pandory500/SDL-mirror
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Fix for bug #240

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Christian Walther contributed Cocoa cursor code.

--HG--
extra : convert_revision : svn%3Ac70aab31-4412-0410-b14c-859654838e24/trunk%401897
This commit is contained in:
Sam Lantinga 2006-06-24 17:36:55 +00:00
parent 642baf6edb
commit d856d38658
2 changed files with 60 additions and 29 deletions
Download patch file Download diff file Expand all files Collapse all files

74
src/video/quartz/SDL_QuartzWM.m
View file

@ -25,49 +25,69 @@
struct WMcursor {
Cursor curs;
NSCursor *nscursor;
};
void QZ_FreeWMCursor (_THIS, WMcursor *cursor) {
if ( cursor != NULL )
if ( cursor != NULL ) {
[ cursor->nscursor release ];
free (cursor);
}
}
/* Use the Carbon cursor routines for now */
WMcursor* QZ_CreateWMCursor (_THIS, Uint8 *data, Uint8 *mask,
int w, int h, int hot_x, int hot_y) {
WMcursor *cursor;
int row, bytes;
NSBitmapImageRep *imgrep;
NSImage *img;
unsigned char *planes[5];
int i;
NSAutoreleasePool *pool;
pool = [ [ NSAutoreleasePool alloc ] init ];
/* Allocate the cursor memory */
cursor = (WMcursor *)SDL_malloc(sizeof(WMcursor));
if ( cursor == NULL ) {
SDL_OutOfMemory();
return(NULL);
if (cursor == NULL) goto outOfMemory;
/* create the image representation and get the pointers to its storage */
imgrep = [ [ [ NSBitmapImageRep alloc ] initWithBitmapDataPlanes: NULL pixelsWide: w pixelsHigh: h bitsPerSample: 1 samplesPerPixel: 2 hasAlpha: YES isPlanar: YES colorSpaceName: NSDeviceBlackColorSpace bytesPerRow: (w+7)/8 bitsPerPixel: 0 ] autorelease ];
if (imgrep == nil) goto outOfMemory;
[ imgrep getBitmapDataPlanes: planes ];
/* copy data and mask, extending the mask to all black pixels because the inversion effect doesn't work with Cocoa's alpha-blended cursors */
for (i = 0; i < (w+7)/8*h; i++) {
planes[0][i] = data[i];
planes[1][i] = mask[i] | data[i];
}
SDL_memset(cursor, 0, sizeof(*cursor));
if (w > 16)
w = 16;
if (h > 16)
h = 16;
bytes = (w+7)/8;
for ( row=0; row<h; ++row ) {
SDL_memcpy(&cursor->curs.data[row], data, bytes);
data += bytes;
/* create image and cursor */
img = [ [ [ NSImage alloc ] initWithSize: NSMakeSize(w, h) ] autorelease ];
if (img == nil) goto outOfMemory;
[ img addRepresentation: imgrep ];
if (system_version < 0x1030) { /* on 10.2, cursors must be 16*16 */
if (w > 16 || h > 16) { /* too big: scale it down */
[ img setScalesWhenResized: YES ];
hot_x = hot_x*16/w;
hot_y = hot_y*16/h;
}
else { /* too small (or just right): extend it (from the bottom left corner, so hot_y must be adjusted) */
hot_y += 16 - h;
}
[ img setSize: NSMakeSize(16, 16) ];
}
for ( row=0; row<h; ++row ) {
SDL_memcpy(&cursor->curs.mask[row], mask, bytes);
mask += bytes;
}
cursor->curs.hotSpot.h = hot_x;
cursor->curs.hotSpot.v = hot_y;
cursor->nscursor = [ [ NSCursor alloc ] initWithImage: img hotSpot: NSMakePoint(hot_x, hot_y) ];
if (cursor->nscursor == nil) goto outOfMemory;
[ pool release ];
return(cursor);
outOfMemory:
[ pool release ];
if (cursor != NULL) SDL_free(cursor);
SDL_OutOfMemory();
return(NULL);
}
void QZ_ShowMouse (_THIS) {
@ -103,7 +123,7 @@ int QZ_ShowWMCursor (_THIS, WMcursor *cursor) {
}
}
else {
SetCursor(&cursor->curs);
[ cursor->nscursor set ];
if ( ! cursor_should_be_visible ) {
QZ_ShowMouse (this);
cursor_should_be_visible = YES;

15
test/testcursor.c
View file

@ -55,6 +55,10 @@ Uint16 cursor_mask[16]={
0xff00
};
/* another test cursor: smaller than 16x16, and with an odd height */
Uint8 small_cursor_data[11] = { 0x00, 0x18, 0x08, 0x38, 0x44, 0x54, 0x44, 0x38, 0x20, 0x20, 0x00 };
Uint8 small_cursor_mask[11] = { 0x3C, 0x3C, 0x3C, 0x7C, 0xC6, 0xC6, 0xC6, 0x7C, 0x78, 0x70, 0x70 };
/* XPM */
static const char *arrow[] = {
@ -139,7 +143,7 @@ int main(int argc, char *argv[])
{
SDL_Surface *screen;
SDL_bool quit = SDL_FALSE, first_time = SDL_TRUE;
SDL_Cursor *cursor[2];
SDL_Cursor *cursor[3];
int current;
/* Load the SDL library */
@ -170,6 +174,13 @@ int main(int argc, char *argv[])
SDL_Quit();
return(1);
}
cursor[2] = SDL_CreateCursor(small_cursor_data, small_cursor_mask,
8, 11, 3, 5);
if (cursor[2]==NULL) {
fprintf(stderr, "Couldn't initialize test cursor: %s\n",SDL_GetError());
SDL_Quit();
return(1);
}
current = 0;
SDL_SetCursor(cursor[current]);
@ -179,7 +190,7 @@ int main(int argc, char *argv[])
while (SDL_PollEvent(&event)) {
switch(event.type) {
case SDL_MOUSEBUTTONDOWN:
current = !current;
current = (current + 1)%3;
SDL_SetCursor(cursor[current]);
break;
case SDL_KEYDOWN: