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annotate src/video/win32/SDL_win32shape.c @ 4852:c19c729eb201

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Added hiding-as-positioning trick and finally fixed flags.
author egottlieb
date Sun, 15 Aug 2010 21:46:04 -0400
parents 5624fb0190b5
children 661cb2f7c22a
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
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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
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.
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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_win32shape.h"
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26 #include "SDL_win32video.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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5624fb0190b5 Changed flags and positioning (for the fake-hiding) as Andreas recommended.
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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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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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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 char debug_str[200];
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50 HRGN mask_region = *((HRGN*)closure),temp_region = NULL;
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51 if(node->kind == OpaqueShape) {
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52 //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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53 /* sprintf_s(&debug_str[0],200,"x: %u y: %u, x+w: %u, y+h: %u\n",
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54 node->data.shape.x,node->data.shape.y,
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55 node->data.shape.x + node->data.shape.w,node->data.shape.y + node->data.shape.h);*/
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56 //OutputDebugStringA(debug_str);
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57 temp_region = CreateRectRgn(node->data.shape.x - 1,node->data.shape.y - 1,node->data.shape.x + node->data.shape.w + 1,node->data.shape.y + node->data.shape.h + 1);
14870d46ee2d Mostly seem to have fixed SDL_CalculateShapeTree. Mostly. There still seem to be some rendering artifacts, stepping effects, and such on Windows -- which indicates subtle logic errors in SDL_CalculateShapeTree().
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58 if(mask_region != NULL) {
14870d46ee2d Mostly seem to have fixed SDL_CalculateShapeTree. Mostly. There still seem to be some rendering artifacts, stepping effects, and such on Windows -- which indicates subtle logic errors in SDL_CalculateShapeTree().
egottlieb
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59 CombineRgn(mask_region,mask_region,temp_region,RGN_OR);
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60 DeleteObject(temp_region);
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61 }
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62 else
14870d46ee2d Mostly seem to have fixed SDL_CalculateShapeTree. Mostly. There still seem to be some rendering artifacts, stepping effects, and such on Windows -- which indicates subtle logic errors in SDL_CalculateShapeTree().
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63 *((HRGN*)closure) = temp_region;
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64 }
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65 }
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66
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67 int
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68 Win32_SetWindowShape(SDL_WindowShaper *shaper,SDL_Surface *shape,SDL_WindowShapeMode *shape_mode) {
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69 SDL_ShapeData *data;
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70 HRGN mask_region = NULL;
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71
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72 if (shaper == NULL || shape == NULL)
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73 return SDL_INVALID_SHAPE_ARGUMENT;
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74 if(shape->format->Amask == 0 && shape_mode->mode != ShapeModeColorKey || shape->w != shaper->window->w || shape->h != shaper->window->h)
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75 return SDL_INVALID_SHAPE_ARGUMENT;
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76
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77 data = (SDL_ShapeData*)shaper->driverdata;
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78 if(data->mask_tree != NULL)
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79 SDL_FreeShapeTree(&data->mask_tree);
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80 data->mask_tree = SDL_CalculateShapeTree(*shape_mode,shape);
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81
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82 SDL_TraverseShapeTree(data->mask_tree,&CombineRectRegions,&mask_region);
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83 SDL_assert(mask_region != NULL);
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84
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85 SetWindowRgn(((SDL_WindowData *)(shaper->window->driverdata))->hwnd, mask_region, TRUE);
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86
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87 return 0;
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88 }
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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parents: 4777
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89
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90 int
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91 Win32_ResizeWindowShape(SDL_Window *window) {
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92 SDL_ShapeData* data;
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93
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94 if (window == NULL)
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95 return -1;
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96 data = (SDL_ShapeData *)window->shaper->driverdata;
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97 if (data == NULL)
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98 return -1;
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99
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100 if(data->mask_tree != NULL)
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101 SDL_FreeShapeTree(&data->mask_tree);
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102 if(window->shaper->hasshape == SDL_TRUE) {
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103 window->shaper->userx = window->x;
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104 window->shaper->usery = window->y;
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105 SDL_SetWindowPosition(window,-1000,-1000);
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106 }
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107
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108 return 0;
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109 }