SDL  2.0
SDL_DirectFB_shape.c
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1 /*
2  Simple DirectMedia Layer
3  Copyright (C) 1997-2020 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 
36  int resized_properly;
37 
38  result = malloc(sizeof(SDL_WindowShaper));
39  result->window = window;
40  result->mode.mode = ShapeModeDefault;
41  result->mode.parameters.binarizationCutoff = 1;
42  result->userx = result->usery = 0;
43  data = SDL_malloc(sizeof(SDL_ShapeData));
44  result->driverdata = data;
45  data->surface = NULL;
46  window->shaper = result;
47  resized_properly = DirectFB_ResizeWindowShape(window);
48  SDL_assert(resized_properly == 0);
49 
50  return result;
51 }
52 
53 int
55  SDL_ShapeData* data = window->shaper->driverdata;
56  SDL_assert(data != NULL);
57 
58  if (window->x != -1000)
59  {
60  window->shaper->userx = window->x;
61  window->shaper->usery = window->y;
62  }
63  SDL_SetWindowPosition(window,-1000,-1000);
64 
65  return 0;
66 }
67 
68 int
70 
71  if(shaper == NULL || shape == NULL || shaper->driverdata == NULL)
72  return -1;
73  if(shape->format->Amask == 0 && SDL_SHAPEMODEALPHA(shape_mode->mode))
74  return -2;
75  if(shape->w != shaper->window->w || shape->h != shaper->window->h)
76  return -3;
77 
78  {
80  SDL_DFB_DEVICEDATA(display->device);
81  Uint32 *pixels;
82  Sint32 pitch;
83  Uint32 h,w;
84  Uint8 *src, *bitmap;
85  DFBSurfaceDescription dsc;
86 
87  SDL_ShapeData *data = shaper->driverdata;
88 
89  SDL_DFB_RELEASE(data->surface);
90 
91  dsc.flags = DSDESC_WIDTH | DSDESC_HEIGHT | DSDESC_PIXELFORMAT | DSDESC_CAPS;
92  dsc.width = shape->w;
93  dsc.height = shape->h;
94  dsc.caps = DSCAPS_PREMULTIPLIED;
95  dsc.pixelformat = DSPF_ARGB;
96 
97  SDL_DFB_CHECKERR(devdata->dfb->CreateSurface(devdata->dfb, &dsc, &data->surface));
98 
99  /* Assume that shaper->alphacutoff already has a value, because SDL_SetWindowShape() should have given it one. */
100  SDL_DFB_ALLOC_CLEAR(bitmap, shape->w * shape->h);
101  SDL_CalculateShapeBitmap(shaper->mode,shape,bitmap,1);
102 
103  src = bitmap;
104 
105  SDL_DFB_CHECK(data->surface->Lock(data->surface, DSLF_WRITE | DSLF_READ, (void **) &pixels, &pitch));
106 
107  h = shaper->window->h;
108  while (h--) {
109  for (w = 0; w < shaper->window->w; w++) {
110  if (*src)
111  pixels[w] = 0xFFFFFFFF;
112  else
113  pixels[w] = 0;
114  src++;
115 
116  }
117  pixels += (pitch >> 2);
118  }
119  SDL_DFB_CHECK(data->surface->Unlock(data->surface));
121 
122  /* FIXME: Need to call this here - Big ?? */
124  }
125 
126  return 0;
127 error:
128  return -1;
129 }
130 
131 #endif /* SDL_VIDEO_DRIVER_DIRECTFB */
malloc
#define malloc
Definition: SDL_qsort.c:47
Uint8
uint8_t Uint8
Definition: SDL_stdinc.h:179
Sint32
int32_t Sint32
Definition: SDL_stdinc.h:197
SDL_Surface
A collection of pixels used in software blitting.
Definition: SDL_surface.h:71
NULL
#define NULL
Definition: begin_code.h:167
SDL_VideoDisplay::device
SDL_VideoDevice * device
Definition: SDL_sysvideo.h:138
SDL_Surface::w
int w
Definition: SDL_surface.h:74
SDL_SHAPEMODEALPHA
#define SDL_SHAPEMODEALPHA(mode)
Definition: SDL_shape.h:91
SDL_GetDisplayForWindow
SDL_VideoDisplay * SDL_GetDisplayForWindow(SDL_Window *window)
Definition: SDL_video.c:1110
Uint32
uint32_t Uint32
Definition: SDL_stdinc.h:203
h
GLfloat GLfloat GLfloat GLfloat h
Definition: SDL_opengl_glext.h:1949
SDL_DirectFB_window.h
result
GLuint64EXT * result
Definition: SDL_opengl_glext.h:9435
DirectFB_CreateShaper
SDL_WindowShaper * DirectFB_CreateShaper(SDL_Window *window)
data
GLint GLenum GLsizei GLsizei GLsizei GLint GLsizei const GLvoid * data
Definition: SDL_opengl.h:1974
SDL_WindowShaper::window
SDL_Window * window
Definition: SDL_sysvideo.h:44
SDL_Window
The type used to identify a window.
