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annotate src/video/x11/SDL_x11shape.c @ 4833:34fb492cefe3

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Shaped windows for Cocoa build and testshape runs, but the actual shaping doesn't work. Something, however, is definitely happening, because we get the backgrounds drawn in two different colors.
author egottlieb
date Thu, 05 Aug 2010 01:03:24 -0400
parents 0c82f20327ec
children 05d172e92b52
rev   line source
4777
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 2010 Eli Gottlieb
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4
6e03d73054d7 Fixed names of driver-specific implementation files.
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5 This library is free software; you can redistribute it and/or
6e03d73054d7 Fixed names of driver-specific implementation files.
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6 modify it under the terms of the GNU Lesser General Public
6e03d73054d7 Fixed names of driver-specific implementation files.
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7 License as published by the Free Software Foundation; either
6e03d73054d7 Fixed names of driver-specific implementation files.
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8 version 2.1 of the License, or (at your option) any later version.
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9
6e03d73054d7 Fixed names of driver-specific implementation files.
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10 This library is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
6e03d73054d7 Fixed names of driver-specific implementation files.
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
6e03d73054d7 Fixed names of driver-specific implementation files.
Eli Gottlieb <eligottlieb@gmail.com>
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13 Lesser General Public License for more details.
6e03d73054d7 Fixed names of driver-specific implementation files.
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14
6e03d73054d7 Fixed names of driver-specific implementation files.
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15 You should have received a copy of the GNU Lesser General Public
6e03d73054d7 Fixed names of driver-specific implementation files.
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16 License along with this library; if not, write to the Free Software
6e03d73054d7 Fixed names of driver-specific implementation files.
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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18
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19 Eli Gottlieb
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20 eligottlieb@gmail.com
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21 */
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22
4832
0c82f20327ec Correcting minor bugs and adding assertions to help me track down a NULL pointer bug in Cocoa code.
egottlieb
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23 #include "SDL_assert.h"
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24 #include "SDL_x11video.h"
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25 #include "SDL_x11shape.h"
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26 #include "SDL_x11window.h"
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27
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329708ffe2a7 Rejiggering the way shaped windows are created as preparation for OS X implementation. Fixed overdrive bug in test program that appears to have been introduced by someone other than myself.
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28 SDL_Window* X11_CreateShapedWindow(const char *title,unsigned int x,unsigned int y,unsigned int w,unsigned int h,Uint32 flags) {
329708ffe2a7 Rejiggering the way shaped windows are created as preparation for OS X implementation. Fixed overdrive bug in test program that appears to have been introduced by someone other than myself.
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29 return SDL_CreateWindow(title,x,y,w,h,flags);
329708ffe2a7 Rejiggering the way shaped windows are created as preparation for OS X implementation. Fixed overdrive bug in test program that appears to have been introduced by someone other than myself.
Eli Gottlieb <eligottlieb@gmail.com>
parents: 4807
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30 }
329708ffe2a7 Rejiggering the way shaped windows are created as preparation for OS X implementation. Fixed overdrive bug in test program that appears to have been introduced by someone other than myself.
Eli Gottlieb <eligottlieb@gmail.com>
parents: 4807
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31
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32 SDL_WindowShaper* X11_CreateShaper(SDL_Window* window) {
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33 SDL_WindowShaper* result = NULL;
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34
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35 #if SDL_VIDEO_DRIVER_X11_XSHAPE
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36 if (SDL_X11_HAVE_XSHAPE) { /* Make sure X server supports it. */
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37 result = malloc(sizeof(SDL_WindowShaper));
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38 result->window = window;
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39 result->mode.mode = ShapeModeDefault;
c9eb95f29770 Added color-key mode and redid the code to work with it.
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40 result->mode.parameters.binarizationCutoff = 1;
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41 result->usershownflag = 0;
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egottlieb
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42 SDL_ShapeData* data = SDL_malloc(sizeof(SDL_ShapeData));
4795
6f0bc179771c Numerous bug fixes that keep testeyes from crashing and dying.
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43 result->driverdata = data;
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44 data->bitmapsize = 0;
6f0bc179771c Numerous bug fixes that keep testeyes from crashing and dying.
