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
32 SDL_WindowShaper*
DirectFB_CreateShaper(SDL_Window * window)33 DirectFB_CreateShaper(SDL_Window* window) {
34 SDL_WindowShaper* result = NULL;
35 SDL_ShapeData* data;
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
DirectFB_ResizeWindowShape(SDL_Window * window)54 DirectFB_ResizeWindowShape(SDL_Window* window) {
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
DirectFB_SetWindowShape(SDL_WindowShaper * shaper,SDL_Surface * shape,SDL_WindowShapeMode * shape_mode)69 DirectFB_SetWindowShape(SDL_WindowShaper *shaper,SDL_Surface *shape,SDL_WindowShapeMode *shape_mode) {
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 {
79 SDL_VideoDisplay *display = SDL_GetDisplayForWindow(shaper->window);
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 ?? */
123 DirectFB_WM_RedrawLayout(SDL_GetDisplayForWindow(shaper->window)->device, shaper->window);
124 }
125
126 return 0;
127 error:
128 return -1;
129 }
130
131 #endif /* SDL_VIDEO_DRIVER_DIRECTFB */
132