Definition: SDL_sysvideo.h:75
SDL_WindowShapeMode
A struct that tags the SDL_WindowShapeParams union with an enum describing the type of its contents.
Definition: SDL_shape.h:101
SDL_ShapeData
Definition: SDL_cocoashape.h:32
SDL_WindowShapeMode::mode
WindowShapeMode mode
The mode of these window-shape parameters.
Definition: SDL_shape.h:103
SDL_Window::w
int w
Definition: SDL_sysvideo.h:81
SDL_DirectFB_shape.h
window
EGLSurface EGLNativeWindowType * window
Definition: eglext.h:1025
DirectFB_ResizeWindowShape
int DirectFB_ResizeWindowShape(SDL_Window *window)
DirectFB_SetWindowShape
int DirectFB_SetWindowShape(SDL_WindowShaper *shaper, SDL_Surface *shape, SDL_WindowShapeMode *shapeMode)
SDL_DFB_RELEASE
#define SDL_DFB_RELEASE(x)
Definition: SDL_DirectFB_video.h:78
SDL_assert.h
SDL_DFB_DEVICEDATA
#define SDL_DFB_DEVICEDATA(dev)
Definition: SDL_DirectFB_video.h:126
SDL_PixelFormat::Amask
Uint32 Amask
Definition: SDL_pixels.h:328
SDL_DFB_CHECK
#define SDL_DFB_CHECK(x...)
Definition: SDL_DirectFB_video.h:99
SDL_assert
#define SDL_assert(condition)
Definition: SDL_assert.h:169
pixels
GLint GLint GLsizei GLsizei GLsizei GLint GLenum GLenum const GLvoid * pixels
Definition: SDL_opengl.h:1572
SDL_Window::h
int h
Definition: SDL_sysvideo.h:81
SDL_WindowShaper
Definition: SDL_sysvideo.h:42
SDL_WindowShaper::mode
SDL_WindowShapeMode mode
Definition: SDL_sysvideo.h:50
SDL_DFB_ALLOC_CLEAR
#define SDL_DFB_ALLOC_CLEAR(r, s)
Definition: SDL_DirectFB_video.h:122
SDL_Surface::h
int h
Definition: SDL_surface.h:74
bitmap
GLsizei GLfixed GLfixed GLfixed GLfixed const GLubyte * bitmap
Definition: SDL_opengl_glext.h:4537
src
GLenum src
Definition: SDL_opengl_glext.h:1740
SDL_DFB_FREE
#define SDL_DFB_FREE(x)
Definition: SDL_DirectFB_video.h:79
SDL_VideoDisplay
Definition: SDL_sysvideo.h:127
DirectFB_WM_RedrawLayout
void DirectFB_WM_RedrawLayout(_THIS, SDL_Window *window)
SDL_DFB_CHECKERR
#define SDL_DFB_CHECKERR(x...)
Definition: SDL_DirectFB_video.h:100
SDL_malloc
#define SDL_malloc
Definition: SDL_dynapi_overrides.h:374
ShapeModeDefault
@ ShapeModeDefault
The default mode, a binarized alpha cutoff of 1.
Definition: SDL_shape.h:82
SDL_WindowShaper::driverdata
void * driverdata
Definition: SDL_sysvideo.h:55
SDL_CalculateShapeBitmap
void SDL_CalculateShapeBitmap(SDL_WindowShapeMode mode, SDL_Surface *shape, Uint8 *bitmap, Uint8 ppb)
Definition: SDL_shape.c:71
SDL_SetWindowPosition
#define SDL_SetWindowPosition
Definition: SDL_dynapi_overrides.h:524
SDL_Surface::format
SDL_PixelFormat * format
Definition: SDL_surface.h:73
SDL_DirectFB_video.h
w
GLubyte GLubyte GLubyte GLubyte w
Definition: SDL_opengl_glext.h:734