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45 data->bitmap = NULL;
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46 window->shaper = result;
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47 int resized_properly = X11_ResizeWindowShape(window);
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egottlieb
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48 SDL_assert(resized_properly == 0);
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49 }
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50 #endif
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51
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52 return result;
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53 }
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54
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55 int X11_ResizeWindowShape(SDL_Window* window) {
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56 SDL_ShapeData* data = window->shaper->driverdata;
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egottlieb
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57 SDL_assert(data != NULL);
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58
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59 unsigned int bitmapsize = window->w / 8;
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60 if(window->w % 8 > 0)
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61 bitmapsize += 1;
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62 bitmapsize *= window->h;
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63 if(data->bitmapsize != bitmapsize || data->bitmap == NULL) {
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64 data->bitmapsize = bitmapsize;
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65 if(data->bitmap != NULL)
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66 free(data->bitmap);
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67 data->bitmap = malloc(data->bitmapsize);
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68 if(data->bitmap == NULL) {
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69 SDL_SetError("Could not allocate memory for shaped-window bitmap.");
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70 return -1;
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71 }
b6930aefd008 Finished X11 shaped-window functionality and removed ellipse+polygon rendering.
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72 }
4817
c68e7490e4cf Fixed a couple of bugs in the general and X11 shape code, and fixed a bug in testshape that was keeping it from recognizing surfaces without alpha. Thanks to Andreas's bit-bashing tip, X11 shaped windows now work entirely, AFAICT.
Eli Gottlieb <eligottlieb@gmail.com>
parents: 4809
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73 memset(data->bitmap,0,data->bitmapsize);
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74
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f14a8c05f5bb Minor bugfixes. testshape now draws a shaped window with bizarre, pixellated gashes of transparency across it, and in doing so seems to hog a system resource and slow the rest of the video system down.
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75 window->shaper->usershownflag |= window->flags & SDL_WINDOW_SHOWN;
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76
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77 return 0;
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78 }
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79
b6930aefd008 Finished X11 shaped-window functionality and removed ellipse+polygon rendering.
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80 int X11_SetWindowShape(SDL_WindowShaper *shaper,SDL_Surface *shape,SDL_WindowShapeMode *shapeMode) {
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e25ad8d97027 Ported over, to the best of my ability, the code for Win32 shaped windows and patched in the correct C syntax and coding conventions of SDL.
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81 if(shaper == NULL || shape == NULL || shaper->driverdata == NULL)
e25ad8d97027 Ported over, to the best of my ability, the code for Win32 shaped windows and patched in the correct C syntax and coding conventions of SDL.
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82 return -1;
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83
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84 #if SDL_VIDEO_DRIVER_X11_XSHAPE
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85 if(!SDL_ISPIXELFORMAT_ALPHA(SDL_MasksToPixelFormatEnum(shape->format->BitsPerPixel,shape->format->Rmask,shape->format->Gmask,shape->format->Bmask,shape->format->Amask)))
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86 return -2;
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87 if(shape->w != shaper->window->w || shape->h != shaper->window->h)
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88 return -3;
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89 SDL_ShapeData *data = shaper->driverdata;
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90
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ef8b32ef9793 Updated test code, updated win32 code a bit (still not complete, but hopefully tonight), and removed the last vestiges of ellipse and polygon drawing support.
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91 /* Assume that shaper->alphacutoff already has a value, because SDL_SetWindowShape() should have given it one. */
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c68e7490e4cf Fixed a couple of bugs in the general and X11 shape code, and fixed a bug in testshape that was keeping it from recognizing surfaces without alpha. Thanks to Andreas's bit-bashing tip, X11 shaped windows now work entirely, AFAICT.
Eli Gottlieb <eligottlieb@gmail.com>
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92 SDL_CalculateShapeBitmap(shaper->mode,shape,data->bitmap,8);
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93
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94 SDL_WindowData *windowdata = (SDL_WindowData*)(shaper->window->driverdata);
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95 Pixmap shapemask = XCreateBitmapFromData(windowdata->videodata->display,windowdata->xwindow,data->bitmap,shaper->window->w,shaper->window->h);
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96
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97 XShapeCombineMask(windowdata->videodata->display,windowdata->xwindow, ShapeBounding, 0, 0,shapemask, ShapeSet);
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98 XSync(windowdata->videodata->display,False);
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99
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100 XFreePixmap(windowdata->videodata->display,shapemask);
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101 #endif
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102
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103 return 0;
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104 }