2 SDL - Simple DirectMedia Layer
3 Copyright (C) 1997-2012 Sam Lantinga
5 This library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Library General Public
7 License as published by the Free Software Foundation; either
8 version 2 of the License, or (at your option) any later version.
10 This library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Library General Public License for more details.
15 You should have received a copy of the GNU Library General Public
16 License along with this library; if not, write to the Free
17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22 #include "SDL_config.h"
24 #include "SDL_QuartzVideo.h"
25 #include "SDL_QuartzWM.h"
28 void QZ_FreeWMCursor (_THIS, WMcursor *cursor) {
30 if ( cursor != NULL ) {
31 [ cursor->nscursor release ];
36 WMcursor* QZ_CreateWMCursor (_THIS, Uint8 *data, Uint8 *mask,
37 int w, int h, int hot_x, int hot_y) {
39 NSBitmapImageRep *imgrep;
41 unsigned char *planes[5];
43 NSAutoreleasePool *pool;
45 pool = [ [ NSAutoreleasePool alloc ] init ];
47 /* Allocate the cursor memory */
48 cursor = (WMcursor *)SDL_malloc(sizeof(WMcursor));
49 if (cursor == NULL) goto outOfMemory;
51 /* create the image representation and get the pointers to its storage */
52 imgrep = [ [ [ NSBitmapImageRep alloc ] initWithBitmapDataPlanes: NULL pixelsWide: w pixelsHigh: h bitsPerSample: 1 samplesPerPixel: 2 hasAlpha: YES isPlanar: YES colorSpaceName: NSDeviceWhiteColorSpace bytesPerRow: (w+7)/8 bitsPerPixel: 0 ] autorelease ];
53 if (imgrep == nil) goto outOfMemory;
54 [ imgrep getBitmapDataPlanes: planes ];
56 /* copy data and mask, extending the mask to all black pixels because the inversion effect doesn't work with Cocoa's alpha-blended cursors */
57 for (i = 0; i < (w+7)/8*h; i++) {
58 planes[0][i] = data[i] ^ 0xFF;
59 planes[1][i] = mask[i] | data[i];
62 /* create image and cursor */
63 img = [ [ [ NSImage alloc ] initWithSize: NSMakeSize(w, h) ] autorelease ];
64 if (img == nil) goto outOfMemory;
65 [ img addRepresentation: imgrep ];
66 if (system_version < 0x1030) { /* on 10.2, cursors must be 16*16 */
67 if (w > 16 || h > 16) { /* too big: scale it down */
68 [ img setScalesWhenResized: YES ];
72 else { /* too small (or just right): extend it (from the bottom left corner, so hot_y must be adjusted) */
75 [ img setSize: NSMakeSize(16, 16) ];
77 cursor->nscursor = [ [ NSCursor alloc ] initWithImage: img hotSpot: NSMakePoint(hot_x, hot_y) ];
78 if (cursor->nscursor == nil) goto outOfMemory;
85 if (cursor != NULL) SDL_free(cursor);
90 void QZ_UpdateCursor (_THIS) {
93 if (cursor_should_be_visible || !(SDL_GetAppState() & SDL_APPMOUSEFOCUS)) {
98 if (state != cursor_visible) {
104 cursor_visible = state;
108 BOOL QZ_IsMouseInWindow (_THIS) {
109 if (qz_window == nil || (mode_flags & SDL_FULLSCREEN)) return YES; /*fullscreen*/
111 NSPoint p = [ qz_window mouseLocationOutsideOfEventStream ];
112 p.y -= 1.0f; /* Apparently y goes from 1 to h, not from 0 to h-1 (i.e. the "location of the mouse" seems to be defined as "the location of the top left corner of the mouse pointer's hot pixel" */
113 return NSPointInRect(p, [ window_view frame ]);
117 int QZ_ShowWMCursor (_THIS, WMcursor *cursor) {
119 if ( cursor == NULL) {
120 if ( cursor_should_be_visible ) {
121 cursor_should_be_visible = NO;
122 QZ_ChangeGrabState (this, QZ_HIDECURSOR);
124 QZ_UpdateCursor(this);
127 if ( qz_window != nil && !(mode_flags & SDL_FULLSCREEN) ) {
128 [ qz_window invalidateCursorRectsForView: [ qz_window contentView ] ];
130 if ( ! cursor_should_be_visible ) {
131 cursor_should_be_visible = YES;
132 QZ_ChangeGrabState (this, QZ_SHOWCURSOR);
134 [ cursor->nscursor performSelectorOnMainThread:@selector(set) withObject:nil waitUntilDone:NO ];
135 QZ_UpdateCursor(this);
142 Coordinate conversion functions, for convenience
143 Cocoa sets the origin at the lower left corner of the window/screen
144 SDL, CoreGraphics/WindowServer, and QuickDraw use the origin at the upper left corner
145 The routines were written so they could be called before SetVideoMode() has finished;
146 this might have limited usefulness at the moment, but the extra cost is trivial.
