summaryrefslogtreecommitdiffstatshomepage
path: root/3rdparty/SDL2/src/video/SDL_shape.c
diff options
context:
space:
mode:
Diffstat (limited to '3rdparty/SDL2/src/video/SDL_shape.c')
-rw-r--r--3rdparty/SDL2/src/video/SDL_shape.c297
1 files changed, 0 insertions, 297 deletions
diff --git a/3rdparty/SDL2/src/video/SDL_shape.c b/3rdparty/SDL2/src/video/SDL_shape.c
deleted file mode 100644
index 4a2e5465b6e..00000000000
--- a/3rdparty/SDL2/src/video/SDL_shape.c
+++ /dev/null
@@ -1,297 +0,0 @@
-/*
- 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"
-
-#include "SDL.h"
-#include "SDL_assert.h"
-#include "SDL_video.h"
-#include "SDL_sysvideo.h"
-#include "SDL_pixels.h"
-#include "SDL_surface.h"
-#include "SDL_shape.h"
-#include "SDL_shape_internals.h"
-
-SDL_Window*
-SDL_CreateShapedWindow(const char *title,unsigned int x,unsigned int y,unsigned int w,unsigned int h,Uint32 flags)
-{
- SDL_Window *result = NULL;
- result = SDL_CreateWindow(title,-1000,-1000,w,h,(flags | SDL_WINDOW_BORDERLESS) & (~SDL_WINDOW_FULLSCREEN) & (~SDL_WINDOW_RESIZABLE) /* & (~SDL_WINDOW_SHOWN) */);
- if(result != NULL) {
- result->shaper = SDL_GetVideoDevice()->shape_driver.CreateShaper(result);
- if(result->shaper != NULL) {
- result->shaper->userx = x;
- result->shaper->usery = y;
- result->shaper->mode.mode = ShapeModeDefault;
- result->shaper->mode.parameters.binarizationCutoff = 1;
- result->shaper->hasshape = SDL_FALSE;
- return result;
- }
- else {
- SDL_DestroyWindow(result);
- return NULL;
- }
- }
- else
- return NULL;
-}
-
-SDL_bool
-SDL_IsShapedWindow(const SDL_Window *window)
-{
- if(window == NULL)
- return SDL_FALSE;
- else
- return (SDL_bool)(window->shaper != NULL);
-}
-
-/* REQUIRES that bitmap point to a w-by-h bitmap with ppb pixels-per-byte. */
-void
-SDL_CalculateShapeBitmap(SDL_WindowShapeMode mode,SDL_Surface *shape,Uint8* bitmap,Uint8 ppb)
-{
- int x = 0;
- int y = 0;
- Uint8 r = 0,g = 0,b = 0,alpha = 0;
- Uint8* pixel = NULL;
- Uint32 bitmap_pixel,pixel_value = 0,mask_value = 0;
- SDL_Color key;
- if(SDL_MUSTLOCK(shape))
- SDL_LockSurface(shape);
- for(y = 0;y<shape->h;y++) {
- for(x=0;x<shape->w;x++) {
- alpha = 0;
- pixel_value = 0;
- pixel = (Uint8 *)(shape->pixels) + (y*shape->pitch) + (x*shape->format->BytesPerPixel);
- switch(shape->format->BytesPerPixel) {
- case(1):
- pixel_value = *(Uint8*)pixel;
- break;
- case(2):
- pixel_value = *(Uint16*)pixel;
- break;
- case(3):
- pixel_value = *(Uint32*)pixel & (~shape->format->Amask);
- break;
- case(4):
- pixel_value = *(Uint32*)pixel;
- break;
- }
- SDL_GetRGBA(pixel_value,shape->format,&r,&g,&b,&alpha);
- bitmap_pixel = y*shape->w + x;
- switch(mode.mode) {
- case(ShapeModeDefault):
- mask_value = (alpha >= 1 ? 1 : 0);
- break;
- case(ShapeModeBinarizeAlpha):
- mask_value = (alpha >= mode.parameters.binarizationCutoff ? 1 : 0);
- break;
- case(ShapeModeReverseBinarizeAlpha):
- mask_value = (alpha <= mode.parameters.binarizationCutoff ? 1 : 0);
