300 if (value.toLowerCase().equals("alt")) alt = false;
301 else if (value.toLowerCase().equals("control")) control = false;
302 else if (value.toLowerCase().equals("shift")) shift = false;
306 boxContainingMouse.putAndTriggerTrapsAndCatchExceptions(name, value);
308 Platform.clipboardReadEnabled = false;
311 public String toString() { return "Message [name=" + name + ", value=" + value + "]"; }
315 // Default PixelBuffer implementation /////////////////////////////////////////////////////////
317 public static abstract class DoubleBufferedSurface extends Surface {
319 public DoubleBufferedSurface(Box root) { super(root); }
320 PixelBuffer backbuffer = Platform.createPixelBuffer(Platform.getScreenWidth(), Platform.getScreenHeight(), this);
321 DirtyList screenDirtyRegions = new DirtyList();
323 public void drawPicture(Picture source, int dx, int dy, int cx1, int cy1, int cx2, int cy2) {
324 screenDirtyRegions.dirty(cx1, cy1, cx2 - cx1, cy2 - cy1);
325 backbuffer.drawPicture(source, dx, dy, cx1, cy1, cx2, cy2);
328 public void drawGlyph(Font.Glyph source, int dx, int dy, int cx1, int cy1, int cx2, int cy2, int argb) {
329 screenDirtyRegions.dirty(cx1, cy1, cx2 - cx1, cy2 - cy1);
330 backbuffer.drawGlyph(source, dx, dy, cx1, cy1, cx2, cy2, argb);
333 public void fillTrapezoid(int x1, int x2, int y1, int x3, int x4, int y2, int color) {
334 screenDirtyRegions.dirty(Math.min(x1, x3), y1, Math.max(x2, x4) - Math.min(x1, x3), y2 - y1);
335 backbuffer.fillTrapezoid(x1, x2, y1, x3, x4, y2, color);
338 public void render() {
341 int[][] dirt = screenDirtyRegions.flush();
342 for(int i = 0; dirt != null && i < dirt.length; i++) {
343 if (dirt[i] == null) continue;
350 if (x+w > root.width) w = root.width - x;
351 if (y+h > root.height) h = root.height - y;
352 if (w <= 0 || h <= 0) continue;
354 blit(backbuffer, x, y, x, y, w + x, h + y);
358 /** This is how subclasses signal a 'shallow dirty', indicating that although the backbuffer is valid, the screen is not */
359 public final void Dirty(int x, int y, int w, int h) {
360 screenDirtyRegions.dirty(x, y, w, h);
361 Scheduler.renderAll();
364 public void dirty(int x, int y, int w, int h) {
365 screenDirtyRegions.dirty(x, y, w, h);
366 super.dirty(x, y, w, h);
369 /** copies a region from the doublebuffer to this surface */
370 public abstract void blit(PixelBuffer source, int sx, int sy, int dx, int dy, int dx2, int dy2);