149 /* Convert Cocoa screen coordinate to Cocoa window coordinate */
150 void QZ_PrivateGlobalToLocal (_THIS, NSPoint *p) {
152 if ( ! CGDisplayIsCaptured (display_id) )
153 *p = [ qz_window convertScreenToBase:*p ];
157 /* Convert Cocoa window coordinate to Cocoa screen coordinate */
158 void QZ_PrivateLocalToGlobal (_THIS, NSPoint *p) {
160 if ( ! CGDisplayIsCaptured (display_id) )
161 *p = [ qz_window convertBaseToScreen:*p ];
164 /* Convert SDL coordinate to Cocoa coordinate */
165 void QZ_PrivateSDLToCocoa (_THIS, NSPoint *p) {
167 if ( CGDisplayIsCaptured (display_id) ) { /* capture signals fullscreen */
169 p->y = CGDisplayPixelsHigh (display_id) - p->y;
173 *p = [ window_view convertPoint:*p toView: nil ];
174 p->y = [window_view frame].size.height - p->y;
178 /* Convert Cocoa coordinate to SDL coordinate */
179 void QZ_PrivateCocoaToSDL (_THIS, NSPoint *p) {
181 if ( CGDisplayIsCaptured (display_id) ) { /* capture signals fullscreen */
183 p->y = CGDisplayPixelsHigh (display_id) - p->y;
187 *p = [ window_view convertPoint:*p fromView: nil ];
188 p->y = [window_view frame].size.height - p->y;
192 /* Convert SDL coordinate to window server (CoreGraphics) coordinate */
193 CGPoint QZ_PrivateSDLToCG (_THIS, NSPoint *p) {
197 if ( ! CGDisplayIsCaptured (display_id) ) { /* not captured => not fullscreen => local coord */
201 QZ_PrivateSDLToCocoa (this, p);
202 QZ_PrivateLocalToGlobal (this, p);
204 height = CGDisplayPixelsHigh (display_id);
205 p->y = height - p->y;
214 #if 0 /* Dead code */
215 /* Convert window server (CoreGraphics) coordinate to SDL coordinate */
216 void QZ_PrivateCGToSDL (_THIS, NSPoint *p) {
218 if ( ! CGDisplayIsCaptured (display_id) ) { /* not captured => not fullscreen => local coord */
222 /* Convert CG Global to Cocoa Global */
223 height = CGDisplayPixelsHigh (display_id);
224 p->y = height - p->y;
226 QZ_PrivateGlobalToLocal (this, p);
227 QZ_PrivateCocoaToSDL (this, p);
230 #endif /* Dead code */
232 void QZ_PrivateWarpCursor (_THIS, int x, int y) {
236 p = NSMakePoint (x, y);
237 cgp = QZ_PrivateSDLToCG (this, &p);
239 /* this is the magic call that fixes cursor "freezing" after warp */
240 CGAssociateMouseAndMouseCursorPosition (0);
241 CGWarpMouseCursorPosition (cgp);
242 if (grab_state != QZ_INVISIBLE_GRAB) { /* can't leave it disassociated? */
243 CGAssociateMouseAndMouseCursorPosition (1);
245 SDL_PrivateAppActive (QZ_IsMouseInWindow (this), SDL_APPMOUSEFOCUS);
248 void QZ_WarpWMCursor (_THIS, Uint16 x, Uint16 y) {
250 /* Only allow warping when in foreground */
251 if ( ! [ NSApp isActive ] )
