SDL  2.0
SDL_DirectFB_shape.c
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1 /*
2  Simple DirectMedia Layer
3  Copyright (C) 1997-2016 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_internal.h"
22 
23 #if SDL_VIDEO_DRIVER_DIRECTFB
24 
25 #include "SDL_assert.h"
26 #include "SDL_DirectFB_video.h"
27 #include "SDL_DirectFB_shape.h"
28 #include "SDL_DirectFB_window.h"
29 
30 #include "../SDL_shape_internals.h"
31 
33 DirectFB_CreateShapedWindow(const char *title,unsigned int x,unsigned int y,unsigned int w,unsigned int h,Uint32 flags) {
34  return SDL_CreateWindow(title,x,y,w,h,flags /* | SDL_DFB_WINDOW_SHAPED */);
35 }
36 
40 
41  result = malloc(sizeof(SDL_WindowShaper));
42  result->window = window;
43  result->mode.mode = ShapeModeDefault;
45  result->userx = result->usery = 0;
47  result->driverdata = data;
48  data->surface = NULL;
49  window->shaper = result;
50  int resized_properly = DirectFB_ResizeWindowShape(window);
51  SDL_assert(resized_properly == 0);
52 
53  return result;
54 }
55 
56 int
58  SDL_ShapeData* data = window->shaper->driverdata;
59  SDL_assert(data != NULL);
60 
61  if (window->x != -1000)
62  {
63  window->shaper->userx = window->x;
64  window->shaper->usery = window->y;
65  }
66  SDL_SetWindowPosition(window,-1000,-1000);
67 
68  return 0;
69 }
70 
71 int
73 
74  if(shaper == NULL || shape == NULL || shaper->driverdata == NULL)
75  return -1;
76  if(shape->format->Amask == 0 && SDL_SHAPEMODEALPHA(shape_mode->mode))
77  return -2;
78  if(shape->w != shaper->window->w || shape->h != shaper->window->h)
79  return -3;
80 
81  {
83  SDL_DFB_DEVICEDATA(display->device);
84  Uint32 *pixels;
85  Sint32 pitch;
86  Uint32 h,w;
87  Uint8 *src, *bitmap;
88  DFBSurfaceDescription dsc;
89 
90  SDL_ShapeData *data = shaper->driverdata;
91 
92  SDL_DFB_RELEASE(data->surface);
93 
94  dsc.flags = DSDESC_WIDTH | DSDESC_HEIGHT | DSDESC_PIXELFORMAT | DSDESC_CAPS;
95  dsc.width = shape->w;
96  dsc.height = shape->h;
97  dsc.caps = DSCAPS_PREMULTIPLIED;
98  dsc.pixelformat = DSPF_ARGB;
99 
100  SDL_DFB_CHECKERR(devdata->dfb->CreateSurface(devdata->dfb, &dsc, &data->surface));
101 
102  /* Assume that shaper->alphacutoff already has a value, because SDL_SetWindowShape() should have given it one. */
103  SDL_DFB_ALLOC_CLEAR(bitmap, shape->w * shape->h);
104  SDL_CalculateShapeBitmap(shaper->mode,shape,bitmap,1);
105 
106  src = bitmap;
107 
108  SDL_DFB_CHECK(data->surface->Lock(data->surface, DSLF_WRITE | DSLF_READ, (void **) &pixels, &pitch));
109 
110  h = shaper->window->h;
111  while (h--) {
112  for (w = 0; w < shaper->window->w; w++) {
113  if (*src)
114  pixels[w] = 0xFFFFFFFF;
115  else
116  pixels[w] = 0;
117  src++;
118 
119  }
120  pixels += (pitch >> 2);
121  }
122  SDL_DFB_CHECK(data->surface->Unlock(data->surface));
123  SDL_DFB_FREE(bitmap);
124 
125  /* FIXME: Need to call this here - Big ?? */
127  }
128 
129  return 0;
130 error:
131  return -1;
132 }
133 
134 #endif /* SDL_VIDEO_DRIVER_DIRECTFB */
GLsizei GLfixed GLfixed GLfixed GLfixed const GLubyte * bitmap
SDL_Window * DirectFB_CreateShapedWindow(const char *title, unsigned int x, unsigned int y, unsigned int w, unsigned int h, Uint32 flags)
SDL_WindowShaper * DirectFB_CreateShaper(SDL_Window *window)
#define SDL_DFB_FREE(x)
GLuint64EXT * result
GLint GLint GLint GLint GLint x
Definition: SDL_opengl.h:1567
static SDL_Window * window
A collection of pixels used in software blitting.
