SDL_x11shape.c
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/*
Simple DirectMedia Layer
Copyright (C) 1997-2016 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "../../SDL_internal.h"
#if SDL_VIDEO_DRIVER_X11
#include "SDL_assert.h"
#include "SDL_x11video.h"
#include "SDL_x11shape.h"
#include "SDL_x11window.h"
#include "../SDL_shape_internals.h"
SDL_Window*
X11_CreateShapedWindow(const char *title,unsigned int x,unsigned int y,unsigned int w,unsigned int h,Uint32 flags) {
return SDL_CreateWindow(title,x,y,w,h,flags);
}
SDL_WindowShaper*
X11_CreateShaper(SDL_Window* window) {
SDL_WindowShaper* result = NULL;
SDL_ShapeData* data = NULL;
int resized_properly;
#if SDL_VIDEO_DRIVER_X11_XSHAPE
if (SDL_X11_HAVE_XSHAPE) { /* Make sure X server supports it. */
result = malloc(sizeof(SDL_WindowShaper));
result->window = window;
result->mode.mode = ShapeModeDefault;
result->mode.parameters.binarizationCutoff = 1;
result->userx = result->usery = 0;
data = SDL_malloc(sizeof(SDL_ShapeData));
result->driverdata = data;
data->bitmapsize = 0;
data->bitmap = NULL;
window->shaper = result;
resized_properly = X11_ResizeWindowShape(window);
SDL_assert(resized_properly == 0);
}
#endif
return result;
}
int
X11_ResizeWindowShape(SDL_Window* window) {
SDL_ShapeData* data = window->shaper->driverdata;
unsigned int bitmapsize = window->w / 8;
SDL_assert(data != NULL);
if(window->w % 8 > 0)
bitmapsize += 1;
bitmapsize *= window->h;
if(data->bitmapsize != bitmapsize || data->bitmap == NULL) {
data->bitmapsize = bitmapsize;
if(data->bitmap != NULL)
free(data->bitmap);
data->bitmap = malloc(data->bitmapsize);
if(data->bitmap == NULL) {
return SDL_SetError("Could not allocate memory for shaped-window bitmap.");
}
}
memset(data->bitmap,0,data->bitmapsize);
window->shaper->userx = window->x;
window->shaper->usery = window->y;
SDL_SetWindowPosition(window,-1000,-1000);
return 0;
}
int
X11_SetWindowShape(SDL_WindowShaper *shaper,SDL_Surface *shape,SDL_WindowShapeMode *shape_mode) {
SDL_ShapeData *data = NULL;
SDL_WindowData *windowdata = NULL;
Pixmap shapemask;
if(shaper == NULL || shape == NULL || shaper->driverdata == NULL)
return -1;
#if SDL_VIDEO_DRIVER_X11_XSHAPE
if(shape->format->Amask == 0 && SDL_SHAPEMODEALPHA(shape_mode->mode))
return -2;
if(shape->w != shaper->window->w || shape->h != shaper->window->h)
return -3;
data = shaper->driverdata;
/* Assume that shaper->alphacutoff already has a value, because SDL_SetWindowShape() should have given it one. */
SDL_CalculateShapeBitmap(shaper->mode,shape,data->bitmap,8);
windowdata = (SDL_WindowData*)(shaper->window->driverdata);
shapemask = X11_XCreateBitmapFromData(windowdata->videodata->display,windowdata->xwindow,data->bitmap,shaper->window->w,shaper->window->h);
X11_XShapeCombineMask(windowdata->videodata->display,windowdata->xwindow, ShapeBounding, 0, 0,shapemask, ShapeSet);
X11_XSync(windowdata->videodata->display,False);
X11_XFreePixmap(windowdata->videodata->display,shapemask);
#endif
return 0;
}
#endif /* SDL_VIDEO_DRIVER_X11 */
SDL_ShapeData::bitmap
void * bitmap
Definition: SDL_x11shape.h:31
X11_ResizeWindowShape
int X11_ResizeWindowShape(SDL_Window *window)
result
GLuint64EXT * result
Definition: SDL_opengl_glext.h:9432
Uint32
uint32_t Uint32
An unsigned 32-bit integer type.
Definition: SDL_stdinc.h:155
SDL_Window::w
int w
Definition: SDL_sysvideo.h:78
SDL_Surface::h
int h
Definition: SDL_surface.h:73
x
GLint GLint GLint GLint GLint x
Definition: SDL_opengl.h:1567
SDL_ShapeData::bitmapsize
Uint32 bitmapsize
Definition: SDL_x11shape.h:32
SDL_Window::x
int x
Definition: SDL_sysvideo.h:77
SDL_VideoData::display
struct wl_display * display
Definition: SDL_waylandvideo.h:40
window
SDL_Window * window
Definition: testautomation_render.c:26
SDL_WindowData::xwindow
Window xwindow
Definition: SDL_x11window.h:46
X11_SetWindowShape
int X11_SetWindowShape(SDL_WindowShaper *shaper, SDL_Surface *shape, SDL_WindowShapeMode *shapeMode)
free
SDL_EventEntry * free
Definition: SDL_events.c:81
SDL_Surface
A collection of pixels used in software blitting.
