zenilib: zenilib/jni/external/sdl/src/video/windows/SDL_windowsshape.c Source File

zenilib 0.5.3.0

- Main Page
- Modules
- Namespaces
- Classes
- Files

- File List
- File Members

All Classes Namespaces Files Functions Variables Typedefs Enumerations Enumerator Properties Friends Macros Groups Pages
SDL_windowsshape.c
Go to the documentation of this file.
1 /*
2 Simple DirectMedia Layer
3 Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
4
5 This software is provided 'as-is', without any express or implied
6 warranty. In no event will the authors be held liable for any damages
7 arising from the use of this software.
8
9 Permission is granted to anyone to use this software for any purpose,
10 including commercial applications, and to alter it and redistribute it
11 freely, subject to the following restrictions:
12
13 1. The origin of this software must not be misrepresented; you must not
14 claim that you wrote the original software. If you use this software
15 in a product, an acknowledgment in the product documentation would be
16 appreciated but is not required.
17 2. Altered source versions must be plainly marked as such, and must not be
18 misrepresented as being the original software.
19 3. This notice may not be removed or altered from any source distribution.
20 */
21 #include "SDL_config.h"
22
23 #if SDL_VIDEO_DRIVER_WINDOWS
24
25 #include "SDL_assert.h"
26 #include "SDL_windowsshape.h"
27 #include "SDL_windowsvideo.h"
28
29 SDL_WindowShaper*
30 Win32_CreateShaper(SDL_Window * window) {
31 int resized_properly;
32 SDL_WindowShaper* result = (SDL_WindowShaper *)SDL_malloc(sizeof(SDL_WindowShaper));
33 result->window = window;
34 result->mode.mode = ShapeModeDefault;
35 result->mode.parameters.binarizationCutoff = 1;
36 result->userx = result->usery = 0;
37 result->driverdata = (SDL_ShapeData*)SDL_malloc(sizeof(SDL_ShapeData));
38 ((SDL_ShapeData*)result->driverdata)->mask_tree = NULL;
39 /* Put some driver-data here. */
40 window->shaper = result;
41 resized_properly = Win32_ResizeWindowShape(window);
42 if (resized_properly != 0)
43 return NULL;
44
45 return result;
46 }
47
48 void
49 CombineRectRegions(SDL_ShapeTree* node,void* closure) {
50 HRGN mask_region = *((HRGN*)closure),temp_region = NULL;
51 if(node->kind == OpaqueShape) {
52 /* Win32 API regions exclude their outline, so we widen the region by one pixel in each direction to include the real outline. */
53 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);
54 if(mask_region != NULL) {
55 CombineRgn(mask_region,mask_region,temp_region,RGN_OR);
56 DeleteObject(temp_region);
57 }
58 else
59 *((HRGN*)closure) = temp_region;
60 }
61 }
62
63 int
64 Win32_SetWindowShape(SDL_WindowShaper *shaper,SDL_Surface *shape,SDL_WindowShapeMode *shape_mode) {
65 SDL_ShapeData *data;
66 HRGN mask_region = NULL;
67
68 if( (shaper == NULL) ||
69 (shape == NULL) ||
70 ((shape->format->Amask == 0) && (shape_mode->mode != ShapeModeColorKey)) ||
71 (shape->w != shaper->window->w) ||
72 (shape->h != shaper->window->h) ) {
73 return SDL_INVALID_SHAPE_ARGUMENT;
74 }
75
76 data = (SDL_ShapeData*)shaper->driverdata;
77 if(data->mask_tree != NULL)
78 SDL_FreeShapeTree(&data->mask_tree);
79 data->mask_tree = SDL_CalculateShapeTree(*shape_mode,shape);
80
81 SDL_TraverseShapeTree(data->mask_tree,&CombineRectRegions,&mask_region);
82 SDL_assert(mask_region != NULL);
83
84 SetWindowRgn(((SDL_WindowData *)(shaper->window->driverdata))->hwnd, mask_region, TRUE);
85
86 return 0;
87 }
88
89 int
90 Win32_ResizeWindowShape(SDL_Window *window) {
91 SDL_ShapeData* data;
92
93 if (window == NULL)
94 return -1;
95 data = (SDL_ShapeData *)window->shaper->driverdata;
96 if (data == NULL)
97 return -1;
98
99 if(data->mask_tree != NULL)
100 SDL_FreeShapeTree(&data->mask_tree);
101 if(window->shaper->hasshape == SDL_TRUE) {
102 window->shaper->userx = window->x;
103 window->shaper->usery = window->y;
104 SDL_SetWindowPosition(window,-1000,-1000);
105 }
106
107 return 0;
108 }
109
110 #endif /* SDL_VIDEO_DRIVER_WINDOWS */
