kc3-lang/SDL/src/video/x11/SDL_x11shape.c

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• Hash : b48e54aa
  Author :
  Date : 2015-01-26T22:00:29
  

  Fixed bug 2802 - [patch] Fix android build compiling in wrong filesystem implementation Jonas Kulla The configure script didn't differentiate between Linux and Android, unconditionally compiling in the unix implementation of SDL_sysfilesystem.c. I'm probably one of the very few people building SDL for android using classic configure + standalone toolchain, so this has gone undetected all along.

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• src/video/x11/SDL_x11shape.c

• /*
    Simple DirectMedia Layer
    Copyright (C) 1997-2014 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_X11
  
  #include "SDL_assert.h"
  #include "SDL_x11video.h"
  #include "SDL_x11shape.h"
  #include "SDL_x11window.h"
  #include "../SDL_shape_internals.h"
  
  SDL_Window*
  X11_CreateShapedWindow(const char *title,unsigned int x,unsigned int y,unsigned int w,unsigned int h,Uint32 flags) {
      return SDL_CreateWindow(title,x,y,w,h,flags);
  }
  
  SDL_WindowShaper*
  X11_CreateShaper(SDL_Window* window) {
      SDL_WindowShaper* result = NULL;
      SDL_ShapeData* data = NULL;
      int resized_properly;
  
  #if SDL_VIDEO_DRIVER_X11_XSHAPE
      if (SDL_X11_HAVE_XSHAPE) {  /* Make sure X server supports it. */
          result = malloc(sizeof(SDL_WindowShaper));
          result->window = window;
          result->mode.mode = ShapeModeDefault;
          result->mode.parameters.binarizationCutoff = 1;
          result->userx = result->usery = 0;
          data = SDL_malloc(sizeof(SDL_ShapeData));
          result->driverdata = data;
          data->bitmapsize = 0;
          data->bitmap = NULL;
          window->shaper = result;
          resized_properly = X11_ResizeWindowShape(window);
          SDL_assert(resized_properly == 0);
      }
  #endif
  
      return result;
  }
  
  int
  X11_ResizeWindowShape(SDL_Window* window) {
      SDL_ShapeData* data = window->shaper->driverdata;
      unsigned int bitmapsize = window->w / 8;
      SDL_assert(data != NULL);
  
      if(window->w % 8 > 0)
          bitmapsize += 1;
      bitmapsize *= window->h;
      if(data->bitmapsize != bitmapsize || data->bitmap == NULL) {
          data->bitmapsize = bitmapsize;
          if(data->bitmap != NULL)
              free(data->bitmap);
          data->bitmap = malloc(data->bitmapsize);
          if(data->bitmap == NULL) {
              return SDL_SetError("Could not allocate memory for shaped-window bitmap.");
          }
      }
      memset(data->bitmap,0,data->bitmapsize);
  
      window->shaper->userx = window->x;
      window->shaper->usery = window->y;
      SDL_SetWindowPosition(window,-1000,-1000);
  
      return 0;
  }
  
  int
  X11_SetWindowShape(SDL_WindowShaper *shaper,SDL_Surface *shape,SDL_WindowShapeMode *shape_mode) {
      SDL_ShapeData *data = NULL;
      SDL_WindowData *windowdata = NULL;
      Pixmap shapemask;
      
      if(shaper == NULL || shape == NULL || shaper->driverdata == NULL)
          return -1;
  
  #if SDL_VIDEO_DRIVER_X11_XSHAPE
      if(shape->format->Amask == 0 && SDL_SHAPEMODEALPHA(shape_mode->mode))
          return -2;
      if(shape->w != shaper->window->w || shape->h != shaper->window->h)
          return -3;
      data = shaper->driverdata;
  
      /* Assume that shaper->alphacutoff already has a value, because SDL_SetWindowShape() should have given it one. */
      SDL_CalculateShapeBitmap(shaper->mode,shape,data->bitmap,8);
  
      windowdata = (SDL_WindowData*)(shaper->window->driverdata);
      shapemask = X11_XCreateBitmapFromData(windowdata->videodata->display,windowdata->xwindow,data->bitmap,shaper->window->w,shaper->window->h);
  
      X11_XShapeCombineMask(windowdata->videodata->display,windowdata->xwindow, ShapeBounding, 0, 0,shapemask, ShapeSet);
      X11_XSync(windowdata->videodata->display,False);
  
      X11_XFreePixmap(windowdata->videodata->display,shapemask);
  #endif
  
      return 0;
  }
  
  #endif /* SDL_VIDEO_DRIVER_X11 */
  
  

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