Mercurial > sdl-ios-xcode

annotate src/video/windows/SDL_windowsshape.c @ 5083:25d4feb7c127

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Renamed SDL_keysym to SDL_KeySym Renamed SDL_scancode to SDL_ScanCode Added #defines to SDL_compat.h
author krogoway
date Mon, 24 Jan 2011 13:47:35 -0600
parents e8916fe9cfc8
children
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
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
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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 <stdio.h>
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24 #include "SDL_assert.h"
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25 #include "SDL_windowsshape.h"
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26 #include "SDL_windowsvideo.h"
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27
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28 SDL_WindowShaper*
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29 Win32_CreateShaper(SDL_Window * window) {
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30 int resized_properly;
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31 SDL_WindowShaper* result = (SDL_WindowShaper *)SDL_malloc(sizeof(SDL_WindowShaper));
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32 result->window = window;
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33 result->mode.mode = ShapeModeDefault;
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34 result->mode.parameters.binarizationCutoff = 1;
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35 result->userx = result->usery = 0;
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36 result->driverdata = (SDL_ShapeData*)SDL_malloc(sizeof(SDL_ShapeData));
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37 ((SDL_ShapeData*)result->driverdata)->mask_tree = NULL;
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38 //Put some driver-data here.
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39 window->shaper = result;
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40 resized_properly = Win32_ResizeWindowShape(window);
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41 if (resized_properly != 0)
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42 return NULL;
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43
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44 return result;
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45 }
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46
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47 void
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48 CombineRectRegions(SDL_ShapeTree* node,void* closure) {
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49 HRGN mask_region = *((HRGN*)closure),temp_region = NULL;
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50 if(node->kind == OpaqueShape) {
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51 //Win32 API regions exclude their outline, so we widen the region by one pixel in each direction to include the real outline.
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52 temp_region = CreateRectRgn(node->data.shape.x,node->data.shape.y,node->data.shape.x + node->data.shape.w + 1,node->data.shape.y + node->data.shape.h + 1);
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53 if(mask_region != NULL) {
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54 CombineRgn(mask_region,mask_region,temp_region,RGN_OR);
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55 DeleteObject(temp_region);
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56 }
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57 else
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58 *((HRGN*)closure) = temp_region;
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59 }
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60 }
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61
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62 int
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63 Win32_SetWindowShape(SDL_WindowShaper *shaper,SDL_Surface *shape,SDL_WindowShapeMode *shape_mode) {
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64 SDL_ShapeData *data;
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65 HRGN mask_region = NULL;
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66
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67 if (shaper == NULL || shape == NULL)
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68 return SDL_INVALID_SHAPE_ARGUMENT;
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69 if(shape->format->Amask == 0 && shape_mode->mode != ShapeModeColorKey || shape->w != shaper->window->w || shape->h != shaper->window->h)
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70 return SDL_INVALID_SHAPE_ARGUMENT;
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71
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72 data = (SDL_ShapeData*)shaper->driverdata;
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73 if(data->mask_tree != NULL)
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74 SDL_FreeShapeTree(&data->mask_tree);
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75 data->mask_tree = SDL_CalculateShapeTree(*shape_mode,shape);
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76
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77 SDL_TraverseShapeTree(data->mask_tree,&CombineRectRegions,&mask_region);
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78 SDL_assert(mask_region != NULL);
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79
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80 SetWindowRgn(((SDL_WindowData *)(shaper->window->driverdata))->hwnd, mask_region, TRUE);
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82 return 0;
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83 }
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84
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85 int
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86 Win32_ResizeWindowShape(SDL_Window *window) {
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87 SDL_ShapeData* data;
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88
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89 if (window == NULL)
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90 return -1;
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91 data = (SDL_ShapeData *)window->shaper->driverdata;
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92 if (data == NULL)
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93 return -1;
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95 if(data->mask_tree != NULL)
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96 SDL_FreeShapeTree(&data->mask_tree);
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97 if(window->shaper->hasshape == SDL_TRUE) {
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98 window->shaper->userx = window->x;
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99 window->shaper->usery = window->y;
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100 SDL_SetWindowPosition(window,-1000,-1000);
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101 }
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103 return 0;
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104 }