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 private final static boolean NANOGOAT_KEEP_ALL_METHODS = true;
17 // Static Data ////////////////////////////////////////////////////////////////////////////////
19 private static Boolean T = Boolean.TRUE;
20 private static Boolean F = Boolean.FALSE;
22 /** all instances of Surface which need to be refreshed by the Scheduler */
23 public static Vec allSurfaces = new Vec();
25 /** When set to true, render() should abort as soon as possible and restart the rendering process */
26 volatile boolean abort = false;
28 // these three variables are used to ensure that user resizes trump programmatic resizes
29 volatile boolean syncRootBoxToSurface = false;
30 volatile int pendingWidth = 0;
31 volatile int pendingHeight = 0;
33 public static boolean alt = false; ///< true iff the alt button is pressed down
34 public static boolean control = false; ///< true iff the control button is pressed down
35 public static boolean shift = false; ///< true iff the shift button is pressed down
36 public static boolean button1 = false; ///< true iff button 1 is depressed
37 public static boolean button2 = false; ///< true iff button 2 is depressed
38 public static boolean button3 = false; ///< true iff button 3 is depressed
41 // Instance Data ///////////////////////////////////////////////////////////////////////
43 public Box root; ///< The Box at the root of this surface
44 public String cursor = "default"; ///< The active cursor to switch to when syncCursor() is called
45 public int mousex; ///< x position of the mouse
46 public int mousey; ///< y position of the mouse
47 public int _mousex; ///< x position of the mouse FIXME
48 public int _mousey; ///< y position of the mouse FIXME
49 public int newmousex = -1; ///< x position of the mouse, in real time; this lets us collapse Move's
50 public int newmousey = -1; ///< y position of the mouse, in real time; this lets us collapse Move's
51 public boolean minimized = false; ///< True iff this surface is minimized, in real time
52 public boolean maximized = false; ///< True iff this surface is maximized, in real time
53 DirtyList dirtyRegions = new DirtyList(); ///< Dirty regions on the surface
55 // Used For Simulating Clicks and DoubleClicks /////////////////////////////////////////////////
57 int last_press_x = Integer.MAX_VALUE; ///< the x-position of the mouse the last time a Press message was enqueued
58 int last_press_y = Integer.MAX_VALUE; ///< the y-position of the mouse the last time a Press message was enqueued
59 static int lastClickButton = 0; ///< the last button to recieve a Click message; used for simulating DoubleClick's
60 static long lastClickTime = 0; ///< the last time a Click message was processed; used for simulating DoubleClick's
63 // Methods to be overridden by subclasses ///////////////////////////////////////////////////////
65 public abstract void toBack(); ///< should push surface to the back of the stacking order
66 public abstract void toFront(); ///< should pull surface to the front of the stacking order
67 public abstract void syncCursor(); ///< set the actual cursor to this.cursor if they do not match
68 public abstract void setInvisible(boolean b); ///< If <tt>b</tt>, make window invisible; otherwise, make it non-invisible.
69 protected abstract void _setMaximized(boolean b); ///< If <tt>b</tt>, maximize the surface; otherwise, un-maximize it.
70 protected abstract void _setMinimized(boolean b); ///< If <tt>b</tt>, minimize the surface; otherwise, un-minimize it.