- break;
- case(ShapeModeColorKey):
- key = mode.parameters.colorKey;
- mask_value = ((key.r != r || key.g != g || key.b != b) ? 1 : 0);
- break;
- }
- bitmap[bitmap_pixel / ppb] |= mask_value << (7 - ((ppb - 1) - (bitmap_pixel % ppb)));
- }
- }
- if(SDL_MUSTLOCK(shape))
- SDL_UnlockSurface(shape);
-}
-
-static SDL_ShapeTree*
-RecursivelyCalculateShapeTree(SDL_WindowShapeMode mode,SDL_Surface* mask,SDL_Rect dimensions) {
- int x = 0,y = 0;
- Uint8* pixel = NULL;
- Uint32 pixel_value = 0;
- Uint8 r = 0,g = 0,b = 0,a = 0;
- SDL_bool pixel_opaque = SDL_FALSE;
- int last_opaque = -1;
- SDL_Color key;
- SDL_ShapeTree* result = (SDL_ShapeTree*)SDL_malloc(sizeof(SDL_ShapeTree));
- SDL_Rect next = {0,0,0,0};
-
- for(y=dimensions.y;y<dimensions.y + dimensions.h;y++) {
- for(x=dimensions.x;x<dimensions.x + dimensions.w;x++) {
- pixel_value = 0;
- pixel = (Uint8 *)(mask->pixels) + (y*mask->pitch) + (x*mask->format->BytesPerPixel);
- switch(mask->format->BytesPerPixel) {
- case(1):
- pixel_value = *(Uint8*)pixel;
- break;
- case(2):
- pixel_value = *(Uint16*)pixel;
- break;
- case(3):
- pixel_value = *(Uint32*)pixel & (~mask->format->Amask);
- break;
- case(4):
- pixel_value = *(Uint32*)pixel;
- break;
- }
- SDL_GetRGBA(pixel_value,mask->format,&r,&g,&b,&a);
- switch(mode.mode) {
- case(ShapeModeDefault):
- pixel_opaque = (a >= 1 ? SDL_TRUE : SDL_FALSE);
- break;
- case(ShapeModeBinarizeAlpha):
- pixel_opaque = (a >= mode.parameters.binarizationCutoff ? SDL_TRUE : SDL_FALSE);
- break;
- case(ShapeModeReverseBinarizeAlpha):
- pixel_opaque = (a <= mode.parameters.binarizationCutoff ? SDL_TRUE : SDL_FALSE);
- break;
- case(ShapeModeColorKey):
- key = mode.parameters.colorKey;
- pixel_opaque = ((key.r != r || key.g != g || key.b != b) ? SDL_TRUE : SDL_FALSE);
- break;
- }
- if(last_opaque == -1)
- last_opaque = pixel_opaque;
- if(last_opaque != pixel_opaque) {
- const int halfwidth = dimensions.w / 2;
- const int halfheight = dimensions.h / 2;
-
- result->kind = QuadShape;
-
- next.x = dimensions.x;
- next.y = dimensions.y;
- next.w = halfwidth;
- next.h = halfheight;
- result->data.children.upleft = (struct SDL_ShapeTree *)RecursivelyCalculateShapeTree(mode,mask,next);
-
- next.x = dimensions.x + halfwidth;
- next.w = dimensions.w - halfwidth;
- result->data.children.upright = (struct SDL_ShapeTree *)RecursivelyCalculateShapeTree(mode,mask,next);
-
- next.x = dimensions.x;
- next.w = halfwidth;
- next.y = dimensions.y + halfheight;
- next.h = dimensions.h - halfheight;
- result->data.children.downleft = (struct SDL_ShapeTree *)RecursivelyCalculateShapeTree(mode,mask,next);
-
- next.x = dimensions.x + halfwidth;
- next.w = dimensions.w - halfwidth;
- result->data.children.downright = (struct SDL_ShapeTree *)RecursivelyCalculateShapeTree(mode,mask,next);
-
- return result;
- }
- }
- }
-
-
- /* If we never recursed, all the pixels in this quadrant have the same "value". */
