kc3-lang/SDL/src/video/cocoa/SDL_cocoashape.m

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• Hash : 5e13087b
  Author :
  Date : 2019-01-04T22:01:14
  

  Updated copyright for 2019

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• src/video/cocoa/SDL_cocoashape.m

• /*
    Simple DirectMedia Layer
    Copyright (C) 1997-2019 Sam Lantinga <slouken@libsdl.org>
  
    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"
  
  #if SDL_VIDEO_DRIVER_COCOA
  
  #include "SDL_cocoavideo.h"
  #include "SDL_shape.h"
  #include "SDL_cocoashape.h"
  #include "../SDL_sysvideo.h"
  #include "SDL_assert.h"
  
  SDL_WindowShaper*
  Cocoa_CreateShaper(SDL_Window* window)
  {
      SDL_WindowData* windata = (SDL_WindowData*)window->driverdata;
      [windata->nswindow setOpaque:NO];
  
      [windata->nswindow setStyleMask:NSWindowStyleMaskBorderless];
  
      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;
  
  void
  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]];
      }
  }
  
  int
  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;
      SDL_TraverseShapeTree(data->shape,&ConvertRects,&closure);
      [closure.path addClip];
  
      return 0;
  }}
  
  int
  Cocoa_ResizeWindowShape(SDL_Window *window)
  {
      SDL_ShapeData* data = window->shaper->driverdata;
      SDL_assert(data != NULL);
      return 0;
  }
  
  #endif /* SDL_VIDEO_DRIVER_COCOA */
  
  /* vi: set ts=4 sw=4 expandtab: */
  

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