Mercurial > sdl-ios-xcode

annotate src/video/win32/SDL_win32shape.c @ 4815:93402b9dd20c

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Added Andreas's patch to fix my silly C++-style errors.
author Eli Gottlieb <eligottlieb@gmail.com>
date Thu, 29 Jul 2010 22:57:39 -0400
parents 5b4c7d7d8953
children 55f32099a4b5
rev   line source
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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
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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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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5b4c7d7d8953 Wrote out the system for breaking shape-masks into quad-trees of rectangles, and added code to conglomerate those quad-trees of rectangles into regions for setting shapes under Win32.
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44 if(node->kind == OpaqueShape) {
5b4c7d7d8953 Wrote out the system for breaking shape-masks into quad-trees of rectangles, and added code to conglomerate those quad-trees of rectangles into regions for setting shapes under Win32.
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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);
5b4c7d7d8953 Wrote out the system for breaking shape-masks into quad-trees of rectangles, and added code to conglomerate those quad-trees of rectangles into regions for setting shapes under Win32.
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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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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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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 }