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SDL_cocoashape.m
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/*
SDL - Simple DirectMedia Layer
Copyright (C) 2010 Eli Gottlieb
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
Eli Gottlieb
eligottlieb@gmail.com
*/
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#include "SDL_cocoavideo.h"
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#include "SDL_shape.h"
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#include "SDL_cocoashape.h"
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#include "../SDL_sysvideo.h"
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SDL_WindowShaper*
Cocoa_CreateShaper(SDL_Window* window) {
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SDL_WindowData* windata = (SDL_WindowData*)window->driverdata;
[windata->nswindow setOpaque:NO];
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#if MAC_OS_X_VERSION_MIN_REQUIRED >= MAC_OS_X_VERSION_10_6
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[windata->nswindow setStyleMask:NSBorderlessWindowMask];
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#endif
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SDL_WindowShaper* result = result = malloc(sizeof(SDL_WindowShaper));
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result->window = window;
result->mode.mode = ShapeModeDefault;
result->mode.parameters.binarizationCutoff = 1;
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result->userx = result->usery = 0;
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window->shaper = result;
SDL_ShapeData* data = malloc(sizeof(SDL_ShapeData));
result->driverdata = data;
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data->context = [windata->nswindow graphicsContext];
data->saved = SDL_FALSE;
data->shape = NULL;
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int resized_properly = Cocoa_ResizeWindowShape(window);
assert(resized_properly == 0);
return result;
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typedef struct {
NSView* view;
NSBezierPath* path;
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SDL_Window* window;
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} SDL_CocoaClosure;
void
ConvertRects(SDL_ShapeTree* tree,void* closure) {
SDL_CocoaClosure* data = (SDL_CocoaClosure*)closure;
if(tree->kind == OpaqueShape) {
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NSRect rect = NSMakeRect(tree->data.shape.x,data->window->h - tree->data.shape.y,tree->data.shape.w,tree->data.shape.h);
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[data->path appendBezierPathWithRect:[data->view convertRect:rect toView:nil]];
}
}
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Cocoa_SetWindowShape(SDL_WindowShaper *shaper,SDL_Surface *shape,SDL_WindowShapeMode *shape_mode) {
SDL_ShapeData* data = (SDL_ShapeData*)shaper->driverdata;
SDL_WindowData* windata = (SDL_WindowData*)shaper->window->driverdata;
SDL_CocoaClosure closure;
NSAutoreleasePool *pool = NULL;
if(data->saved == SDL_TRUE) {
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[data->context restoreGraphicsState];
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data->saved = SDL_FALSE;
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//[data->context saveGraphicsState];
//data->saved = SDL_TRUE;
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[NSGraphicsContext setCurrentContext:data->context];
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[[NSColor clearColor] set];
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NSRectFill([[windata->nswindow contentView] frame]);
data->shape = SDL_CalculateShapeTree(*shape_mode,shape);
pool = [[NSAutoreleasePool alloc] init];
closure.view = [windata->nswindow contentView];
closure.path = [[NSBezierPath bezierPath] autorelease];
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closure.window = shaper->window;
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SDL_TraverseShapeTree(data->shape,&ConvertRects,&closure);
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[closure.path addClip];
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int
Cocoa_ResizeWindowShape(SDL_Window *window) {
SDL_ShapeData* data = window->shaper->driverdata;
assert(data != NULL);
return 0;