254 /* Do the actual warp */
255 if (grab_state != QZ_INVISIBLE_GRAB) QZ_PrivateWarpCursor (this, x, y);
257 /* Generate the mouse moved event */
258 SDL_PrivateMouseMotion (0, 0, x, y);
261 void QZ_MoveWMCursor (_THIS, int x, int y) { }
262 void QZ_CheckMouseMode (_THIS) { }
264 void QZ_SetCaption (_THIS, const char *title, const char *icon) {
266 if ( qz_window != nil ) {
268 if ( title != NULL ) {
269 string = [ [ NSString alloc ] initWithUTF8String:title ];
270 [ qz_window setTitle:string ];
273 if ( icon != NULL ) {
274 string = [ [ NSString alloc ] initWithUTF8String:icon ];
275 [ qz_window setMiniwindowTitle:string ];
281 void QZ_SetIcon (_THIS, SDL_Surface *icon, Uint8 *mask)
283 NSBitmapImageRep *imgrep;
285 SDL_Surface *mergedSurface;
286 NSAutoreleasePool *pool;
288 SDL_bool iconSrcAlpha;
289 Uint8 iconAlphaValue;
290 int i, j, maskPitch, index;
292 pool = [ [ NSAutoreleasePool alloc ] init ];
294 imgrep = [ [ [ NSBitmapImageRep alloc ] initWithBitmapDataPlanes: NULL pixelsWide: icon->w pixelsHigh: icon->h bitsPerSample: 8 samplesPerPixel: 4 hasAlpha: YES isPlanar: NO colorSpaceName: NSDeviceRGBColorSpace bytesPerRow: 4*icon->w bitsPerPixel: 32 ] autorelease ];
295 if (imgrep == nil) goto freePool;
296 pixels = [ imgrep bitmapData ];
297 SDL_memset(pixels, 0, 4*icon->w*icon->h); /* make the background, which will survive in colorkeyed areas, completely transparent */
299 #if SDL_BYTEORDER == SDL_BIG_ENDIAN
300 #define BYTEORDER_DEPENDENT_RGBA_MASKS 0xFF000000, 0x00FF0000, 0x0000FF00, 0x000000FF
302 #define BYTEORDER_DEPENDENT_RGBA_MASKS 0x000000FF, 0x0000FF00, 0x00FF0000, 0xFF000000
304 mergedSurface = SDL_CreateRGBSurfaceFrom(pixels, icon->w, icon->h, 32, 4*icon->w, BYTEORDER_DEPENDENT_RGBA_MASKS);
305 if (mergedSurface == NULL) goto freePool;
307 /* blit, with temporarily cleared SRCALPHA flag because we want to copy, not alpha-blend */
308 iconSrcAlpha = ((icon->flags & SDL_SRCALPHA) != 0);
309 iconAlphaValue = icon->format->alpha;
310 SDL_SetAlpha(icon, 0, 255);
311 SDL_BlitSurface(icon, NULL, mergedSurface, NULL);
312 if (iconSrcAlpha) SDL_SetAlpha(icon, SDL_SRCALPHA, iconAlphaValue);
314 SDL_FreeSurface(mergedSurface);
316 /* apply mask, source alpha, and premultiply color values by alpha */
317 maskPitch = (icon->w+7)/8;
318 for (i = 0; i < icon->h; i++) {
319 for (j = 0; j < icon->w; j++) {
320 index = i*4*icon->w + j*4;
321 if (!(mask[i*maskPitch + j/8] & (128 >> j%8))) {
322 pixels[index + 3] = 0;
326 if (icon->format->Amask == 0) pixels[index + 3] = icon->format->alpha;
329 pixels[index + 3] = 255;
332 if (pixels[index + 3] < 255) {
