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annotate src/video/win32/SDL_win32shape.c @ 4813:5b4c7d7d8953

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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.
author Eli Gottlieb <eligottlieb@gmail.com>
date Wed, 28 Jul 2010 23:35:24 -0400
parents 329708ffe2a7
children 93402b9dd20c
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 <windows.h>
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24 #include "SDL_win32shape.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 SDL_WindowShaper* result = malloc(sizeof(SDL_WindowShaper));
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28 result->window = window;
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29 result->mode.mode = ShapeModeDefault;
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30 result->mode.parameters.binarizationCutoff = 1;
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31 result->usershownflag = 0;
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32 //Put some driver-data here.
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33 window->shaper = result;
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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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parents: 4809
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34 int resized_properly = Win32_ResizeWindowShape(window);
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35 assert(resized_properly == 0);
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parents: 4777
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36 return result;
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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37 }
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38
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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.
Eli Gottlieb <eligottlieb@gmail.com>
parents: 4809
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39 void CombineRectRegions(SDL_ShapeTree* node,HRGN* mask_region) {
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.
Eli Gottlieb <eligottlieb@gmail.com>
parents: 4809
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40 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.
Eli Gottlieb <eligottlieb@gmail.com>
parents: 4809
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41 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.
Eli Gottlieb <eligottlieb@gmail.com>
parents: 4809
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42 CombineRgn(*mask_region,*mask_region,temp_region, RGN_OR);
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.
Eli Gottlieb <eligottlieb@gmail.com>
parents: 4809
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43 DeleteObject(temp_region);
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.
Eli Gottlieb <eligottlieb@gmail.com>
parents: 4809
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44 }
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.
Eli Gottlieb <eligottlieb@gmail.com>
parents: 4809
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45 }
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.
Eli Gottlieb <eligottlieb@gmail.com>
parents: 4809
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46
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47 int Win32_SetWindowShape(SDL_WindowShaper *shaper,SDL_Surface *shape,SDL_WindowShapeMode *shapeMode) {
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48 assert(shaper != NULL && shape != NULL);
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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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parents: 4809
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49 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)
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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50 return SDL_INVALID_SHAPE_ARGUMENT;
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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parents: 4809
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51
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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parents: 4809
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52 SDL_ShapeData *data = (SDL_ShapeData*)shaper->driverdata;
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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parents: 4809
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53 data->mask_tree = SDL_CalculateShapeTree(shapeMode,shape,SDL_FALSE);
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54
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55 /*
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56 * Start with empty region
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parents: 4777
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57 */
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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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parents: 4809
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58 HRGN mask_region = CreateRectRgn(0, 0, 0, 0);
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59
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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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parents: 4809
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60 SDL_TraverseShapeTree(data->mask_tree,&CombineRectRegions,&mask_region);
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61
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parents: 4785
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62 /*
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63 * Set the new region mask for the window
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64 */
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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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parents: 4809
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65 SetWindowRgn((SDL_WindowData*)(shaper->window->driverdata)->hwnd, mask_region, TRUE);
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.
Eli Gottlieb <eligottlieb@gmail.com>
parents: 4809
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66
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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parents: 4809
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67 return 0;
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parents: 4777
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68 }
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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69
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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70 int Win32_ResizeWindowShape(SDL_Window *window) {
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71 SDL_ShapeData* data = window->shaper->driverdata;
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parents: 4777
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72 assert(data != NULL);
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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73
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parents: 4809
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74 if(data->mask_tree != NULL)
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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parents: 4809
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75 SDL_FreeShapeTree(&data->mask_tree);
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76
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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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77 window->shaper->usershownflag |= window->flags & SDL_WINDOW_SHOWN;
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parents: 4777
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78
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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79 return 0;
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parents: 4777
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80 }