author Ryan C. Gordon <>
Sun, 28 Aug 2016 13:36:13 -0400
changeset 10286 3b884985835c
parent 10176 3115d38204aa
permissions -rw-r--r--
Merge audio capture work back into the mainline.

  Simple DirectMedia Layer
  Copyright (C) 1997-2016 Sam Lantinga <>

  This software is provided 'as-is', without any express or implied
  warranty.  In no event will the authors be held liable for any damages
  arising from the use of this software.

  Permission is granted to anyone to use this software for any purpose,
  including commercial applications, and to alter it and redistribute it
  freely, subject to the following restrictions:

  1. The origin of this software must not be misrepresented; you must not
     claim that you wrote the original software. If you use this software
     in a product, an acknowledgment in the product documentation would be
     appreciated but is not required.
  2. Altered source versions must be plainly marked as such, and must not be
     misrepresented as being the original software.
  3. This notice may not be removed or altered from any source distribution.

#include "../../SDL_internal.h"


#include "SDL_cocoavideo.h"
#include "SDL_shape.h"
#include "SDL_cocoashape.h"
#include "../SDL_sysvideo.h"
#include "SDL_assert.h"

Cocoa_CreateShaper(SDL_Window* window)
    SDL_WindowData* windata = (SDL_WindowData*)window->driverdata;
    [windata->nswindow setOpaque:NO];

    [windata->nswindow setStyleMask:NSBorderlessWindowMask];

    SDL_WindowShaper* result = result = malloc(sizeof(SDL_WindowShaper));
    result->window = window;
    result->mode.mode = ShapeModeDefault;
    result->mode.parameters.binarizationCutoff = 1;
    result->userx = result->usery = 0;
    window->shaper = result;

    SDL_ShapeData* data = malloc(sizeof(SDL_ShapeData));
    result->driverdata = data;
    data->context = [windata->nswindow graphicsContext];
    data->saved = SDL_FALSE;
    data->shape = NULL;

    int resized_properly = Cocoa_ResizeWindowShape(window);
    SDL_assert(resized_properly == 0);
    return result;

typedef struct {
    NSView* view;
    NSBezierPath* path;
    SDL_Window* window;
} SDL_CocoaClosure;

ConvertRects(SDL_ShapeTree* tree, void* closure)
    SDL_CocoaClosure* data = (SDL_CocoaClosure*)closure;
    if(tree->kind == OpaqueShape) {
        NSRect rect = NSMakeRect(tree->data.shape.x,data->window->h - tree->data.shape.y,tree->data.shape.w,tree->data.shape.h);
        [data->path appendBezierPathWithRect:[data->view convertRect:rect toView:nil]];

Cocoa_SetWindowShape(SDL_WindowShaper *shaper, SDL_Surface *shape, SDL_WindowShapeMode *shape_mode)
{ @autoreleasepool
    SDL_ShapeData* data = (SDL_ShapeData*)shaper->driverdata;
    SDL_WindowData* windata = (SDL_WindowData*)shaper->window->driverdata;
    SDL_CocoaClosure closure;
    if(data->saved == SDL_TRUE) {
        [data->context restoreGraphicsState];
        data->saved = SDL_FALSE;

    /*[data->context saveGraphicsState];*/
    /*data->saved = SDL_TRUE;*/
    [NSGraphicsContext setCurrentContext:data->context];

    [[NSColor clearColor] set];
    NSRectFill([[windata->nswindow contentView] frame]);
    data->shape = SDL_CalculateShapeTree(*shape_mode,shape);

    closure.view = [windata->nswindow contentView];
    closure.path = [NSBezierPath bezierPath];
    closure.window = shaper->window;
    [closure.path addClip];

    return 0;

Cocoa_ResizeWindowShape(SDL_Window *window)
    SDL_ShapeData* data = window->shaper->driverdata;
    SDL_assert(data != NULL);
    return 0;


/* vi: set ts=4 sw=4 expandtab: */