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https://github.com/ZDoom/Raze.git
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88 lines
2.8 KiB
C++
88 lines
2.8 KiB
C++
/*
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** i_gui.cpp
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**
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**---------------------------------------------------------------------------
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** Copyright 2008 Randy Heit
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** All rights reserved.
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**
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** Redistribution and use in source and binary forms, with or without
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** modification, are permitted provided that the following conditions
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** are met:
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**
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** 1. Redistributions of source code must retain the above copyright
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** notice, this list of conditions and the following disclaimer.
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** 2. Redistributions in binary form must reproduce the above copyright
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** notice, this list of conditions and the following disclaimer in the
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** documentation and/or other materials provided with the distribution.
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** 3. The name of the author may not be used to endorse or promote products
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** derived from this software without specific prior written permission.
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**
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** THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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** OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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** IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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** NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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** THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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**---------------------------------------------------------------------------
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**
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*/
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#include <string.h>
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#include <SDL.h>
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#include "bitmap.h"
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#include "textures.h"
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bool I_SetCursor(FGameTexture *cursorpic)
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{
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static SDL_Cursor *cursor;
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static SDL_Surface *cursorSurface;
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if (cursorpic != NULL && cursorpic->isValid())
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{
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auto src = cursorpic->GetTexture()->GetBgraBitmap(nullptr);
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// Must be no larger than 32x32.
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if (src.GetWidth() > 32 || src.GetHeight() > 32)
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{
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return false;
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}
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SDL_ShowCursor(SDL_DISABLE);
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if (cursorSurface == NULL)
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cursorSurface = SDL_CreateRGBSurface (0, 32, 32, 32, MAKEARGB(0,255,0,0), MAKEARGB(0,0,255,0), MAKEARGB(0,0,0,255), MAKEARGB(255,0,0,0));
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SDL_LockSurface(cursorSurface);
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uint8_t buffer[32*32*4];
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memset(buffer, 0, 32*32*4);
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FBitmap bmp(buffer, 32*4, 32, 32);
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bmp.Blit(0, 0, src); // expand to 32*32
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memcpy(cursorSurface->pixels, bmp.GetPixels(), 32*32*4);
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SDL_UnlockSurface(cursorSurface);
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if (cursor)
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SDL_FreeCursor (cursor);
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cursor = SDL_CreateColorCursor (cursorSurface, 0, 0);
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SDL_SetCursor (cursor);
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SDL_ShowCursor(SDL_ENABLE);
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}
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else
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{
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if (cursor)
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{
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SDL_SetCursor (NULL);
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SDL_FreeCursor (cursor);
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cursor = NULL;
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}
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if (cursorSurface != NULL)
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{
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SDL_FreeSurface(cursorSurface);
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cursorSurface = NULL;
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}
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}
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return true;
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}
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