SDL  2.0
SDL_DirectFB_shape.c
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1 /*
2  Simple DirectMedia Layer
3  Copyright (C) 1997-2018 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;
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));
120  SDL_DFB_FREE(bitmap);
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 */
GLsizei GLfixed GLfixed GLfixed GLfixed const GLubyte * bitmap
SDL_WindowShaper * DirectFB_CreateShaper(SDL_Window *window)
#define SDL_DFB_FREE(x)
GLuint64EXT * result
GLfloat GLfloat GLfloat GLfloat h
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:1974
#define SDL_SHAPEMODEALPHA(mode)
Definition: SDL_shape.h:91
IDirectFBSurface * surface
uint32_t Uint32
Definition: SDL_stdinc.h:181
GLenum src
#define SDL_DFB_RELEASE(x)
SDL_VideoDevice * device
Definition: SDL_sysvideo.h:136
SDL_WindowShapeMode mode
Definition: SDL_sysvideo.h:49
#define SDL_DFB_DEVICEDATA(dev)
SDL_WindowShaper * shaper
Definition: SDL_sysvideo.h:104
uint8_t Uint8
Definition: SDL_stdinc.h:157
SDL_Window * window
Definition: SDL_sysvideo.h:43
GLubyte GLubyte GLubyte GLubyte w
The default mode, a binarized alpha cutoff of 1.
Definition: SDL_shape.h:82
SDL_WindowShapeParams parameters
Window-shape parameters.
Definition: SDL_shape.h:105
GLint GLint GLsizei GLsizei GLsizei GLint GLenum GLenum const GLvoid * pixels
Definition: SDL_opengl.h:1572
int32_t Sint32
Definition: SDL_stdinc.h:175
int DirectFB_SetWindowShape(SDL_WindowShaper *shaper, SDL_Surface *shape, SDL_WindowShapeMode *shapeMode)
#define SDL_assert(condition)
Definition: SDL_assert.h:169
#define NULL
Definition: begin_code.h:164
#define SDL_DFB_ALLOC_CLEAR(r, s)
#define SDL_DFB_CHECKERR(x...)
SDL_PixelFormat * format
Definition: SDL_surface.h:72
int DirectFB_ResizeWindowShape(SDL_Window *window)
SDL_VideoDisplay * SDL_GetDisplayForWindow(SDL_Window *window)
Definition: SDL_video.c:1073
EGLSurface EGLNativeWindowType * window
Definition: eglext.h:1025
void DirectFB_WM_RedrawLayout(_THIS, SDL_Window *window)
#define SDL_DFB_CHECK(x...)
The type used to identify a window.
Definition: SDL_sysvideo.h:73
Uint8 binarizationCutoff
A cutoff alpha value for binarization of the window shape&#39;s alpha channel.
Definition: SDL_shape.h:96
#define SDL_malloc
A struct that tags the SDL_WindowShapeParams union with an enum describing the type of its contents...
Definition: SDL_shape.h:101
WindowShapeMode mode
The mode of these window-shape parameters.
Definition: SDL_shape.h:103
#define SDL_SetWindowPosition
#define malloc
Definition: SDL_qsort.c:47
void SDL_CalculateShapeBitmap(SDL_WindowShapeMode mode, SDL_Surface *shape, Uint8 *bitmap, Uint8 ppb)
Definition: SDL_shape.c:71