- result->kind = (last_opaque == SDL_TRUE ? OpaqueShape : TransparentShape);
- result->data.shape = dimensions;
- return result;
-}
-
-SDL_ShapeTree*
-SDL_CalculateShapeTree(SDL_WindowShapeMode mode,SDL_Surface* shape)
-{
- SDL_Rect dimensions = {0,0,shape->w,shape->h};
- SDL_ShapeTree* result = NULL;
- if(SDL_MUSTLOCK(shape))
- SDL_LockSurface(shape);
- result = RecursivelyCalculateShapeTree(mode,shape,dimensions);
- if(SDL_MUSTLOCK(shape))
- SDL_UnlockSurface(shape);
- return result;
-}
-
-void
-SDL_TraverseShapeTree(SDL_ShapeTree *tree,SDL_TraversalFunction function,void* closure)
-{
- SDL_assert(tree != NULL);
- if(tree->kind == QuadShape) {
- SDL_TraverseShapeTree((SDL_ShapeTree *)tree->data.children.upleft,function,closure);
- SDL_TraverseShapeTree((SDL_ShapeTree *)tree->data.children.upright,function,closure);
- SDL_TraverseShapeTree((SDL_ShapeTree *)tree->data.children.downleft,function,closure);
- SDL_TraverseShapeTree((SDL_ShapeTree *)tree->data.children.downright,function,closure);
- }
- else
- function(tree,closure);
-}
-
-void
-SDL_FreeShapeTree(SDL_ShapeTree** shape_tree)
-{
- if((*shape_tree)->kind == QuadShape) {
- SDL_FreeShapeTree((SDL_ShapeTree **)&(*shape_tree)->data.children.upleft);
- SDL_FreeShapeTree((SDL_ShapeTree **)&(*shape_tree)->data.children.upright);
- SDL_FreeShapeTree((SDL_ShapeTree **)&(*shape_tree)->data.children.downleft);
- SDL_FreeShapeTree((SDL_ShapeTree **)&(*shape_tree)->data.children.downright);
- }
- SDL_free(*shape_tree);
- *shape_tree = NULL;
-}
-
-int
-SDL_SetWindowShape(SDL_Window *window,SDL_Surface *shape,SDL_WindowShapeMode *shape_mode)
-{
- int result;
- if(window == NULL || !SDL_IsShapedWindow(window))
- /* The window given was not a shapeable window. */
- return SDL_NONSHAPEABLE_WINDOW;
- if(shape == NULL)
- /* Invalid shape argument. */
- return SDL_INVALID_SHAPE_ARGUMENT;
-
- if(shape_mode != NULL)
- window->shaper->mode = *shape_mode;
- result = SDL_GetVideoDevice()->shape_driver.SetWindowShape(window->shaper,shape,shape_mode);
- window->shaper->hasshape = SDL_TRUE;
- if(window->shaper->userx != 0 && window->shaper->usery != 0) {
- SDL_SetWindowPosition(window,window->shaper->userx,window->shaper->usery);
- window->shaper->userx = 0;
- window->shaper->usery = 0;
- }
- return result;
-}
-
-static SDL_bool
-SDL_WindowHasAShape(SDL_Window *window)
-{
- if (window == NULL || !SDL_IsShapedWindow(window))
- return SDL_FALSE;
- return window->shaper->hasshape;
-}
-
-int
-SDL_GetShapedWindowMode(SDL_Window *window,SDL_WindowShapeMode *shape_mode)
-{
- if(window != NULL && SDL_IsShapedWindow(window)) {
- if(shape_mode == NULL) {
- if(SDL_WindowHasAShape(window))
- /* The window given has a shape. */
- return 0;
- else
- /* The window given is shapeable but lacks a shape. */
- return SDL_WINDOW_LACKS_SHAPE;
- }
- else {
- *shape_mode = window->shaper->mode;
- return 0;
- }
- }
- else
- /* The window given is not a valid shapeable window. */
- return SDL_NONSHAPEABLE_WINDOW;
-}