71 public abstract void setLocation(); ///< Set the surface's x/y position to that of the root box
72 protected abstract void _setSize(int w, int h); ///< set the actual size of the surface
73 public abstract void setTitleBarText(String s); ///< Sets the surface's title bar text, if applicable
74 public abstract void setIcon(Picture i); ///< Sets the surface's title bar text, if applicable
75 public abstract void _dispose(); ///< Destroy the surface
76 public void setMinimumSize(int minx, int miny, boolean resizable) { }
77 protected void setSize(int w, int h) { _setSize(w, h); }
80 // Helper methods for subclasses ////////////////////////////////////////////////////////////
82 protected final void Press(final int button) {
83 last_press_x = mousex;
84 last_press_y = mousey;
86 if (button == 1) button1 = true;
87 else if (button == 2) button2 = true;
88 else if (button == 3) button3 = true;
90 if (button == 1) new Message("_Press1", T, root);
91 else if (button == 2) new Message("_Press2", T, root);
92 else if (button == 3) {
93 Scheduler.add(new Scheduler.Task() { public void perform() throws JSExn {
94 Platform.clipboardReadEnabled = true;
96 root.putAndTriggerTraps("_Press3", T);
98 Platform.clipboardReadEnabled = false;
104 protected final void Release(int button) {
105 if (button == 1) button1 = false;
106 else if (button == 2) button2 = false;
107 else if (button == 3) button3 = false;
109 if (button == 1) new Message("_Release1", T, root);
110 else if (button == 2) new Message("_Release2", T, root);
111 else if (button == 3) new Message("_Release3", T, root);
113 if (Platform.needsAutoClick() && Math.abs(last_press_x - mousex) < 5 && Math.abs(last_press_y - mousey) < 5) Click(button);
114 last_press_x = Integer.MAX_VALUE;
115 last_press_y = Integer.MAX_VALUE;
118 protected final void Click(int button) {
119 if (button == 1) new Message("_Click1", T, root);
120 else if (button == 2) new Message("_Click2", T, root);
121 else if (button == 3) new Message("_Click3", T, root);
122 if (Platform.needsAutoDoubleClick()) {
123 long now = System.currentTimeMillis();
124 if (lastClickButton == button && now - lastClickTime < 350) DoubleClick(button);
125 lastClickButton = button;
130 /** we enqueue ourselves in the Scheduler when we have a Move message to deal with */
131 private Scheduler.Task mover = new Scheduler.Task() {
132 public void perform() {
133 if (mousex == newmousex && mousey == newmousey) return;
134 int oldmousex = mousex; mousex = newmousex;
135 int oldmousey = mousey; mousey = newmousey;
136 String oldcursor = cursor; cursor = "default";
137 // Root gets motion events outside itself (if trapped)
138 if (!root.inside(oldmousex, oldmousey) && !root.inside(mousex, mousey) && (button1 || button2 || button3))
139 root.putAndTriggerTrapsAndCatchExceptions("_Move", T);
140 if (!cursor.equals(oldcursor)) syncCursor();
144 * Notify Ibex that the mouse has moved. If the mouse leaves the
145 * surface, but the host windowing system does not provide its new
146 * position (for example, a Java MouseListener.mouseExited()
147 * message), the subclass should use (-1,-1).
149 protected final void Move(final int newmousex, final int newmousey) {
150 this.newmousex = newmousex;
151 this.newmousey = newmousey;
152 Scheduler.add(mover);
155 protected final void HScroll(int pixels) { new Message("_HScroll", new Integer(pixels), root); }
156 protected final void VScroll(int pixels) { new Message("_VScroll", new Integer(pixels), root); }
157 protected final void HScroll(float lines) { new Message("_HScroll", new Float(lines), root); }
158 protected final void VScroll(float lines) { new Message("_VScroll", new Float(lines), root); }
160 /** subclasses should invoke this method when the user resizes the window */
161 protected final void SizeChange(final int width, final int height) {
162 if (pendingWidth == width && pendingHeight == height) return;
163 pendingWidth = width;
164 pendingHeight = height;
165 syncRootBoxToSurface = true;
167 Scheduler.renderAll();
170 // FEATURE: can we avoid creating objects here?