Definition: SDL_surface.h:69
GLint GLenum GLsizei GLsizei GLsizei GLint GLsizei const GLvoid * data
Definition: SDL_opengl.h:1967
GLint GLint GLsizei GLsizei GLsizei GLint GLenum GLenum const GLvoid * pixels
Definition: SDL_opengl.h:1565
#define SDL_CreateWindow
#define SDL_SHAPEMODEALPHA(mode)
Definition: SDL_shape.h:90
IDirectFBSurface * surface
uint32_t Uint32
An unsigned 32-bit integer type.
Definition: SDL_stdinc.h:159
#define SDL_DFB_RELEASE(x)
SDL_VideoDevice * device
Definition: SDL_sysvideo.h:134
SDL_WindowShapeMode mode
Definition: SDL_sysvideo.h:47
#define SDL_DFB_DEVICEDATA(dev)
GLint GLint GLint GLint GLint GLint y
Definition: SDL_opengl.h:1567
SDL_WindowShaper * shaper
Definition: SDL_sysvideo.h:102
uint8_t Uint8
An unsigned 8-bit integer type.
Definition: SDL_stdinc.h:143
SDL_Window * window
Definition: SDL_sysvideo.h:41
The default mode, a binarized alpha cutoff of 1.
Definition: SDL_shape.h:81
SDL_WindowShapeParams parameters
Window-shape parameters.
Definition: SDL_shape.h:104
int32_t Sint32
A signed 32-bit integer type.
Definition: SDL_stdinc.h:155
int DirectFB_SetWindowShape(SDL_WindowShaper *shaper, SDL_Surface *shape, SDL_WindowShapeMode *shapeMode)
#define SDL_assert(condition)
Definition: SDL_assert.h:167
#define NULL
Definition: begin_code.h:143
#define SDL_DFB_ALLOC_CLEAR(r, s)
#define SDL_DFB_CHECKERR(x...)
SDL_PixelFormat * format
Definition: SDL_surface.h:72
#define malloc
Definition: SDL_malloc.c:641
int DirectFB_ResizeWindowShape(SDL_Window *window)
SDL_VideoDisplay * SDL_GetDisplayForWindow(SDL_Window *window)
Definition: SDL_video.c:1058
void DirectFB_WM_RedrawLayout(_THIS, SDL_Window *window)
#define SDL_DFB_CHECK(x...)
The type used to identify a window.
Definition: SDL_sysvideo.h:71
Uint8 binarizationCutoff
a cutoff alpha value for binarization of the window shape&#39;s alpha channel.
Definition: SDL_shape.h:95
GLbitfield flags
#define SDL_malloc
A struct that tags the SDL_WindowShapeParams union with an enum describing the type of its contents...
Definition: SDL_shape.h:100
GLubyte GLubyte GLubyte GLubyte w
WindowShapeMode mode
The mode of these window-shape parameters.
Definition: SDL_shape.h:102
GLenum src
#define SDL_SetWindowPosition
GLfloat GLfloat GLfloat GLfloat h
void SDL_CalculateShapeBitmap(SDL_WindowShapeMode mode, SDL_Surface *shape, Uint8 *bitmap, Uint8 ppb)
Definition: SDL_shape.c:67