333 pixels[index + 0] = (Uint16)pixels[index + 0]*pixels[index + 3]/255;
334 pixels[index + 1] = (Uint16)pixels[index + 1]*pixels[index + 3]/255;
335 pixels[index + 2] = (Uint16)pixels[index + 2]*pixels[index + 3]/255;
340 img = [ [ [ NSImage alloc ] initWithSize: NSMakeSize(icon->w, icon->h) ] autorelease ];
341 if (img == nil) goto freePool;
342 [ img addRepresentation: imgrep ];
343 [ NSApp setApplicationIconImage:img ];
349 int QZ_IconifyWindow (_THIS) {
351 if ( ! [ qz_window isMiniaturized ] ) {
352 [ qz_window miniaturize:nil ];
353 if ( ! [ qz_window isMiniaturized ] ) {
354 SDL_SetError ("window iconification failed");
360 SDL_SetError ("window already iconified");
366 int QZ_GetWMInfo (_THIS, SDL_SysWMinfo *info) {
367 info->nsWindowPtr = qz_window;
371 void QZ_ChangeGrabState (_THIS, int action) {
374 Figure out what the next state should be based on the action.
375 Ignore actions that can't change the current state.
377 if ( grab_state == QZ_UNGRABBED ) {
378 if ( action == QZ_ENABLE_GRAB ) {
379 if ( cursor_should_be_visible )
380 grab_state = QZ_VISIBLE_GRAB;
382 grab_state = QZ_INVISIBLE_GRAB;
385 else if ( grab_state == QZ_VISIBLE_GRAB ) {
386 if ( action == QZ_DISABLE_GRAB )
387 grab_state = QZ_UNGRABBED;
388 else if ( action == QZ_HIDECURSOR )
389 grab_state = QZ_INVISIBLE_GRAB;
392 assert( grab_state == QZ_INVISIBLE_GRAB );
394 if ( action == QZ_DISABLE_GRAB )
395 grab_state = QZ_UNGRABBED;
396 else if ( action == QZ_SHOWCURSOR )
397 grab_state = QZ_VISIBLE_GRAB;
400 /* now apply the new state */
401 if (grab_state == QZ_UNGRABBED) {
403 CGAssociateMouseAndMouseCursorPosition (1);
405 else if (grab_state == QZ_VISIBLE_GRAB) {
407 CGAssociateMouseAndMouseCursorPosition (1);
410 assert( grab_state == QZ_INVISIBLE_GRAB );
412 QZ_PrivateWarpCursor (this, SDL_VideoSurface->w / 2, SDL_VideoSurface->h / 2);
413 CGAssociateMouseAndMouseCursorPosition (0);
417 SDL_GrabMode QZ_GrabInput (_THIS, SDL_GrabMode grab_mode) {
419 int doGrab = grab_mode & SDL_GRAB_ON;
420 /*int fullscreen = grab_mode & SDL_GRAB_FULLSCREEN;*/
422 if ( this->screen == NULL ) {
423 SDL_SetError ("QZ_GrabInput: screen is NULL");
428 /*SDL_SetError ("QZ_GrabInput: video is not set, grab will take effect on mode switch"); */
429 current_grab_mode = grab_mode;
430 return grab_mode; /* Will be set later on mode switch */
433 if ( grab_mode != SDL_GRAB_QUERY ) {
435 QZ_ChangeGrabState (this, QZ_ENABLE_GRAB);
437 QZ_ChangeGrabState (this, QZ_DISABLE_GRAB);
439 current_grab_mode = doGrab ? SDL_GRAB_ON : SDL_GRAB_OFF;
440 QZ_UpdateCursor(this);
443 return current_grab_mode;