130 lines
4.1 KiB
Objective-C
130 lines
4.1 KiB
Objective-C
/*
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Simple DirectMedia Layer
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Copyright (C) 1997-2023 Sam Lantinga <slouken@libsdl.org>
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This software is provided 'as-is', without any express or implied
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warranty. In no event will the authors be held liable for any damages
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arising from the use of this software.
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Permission is granted to anyone to use this software for any purpose,
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including commercial applications, and to alter it and redistribute it
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freely, subject to the following restrictions:
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1. The origin of this software must not be misrepresented; you must not
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claim that you wrote the original software. If you use this software
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in a product, an acknowledgment in the product documentation would be
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appreciated but is not required.
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2. Altered source versions must be plainly marked as such, and must not be
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misrepresented as being the original software.
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3. This notice may not be removed or altered from any source distribution.
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*/
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#include "SDL_internal.h"
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#if SDL_VIDEO_DRIVER_COCOA
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#include "SDL_cocoavideo.h"
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#include "SDL_cocoashape.h"
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#include "../SDL_sysvideo.h"
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@implementation SDL_ShapeData
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@end
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@interface SDL_CocoaClosure : NSObject
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@property(nonatomic) NSView *view;
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@property(nonatomic) NSBezierPath *path;
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@property(nonatomic) SDL_Window *window;
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@end
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@implementation SDL_CocoaClosure
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@end
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SDL_WindowShaper *
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Cocoa_CreateShaper(SDL_Window *window)
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{
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@autoreleasepool {
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SDL_WindowShaper *result;
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SDL_ShapeData *data;
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int resized_properly;
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SDL_WindowData *windata = window->driverdata;
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result = (SDL_WindowShaper *)SDL_malloc(sizeof(SDL_WindowShaper));
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if (!result) {
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SDL_OutOfMemory();
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return NULL;
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}
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[windata.nswindow setOpaque:NO];
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[windata.nswindow setStyleMask:NSWindowStyleMaskBorderless];
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result->window = window;
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result->mode.mode = ShapeModeDefault;
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result->mode.parameters.binarizationCutoff = 1;
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result->userx = result->usery = 0;
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window->shaper = result;
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data = [[SDL_ShapeData alloc] init];
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data.context = [windata.nswindow graphicsContext];
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data.saved = SDL_FALSE;
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data.shape = NULL;
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/* TODO: There's no place to release this... */
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result->driverdata = (void *)CFBridgingRetain(data);
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resized_properly = Cocoa_ResizeWindowShape(window);
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SDL_assert(resized_properly == 0);
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return result;
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}
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}
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void ConvertRects(SDL_ShapeTree *tree, void *closure)
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{
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SDL_CocoaClosure *data = (__bridge SDL_CocoaClosure *)closure;
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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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}
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}
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int Cocoa_SetWindowShape(SDL_WindowShaper *shaper, SDL_Surface *shape, SDL_WindowShapeMode *shape_mode)
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{
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@autoreleasepool {
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SDL_ShapeData *data = (__bridge SDL_ShapeData *)shaper->driverdata;
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SDL_WindowData *windata = shaper->window->driverdata;
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SDL_CocoaClosure *closure;
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if (data.saved == SDL_TRUE) {
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[data.context restoreGraphicsState];
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data.saved = SDL_FALSE;
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}
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/*[data.context saveGraphicsState];*/
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/*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.sdlContentView frame]);
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data.shape = SDL_CalculateShapeTree(*shape_mode, shape);
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closure = [[SDL_CocoaClosure alloc] init];
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closure.view = windata.sdlContentView;
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closure.path = [NSBezierPath bezierPath];
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closure.window = shaper->window;
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SDL_TraverseShapeTree(data.shape, &ConvertRects, (__bridge void *)closure);
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[closure.path addClip];
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return 0;
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}
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}
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int Cocoa_ResizeWindowShape(SDL_Window *window)
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{
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@autoreleasepool {
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SDL_ShapeData *data = (__bridge SDL_ShapeData *)window->shaper->driverdata;
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SDL_assert(data != NULL);
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return 0;
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}
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}
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#endif /* SDL_VIDEO_DRIVER_COCOA */
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