171 protected final void PosChange(final int x, final int y) {
172 Scheduler.add(new Scheduler.Task() { public void perform() throws JSExn {
175 root.putAndTriggerTrapsAndCatchExceptions("PosChange", T);
179 private final String[] doubleClick = new String[] { null, "_DoubleClick1", "_DoubleClick2", "_DoubleClick3" };
180 protected final void DoubleClick(int button) { new Message(doubleClick[button], T, root); }
181 protected final void KeyPressed(String key) { new Message("_KeyPressed", key, root); }
182 protected final void KeyReleased(String key) { new Message("_KeyReleased", key, root); }
183 protected final void Close() { new Message("Close", T, root); }
184 protected final void Minimized(boolean b) { minimized = b; new Message("Minimized", b ? T : F, root); }
185 protected final void Maximized(boolean b) { maximized = b; new Message("Maximized", b ? T : F, root); }
186 protected final void Focused(boolean b) { new Message("Focused", b ? T : F, root); }
188 private boolean scheduled = false;
189 public void Refresh() { if (!scheduled) Scheduler.add(this); scheduled = true; }
190 public void perform() { scheduled = false; Scheduler.renderAll(); }
192 public final void setMaximized(boolean b) { if (b != maximized) _setMaximized(maximized = b); }
193 public final void setMinimized(boolean b) { if (b != minimized) _setMinimized(minimized = b); }
196 // Other Methods ///////////////////////////////////////////////////////////////////////////////
198 /** Indicates that the Surface is no longer needed */
199 public final void dispose(boolean quitIfAllSurfacesGone) {
200 if (Log.on) Log.info(this, "disposing " + this);
201 allSurfaces.removeElement(this);
203 if (allSurfaces.size() == 0) {
204 if (Log.on) Log.info(this, "exiting because last surface was destroyed");
209 public void dirty(int x, int y, int w, int h) {
210 dirtyRegions.dirty(x, y, w, h);
214 public static Surface fromBox(Box b) {
215 // FIXME use a hash table here
216 for(int i=0; i<allSurfaces.size(); i++) {
217 Surface s = (Surface)allSurfaces.elementAt(i);
218 if (s.root == b) return s;
223 public Surface(Box root) {
225 root.setMaxWidth(JS.N(Math.min(Platform.getScreenWidth(), root.maxwidth)));
226 root.setMaxHeight(JS.N(Math.min(Platform.getScreenHeight(), root.maxheight)));
227 Surface old = fromBox(root);
228 if (old != null) old.dispose(false);
229 else root.removeSelf();
233 private static VectorGraphics.Affine identity = VectorGraphics.Affine.identity();
235 /** runs the prerender() and render() pipelines in the root Box to regenerate the backbuffer, then blits it to the screen */
236 public synchronized void render() {
238 // make sure the root is properly sized
242 if (syncRootBoxToSurface) {
243 root.setMaxWidth(JS.N(pendingWidth));
244 root.setMaxHeight(JS.N(pendingHeight));
245 syncRootBoxToSurface = false;
247 if (root.maxwidth != root.width || root.maxheight != root.height) {
248 // dirty the place where the scar used to be and where it is now
249 dirty(0, root.height - Main.scarImage.height, Main.scarImage.width, Main.scarImage.height);
250 dirty(0, root.maxheight - Main.scarImage.height, Main.scarImage.width, Main.scarImage.height);
252 root.resize(root.x, root.y, root.maxwidth, root.maxheight);
253 root.resize_children();
254 setSize(root.width, root.height);
255 String oldcursor = cursor;
257 root.putAndTriggerTrapsAndCatchExceptions("_Move", JS.T);
258 if (!cursor.equals(oldcursor)) syncCursor();
261 int[][] dirt = dirtyRegions.flush();
262 for(int i = 0; dirt != null && i < dirt.length; i++) {
263 if (dirt[i] == null) continue;
264 int x = dirt[i][0], y = dirt[i][1], w = dirt[i][2], h = dirt[i][3];
267 if (x+w > root.width) w = root.width - x;
268 if (y+h > root.height) h = root.height - y;
269 if (w <= 0 || h <= 0) continue;
271 root.render(0, 0, x, y, x + w, y + h, this, identity);
