Mercurial > sdl-ios-xcode
annotate src/video/win32/SDL_win32shape.c @ 4816:eb433f0d2ac5
Added Andreas's VS2010 patch for testshape.
author | Eli Gottlieb <eligottlieb@gmail.com> |
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date | Fri, 30 Jul 2010 18:04:21 -0400 |
parents | 93402b9dd20c |
children | 55f32099a4b5 |
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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 |
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5 This library is free software; you can redistribute it and/or |
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6 modify it under the terms of the GNU Lesser General Public |
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7 License as published by the Free Software Foundation; either |
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8 version 2.1 of the License, or (at your option) any later version. |
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9 |
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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 |
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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13 Lesser General Public License for more details. |
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14 |
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15 You should have received a copy of the GNU Lesser General Public |
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16 License along with this library; if not, write to the Free Software |
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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 |
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23 #include "SDL_win32shape.h" |
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24 #include "SDL_win32video.h" |
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25 |
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26 SDL_WindowShaper* Win32_CreateShaper(SDL_Window * window) { |
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27 int resized_properly; |
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28 SDL_WindowShaper* result = (SDL_WindowShaper *)SDL_malloc(sizeof(SDL_WindowShaper)); |
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29 result->window = window; |
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30 result->mode.mode = ShapeModeDefault; |
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31 result->mode.parameters.binarizationCutoff = 1; |
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32 result->usershownflag = 0; |
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33 //Put some driver-data here. |
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34 window->shaper = result; |
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35 resized_properly = Win32_ResizeWindowShape(window); |
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36 if (resized_properly != 0) |
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37 return NULL; |
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38 |
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39 return result; |
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40 } |
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41 |
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42 void CombineRectRegions(SDL_ShapeTree* node, void* closure) { |
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43 HRGN* mask_region = (HRGN *)closure; |
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44 if(node->kind == OpaqueShape) { |
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45 HRGN temp_region = CreateRectRgn(node->data.shape.x,node->data.shape.y,node->data.shape.w,node->data.shape.h); |
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46 CombineRgn(*mask_region,*mask_region,temp_region, RGN_OR); |
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47 DeleteObject(temp_region); |
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48 } |
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49 } |
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50 |
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51 int Win32_SetWindowShape(SDL_WindowShaper *shaper,SDL_Surface *shape,SDL_WindowShapeMode *shapeMode) { |
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52 SDL_ShapeData *data; |
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53 HRGN mask_region; |
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54 SDL_WindowData *windowdata; |
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55 HWND hwnd; |
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56 |
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57 if (shaper == NULL || shape == NULL) |
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58 return SDL_INVALID_SHAPE_ARGUMENT; |
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59 if(!SDL_ISPIXELFORMAT_ALPHA(SDL_MasksToPixelFormatEnum(shape->format->BitsPerPixel,shape->format->Rmask,shape->format->Gmask,shape->format->Bmask,shape->format->Amask)) && shapeMode->mode != ShapeModeColorKey || shape->w != shaper->window->w || shape->h != shaper->window->h) |
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60 return SDL_INVALID_SHAPE_ARGUMENT; |
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61 |
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62 data = (SDL_ShapeData*)shaper->driverdata; |
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63 data->mask_tree = SDL_CalculateShapeTree(*shapeMode,shape,SDL_FALSE); |
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64 |
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65 /* |
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66 * Start with empty region |
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67 */ |
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68 mask_region = CreateRectRgn(0, 0, 0, 0); |
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69 |
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70 SDL_TraverseShapeTree(data->mask_tree,&CombineRectRegions,&mask_region); |
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71 |
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72 /* |
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73 * Set the new region mask for the window |
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74 */ |
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75 windowdata=(SDL_WindowData *)(shaper->window->driverdata); |
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76 hwnd = windowdata->hwnd; |
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77 SetWindowRgn(hwnd, mask_region, TRUE); |
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78 |
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79 return 0; |
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80 } |
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81 |
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82 int Win32_ResizeWindowShape(SDL_Window *window) { |
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83 SDL_ShapeData* data; |
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84 |
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85 if (window == NULL) |
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86 return -1; |
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87 data = (SDL_ShapeData *)window->shaper->driverdata; |
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88 if (data == NULL) |
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89 return -1; |
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90 |
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91 if(data->mask_tree != NULL) |
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92 SDL_FreeShapeTree(&data->mask_tree); |
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93 |
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94 window->shaper->usershownflag |= window->flags & SDL_WINDOW_SHOWN; |
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95 |
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96 return 0; |
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97 } |