Definition: SDL_surface.h:69
SDL_WindowShaper::driverdata
void * driverdata
Definition: SDL_sysvideo.h:52
data
GLint GLenum GLsizei GLsizei GLsizei GLint GLsizei const GLvoid * data
Definition: SDL_opengl.h:1967
memset
#define memset
Definition: SDL_malloc.c:639
SDL_CreateWindow
#define SDL_CreateWindow
Definition: SDL_dynapi_overrides.h:518
SDL_x11window.h
SDL_SHAPEMODEALPHA
#define SDL_SHAPEMODEALPHA(mode)
Definition: SDL_shape.h:90
SDL_ShapeData
Definition: SDL_cocoashape.h:32
SDL_Surface::w
int w
Definition: SDL_surface.h:73
SDL_WindowShaper
Definition: SDL_sysvideo.h:38
SDL_WindowData
Definition: SDL_androidwindow.h:34
X11_CreateShapedWindow
SDL_Window * X11_CreateShapedWindow(const char *title, unsigned int x, unsigned int y, unsigned int w, unsigned int h, Uint32 flags)
SDL_x11shape.h
SDL_WindowShaper::mode
SDL_WindowShapeMode mode
Definition: SDL_sysvideo.h:47
y
GLint GLint GLint GLint GLint GLint y
Definition: SDL_opengl.h:1567
SDL_Window::shaper
SDL_WindowShaper * shaper
Definition: SDL_sysvideo.h:99
SDL_WindowData::videodata
struct SDL_VideoData * videodata
Definition: SDL_cocoawindow.h:116
SDL_WindowShaper::window
SDL_Window * window
Definition: SDL_sysvideo.h:41
ShapeModeDefault
The default mode, a binarized alpha cutoff of 1.
Definition: SDL_shape.h:81
SDL_WindowShapeMode::parameters
SDL_WindowShapeParams parameters
Window-shape parameters.
Definition: SDL_shape.h:104
SDL_Window::y
int y
Definition: SDL_sysvideo.h:77
SDL_WindowShaper::userx
Uint32 userx
Definition: SDL_sysvideo.h:44
SDL_WindowShaper::usery
Uint32 usery
Definition: SDL_sysvideo.h:44
X11_CreateShaper
SDL_WindowShaper * X11_CreateShaper(SDL_Window *window)
SDL_Window::h
int h
Definition: SDL_sysvideo.h:78
SDL_assert
#define SDL_assert(condition)
Definition: SDL_assert.h:167
NULL
#define NULL
Definition: begin_code.h:143
SDL_Surface::format
SDL_PixelFormat * format
Definition: SDL_surface.h:72
malloc
#define malloc
Definition: SDL_malloc.c:641
SDL_SetError
#define SDL_SetError
Definition: SDL_dynapi_overrides.h:36
SDL_Window
The type used to identify a window.
Definition: SDL_sysvideo.h:71
SDL_x11video.h
SDL_WindowShapeParams::binarizationCutoff
Uint8 binarizationCutoff
a cutoff alpha value for binarization of the window shape&#39;s alpha channel.
Definition: SDL_shape.h:95
flags
GLbitfield flags
Definition: SDL_opengl_glext.h:1480
SDL_malloc
#define SDL_malloc
Definition: SDL_dynapi_overrides.h:380
SDL_WindowShapeMode
A struct that tags the SDL_WindowShapeParams union with an enum describing the type of its contents...
Definition: SDL_shape.h:100
SDL_PixelFormat::Amask
Uint32 Amask
Definition: SDL_pixels.h:309
w
GLubyte GLubyte GLubyte GLubyte w
Definition: SDL_opengl_glext.h:731
SDL_Window::driverdata
void * driverdata
Definition: SDL_sysvideo.h:106
SDL_WindowShapeMode::mode
WindowShapeMode mode
The mode of these window-shape parameters.
Definition: SDL_shape.h:102
SDL_SetWindowPosition
#define SDL_SetWindowPosition
Definition: SDL_dynapi_overrides.h:528
h
GLfloat GLfloat GLfloat GLfloat h
Definition: SDL_opengl_glext.h:1946
SDL_CalculateShapeBitmap
void SDL_CalculateShapeBitmap(SDL_WindowShapeMode mode, SDL_Surface *shape, Uint8 *bitmap, Uint8 ppb)
Definition: SDL_shape.c:67
SDL_assert.h