272 drawPicture(Main.scarImage, 0, root.height - Main.scarImage.height, x, y, x+w, y+h);
275 // x,y,w,h is only partially reconstructed, so we must be careful not to re-blit it
276 dirtyRegions.dirty(x, y, w, h);
277 // put back all the dirty regions we haven't yet processed (including the current one)
278 for(int j=i; j<dirt.length; j++)
280 dirtyRegions.dirty(dirt[j][0], dirt[j][1], dirt[j][2], dirt[j][3]);
286 // FEATURE: reinstate recycler
287 public class Message implements Scheduler.Task {
289 private Box boxContainingMouse;
290 private Object value;
293 Message(String name, Object value, Box boxContainingMouse) {
294 this.boxContainingMouse = boxContainingMouse;
300 public void perform() {
301 if (name.equals("_KeyPressed")) {
302 String value = (String)this.value;
303 if (value.toLowerCase().endsWith("shift")) shift = true; else if (shift) value = value.toUpperCase();
304 if (value.toLowerCase().equals("alt")) alt = true; else if (alt) value = "A-" + value;
305 if (value.toLowerCase().endsWith("control")) control = true; else if (control) value = "C-" + value;
306 if (value.equals("C-v") || value.equals("A-v")) Platform.clipboardReadEnabled = true;
308 } else if (name.equals("_KeyReleased")) {
309 String value = (String)this.value;
310 if (value.toLowerCase().equals("alt")) alt = false;
311 else if (value.toLowerCase().equals("control")) control = false;
312 else if (value.toLowerCase().equals("shift")) shift = false;
314 } else if (name.equals("_HScroll") || name.equals("_VScroll")) {
315 // FIXME: technically points != pixels
316 if (value instanceof Integer)
317 value = new Float(((Integer)value).intValue() * root.fontSize());
320 boxContainingMouse.putAndTriggerTrapsAndCatchExceptions(name, value);
322 Platform.clipboardReadEnabled = false;
325 public String toString() { return "Message [name=" + name + ", value=" + value + "]"; }
329 // Default PixelBuffer implementation /////////////////////////////////////////////////////////
331 public static abstract class DoubleBufferedSurface extends Surface {
333 public DoubleBufferedSurface(Box root) { super(root); }
334 PixelBuffer backbuffer = Platform.createPixelBuffer(Platform.getScreenWidth(), Platform.getScreenHeight(), this);
335 DirtyList screenDirtyRegions = new DirtyList();
337 public void drawPicture(Picture source, int dx, int dy, int cx1, int cy1, int cx2, int cy2) {
338 screenDirtyRegions.dirty(cx1, cy1, cx2 - cx1, cy2 - cy1);
339 backbuffer.drawPicture(source, dx, dy, cx1, cy1, cx2, cy2);
342 public void drawGlyph(Font.Glyph source, int dx, int dy, int cx1, int cy1, int cx2, int cy2, int argb) {
343 screenDirtyRegions.dirty(cx1, cy1, cx2 - cx1, cy2 - cy1);
344 backbuffer.drawGlyph(source, dx, dy, cx1, cy1, cx2, cy2, argb);
347 public void fillTrapezoid(int x1, int x2, int y1, int x3, int x4, int y2, int color) {
348 screenDirtyRegions.dirty(Math.min(x1, x3), y1, Math.max(x2, x4) - Math.min(x1, x3), y2 - y1);
349 backbuffer.fillTrapezoid(x1, x2, y1, x3, x4, y2, color);
352 public void render() {
355 int[][] dirt = screenDirtyRegions.flush();
356 for(int i = 0; dirt != null && i < dirt.length; i++) {
357 if (dirt[i] == null) continue;
364 if (x+w > root.width) w = root.width - x;
365 if (y+h > root.height) h = root.height - y;
366 if (w <= 0 || h <= 0) continue;
368 blit(backbuffer, x, y, x, y, w + x, h + y);
372 /** This is how subclasses signal a 'shallow dirty', indicating that although the backbuffer is valid, the screen is not */
373 public final void Dirty(int x, int y, int w, int h) {
374 screenDirtyRegions.dirty(x, y, w, h);
375 Scheduler.renderAll();
378 public void dirty(int x, int y, int w, int h) {
379 screenDirtyRegions.dirty(x, y, w, h);
380 super.dirty(x, y, w, h);
383 /** copies a region from the doublebuffer to this surface */
384 public abstract void blit(PixelBuffer source, int sx, int sy, int dx, int dy, int dx2, int dy2);