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
32 SDL_Window*
DirectFB_CreateShapedWindow(const char * title,unsigned int x,unsigned int y,unsigned int w,unsigned int h,Uint32 flags)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
37 SDL_WindowShaper*
DirectFB_CreateShaper(SDL_Window * window)38 DirectFB_CreateShaper(SDL_Window* window) {
39 SDL_WindowShaper* result = NULL;
40
41 result = malloc(sizeof(SDL_WindowShaper));
42 result->window = window;
43 result->mode.mode = ShapeModeDefault;
44 result->mode.parameters.binarizationCutoff = 1;
45 result->userx = result->usery = 0;
46 SDL_ShapeData* data = SDL_malloc(sizeof(SDL_ShapeData));
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
DirectFB_ResizeWindowShape(SDL_Window * window)57 DirectFB_ResizeWindowShape(SDL_Window* window) {
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
DirectFB_SetWindowShape(SDL_WindowShaper * shaper,SDL_Surface * shape,SDL_WindowShapeMode * shape_mode)72 DirectFB_SetWindowShape(SDL_WindowShaper *shaper,SDL_Surface *shape,SDL_WindowShapeMode *shape_mode) {
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 {
82 SDL_VideoDisplay *display = SDL_GetDisplayForWindow(shaper->window);
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 ?? */
126 DirectFB_WM_RedrawLayout(SDL_GetDisplayForWindow(shaper->window)->device, shaper->window);
127 }
128
129 return 0;
130 error:
131 return -1;
132 }
133
134 #endif /* SDL_VIDEO_DRIVER_DIRECTFB */
135