SDL_FreeShapeTree
void SDL_FreeShapeTree(SDL_ShapeTree **shape_tree)
Definition: SDL_shape.c:223
SDL_CalculateShapeTree
SDL_ShapeTree * SDL_CalculateShapeTree(SDL_WindowShapeMode mode, SDL_Surface *shape)
Definition: SDL_shape.c:196
Win32_ResizeWindowShape
int Win32_ResizeWindowShape(SDL_Window *window)
SDL_Window::w
int w
Definition: SDL_sysvideo.h:78
NULL
#define NULL
Definition: ftobjs.h:61
SDL_Surface::h
int h
Definition: SDL_surface.h:73
SDL_Window::x
int x
Definition: SDL_sysvideo.h:77
SDL_WindowShaper::hasshape
SDL_bool hasshape
Definition: SDL_sysvideo.h:50
SDL_TRUE
Definition: SDL_stdinc.h:119
SDL_Surface
A collection of pixels used in software blitting.
Definition: SDL_surface.h:69
SDL_WindowShaper::driverdata
void * driverdata
Definition: SDL_sysvideo.h:52
ShapeModeColorKey
A color key is applied.
Definition: SDL_shape.h:87
OpaqueShape
Definition: SDL_shape_internals.h:47
SDL_ShapeTree::data
SDL_ShapeUnion data
Definition: SDL_shape_internals.h:51
Win32_CreateShaper
SDL_WindowShaper * Win32_CreateShaper(SDL_Window *window)
SDL_ShapeData
Definition: SDL_cocoashape.h:32
SDL_Surface::w
int w
Definition: SDL_surface.h:73
if
if(!yyg->yy_init)
Definition: glslang_lex.cpp:1037
SDL_WindowShaper
Definition: SDL_sysvideo.h:38
SDL_config.h
SDL_WindowData
Definition: SDL_androidwindow.h:33
SDL_INVALID_SHAPE_ARGUMENT
#define SDL_INVALID_SHAPE_ARGUMENT
Definition: SDL_shape.h:43
SDL_WindowShaper::mode
SDL_WindowShapeMode mode
Definition: SDL_sysvideo.h:47
result
GLuint64EXT * result
Definition: glew.h:12708
data
GLint GLenum GLsizei GLsizei GLsizei GLint GLsizei const GLvoid * data
Definition: gl2ext.h:848
SDL_Window::shaper
SDL_WindowShaper * shaper
Definition: SDL_sysvideo.h:95
SDL_WindowShaper::window
SDL_Window * window
Definition: SDL_sysvideo.h:41
SDL_ShapeData::mask_tree
SDL_ShapeTree * mask_tree
Definition: SDL_windowsshape.h:33
ShapeModeDefault
The default mode, a binarized alpha cutoff of 1.
Definition: SDL_shape.h:81
SDL_malloc
DECLSPEC void *SDLCALL SDL_malloc(size_t size)
SDL_WindowShapeMode::parameters
SDL_WindowShapeParams parameters
Window-shape parameters.
Definition: SDL_shape.h:104
SDL_Window::y
int y
Definition: SDL_sysvideo.h:77
SDL_Rect::x
int x
Definition: SDL_rect.h:65
SDL_WindowShaper::userx
Uint32 userx
Definition: SDL_sysvideo.h:44
SDL_WindowShaper::usery
Uint32 usery
Definition: SDL_sysvideo.h:44
SDL_Rect::w
int w
Definition: SDL_rect.h:66
SDL_Window::h
int h
Definition: SDL_sysvideo.h:78
SDL_assert
#define SDL_assert(condition)
Definition: SDL_assert.h:159
SDL_Surface::format
SDL_PixelFormat * format
Definition: SDL_surface.h:72
SDL_ShapeUnion::shape
SDL_Rect shape
Definition: SDL_shape_internals.h:44
SDL_SetWindowPosition
DECLSPEC void SDLCALL SDL_SetWindowPosition(SDL_Window *window, int x, int y)
Set the position of a window.
Definition: SDL_video.c:1535
Win32_SetWindowShape
int Win32_SetWindowShape(SDL_WindowShaper *shaper, SDL_Surface *shape, SDL_WindowShapeMode *shape_mode)
SDL_Rect::h
int h
Definition: SDL_rect.h:66
SDL_Window
Definition: SDL_sysvideo.h:71
SDL_TraverseShapeTree
void SDL_TraverseShapeTree(SDL_ShapeTree *tree, SDL_TraversalFunction function, void *closure)
Definition: SDL_shape.c:209
SDL_ShapeTree
Definition: SDL_shape_internals.h:49
SDL_WindowShapeParams::binarizationCutoff
Uint8 binarizationCutoff
a cutoff alpha value for binarization of the window shape&#39;s alpha channel.
Definition: SDL_shape.h:95
SDL_WindowShapeMode
A struct that tags the SDL_WindowShapeParams union with an enum describing the type of its contents...
Definition: SDL_shape.h:100
SDL_PixelFormat::Amask
Uint32 Amask
Definition: SDL_pixels.h:282
SDL_Window::driverdata
void * driverdata
Definition: SDL_sysvideo.h:99
SDL_ShapeTree::kind
SDL_ShapeKind kind
Definition: SDL_shape_internals.h:50
SDL_WindowShapeMode::mode
WindowShapeMode mode
The mode of these window-shape parameters.
Definition: SDL_shape.h:102
SDL_windowsshape.h
SDL_windowsvideo.h
SDL_Rect::y
int y
Definition: SDL_rect.h:65
TRUE
#define TRUE
Definition: ftobjs.h:53
SDL_assert.h