mirror of
https://github.com/Oibaf66/frodo-wii.git
synced 2024-12-02 08:24:52 +01:00
695 lines
18 KiB
C++
695 lines
18 KiB
C++
/* _______ __ __ __ ______ __ __ _______ __ __
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* / _____/\ / /\ / /\ / /\ / ____/\ / /\ / /\ / ___ /\ / |\/ /\
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* / /\____\// / // / // / // /\___\// /_// / // /\_/ / // , |/ / /
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* / / /__ / / // / // / // / / / ___ / // ___ / // /| ' / /
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* / /_// /\ / /_// / // / // /_/_ / / // / // /\_/ / // / | / /
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* /______/ //______/ //_/ //_____/\ /_/ //_/ //_/ //_/ //_/ /|_/ /
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* \______\/ \______\/ \_\/ \_____\/ \_\/ \_\/ \_\/ \_\/ \_\/ \_\/
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*
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* Copyright (c) 2004 - 2008 Olof Naessén and Per Larsson
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*
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*
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* Per Larsson a.k.a finalman
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* Olof Naessén a.k.a jansem/yakslem
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*
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* Visit: http://guichan.sourceforge.net
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*
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* License: (BSD)
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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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* 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
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name of Guichan nor the names of its contributors may
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* be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
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* TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* For comments regarding functions please see the header file.
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*/
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#include "guichan/sdl/sdlgraphics.hpp"
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#include "guichan/exception.hpp"
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#include "guichan/font.hpp"
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#include "guichan/image.hpp"
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#include "guichan/sdl/sdlimage.hpp"
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#include "guichan/sdl/sdlpixel.hpp"
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// For some reason an old version of MSVC did not like std::abs,
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// so we added this macro.
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#ifndef ABS
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#define ABS(x) ((x)<0?-(x):(x))
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#endif
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namespace gcn
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{
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SDLGraphics::SDLGraphics()
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{
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mAlpha = false;
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}
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void SDLGraphics::_beginDraw()
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{
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Rectangle area;
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area.x = 0;
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area.y = 0;
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area.width = mTarget->w;
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area.height = mTarget->h;
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pushClipArea(area);
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}
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void SDLGraphics::_endDraw()
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{
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popClipArea();
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}
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void SDLGraphics::setTarget(SDL_Surface* target)
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{
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mTarget = target;
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}
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bool SDLGraphics::pushClipArea(Rectangle area)
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{
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SDL_Rect rect;
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bool result = Graphics::pushClipArea(area);
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const ClipRectangle& carea = mClipStack.top();
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rect.x = carea.x;
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rect.y = carea.y;
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rect.w = carea.width;
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rect.h = carea.height;
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SDL_SetClipRect(mTarget, &rect);
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return result;
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}
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void SDLGraphics::popClipArea()
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{
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Graphics::popClipArea();
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if (mClipStack.empty())
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{
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return;
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}
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const ClipRectangle& carea = mClipStack.top();
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SDL_Rect rect;
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rect.x = carea.x;
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rect.y = carea.y;
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rect.w = carea.width;
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rect.h = carea.height;
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SDL_SetClipRect(mTarget, &rect);
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}
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SDL_Surface* SDLGraphics::getTarget() const
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{
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return mTarget;
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}
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void SDLGraphics::drawImage(const Image* image,
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int srcX,
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int srcY,
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int dstX,
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int dstY,
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int width,
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int height)
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{
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if (mClipStack.empty())
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{
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throw GCN_EXCEPTION("Clip stack is empty, perhaps you called a draw funtion outside of _beginDraw() and _endDraw()?");
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}
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const ClipRectangle& top = mClipStack.top();
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SDL_Rect src;
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SDL_Rect dst;
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src.x = srcX;
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src.y = srcY;
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src.w = width;
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src.h = height;
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dst.x = dstX + top.xOffset;
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dst.y = dstY + top.yOffset;
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const SDLImage* srcImage = dynamic_cast<const SDLImage*>(image);
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if (srcImage == NULL)
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{
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throw GCN_EXCEPTION("Trying to draw an image of unknown format, must be an SDLImage.");
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}
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SDL_BlitSurface(srcImage->getSurface(), &src, mTarget, &dst);
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}
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void SDLGraphics::fillRectangle(const Rectangle& rectangle)
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{
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if (mClipStack.empty())
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{
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throw GCN_EXCEPTION("Clip stack is empty, perhaps you called a draw funtion outside of _beginDraw() and _endDraw()?");
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}
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const ClipRectangle& top = mClipStack.top();
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Rectangle area = rectangle;
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area.x += top.xOffset;
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area.y += top.yOffset;
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if(!area.isIntersecting(top))
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{
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return;
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}
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if (mAlpha)
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{
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int x1 = area.x > top.x ? area.x : top.x;
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int y1 = area.y > top.y ? area.y : top.y;
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int x2 = area.x + area.width < top.x + top.width ? area.x + area.width : top.x + top.width;
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int y2 = area.y + area.height < top.y + top.height ? area.y + area.height : top.y + top.height;
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int x, y;
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SDL_LockSurface(mTarget);
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for (y = y1; y < y2; y++)
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{
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for (x = x1; x < x2; x++)
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{
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SDLputPixelAlpha(mTarget, x, y, mColor);
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}
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}
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SDL_UnlockSurface(mTarget);
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}
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else
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{
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SDL_Rect rect;
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rect.x = area.x;
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rect.y = area.y;
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rect.w = area.width;
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rect.h = area.height;
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Uint32 color = SDL_MapRGBA(mTarget->format,
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mColor.r,
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mColor.g,
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mColor.b,
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mColor.a);
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SDL_FillRect(mTarget, &rect, color);
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}
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}
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void SDLGraphics::drawPoint(int x, int y)
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{
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if (mClipStack.empty())
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{
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throw GCN_EXCEPTION("Clip stack is empty, perhaps you called a draw funtion outside of _beginDraw() and _endDraw()?");
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}
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const ClipRectangle& top = mClipStack.top();
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x += top.xOffset;
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y += top.yOffset;
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if(!top.isPointInRect(x,y))
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return;
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if (mAlpha)
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{
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SDLputPixelAlpha(mTarget, x, y, mColor);
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}
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else
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{
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SDLputPixel(mTarget, x, y, mColor);
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}
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}
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void SDLGraphics::drawHLine(int x1, int y, int x2)
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{
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if (mClipStack.empty())
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{
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throw GCN_EXCEPTION("Clip stack is empty, perhaps you called a draw funtion outside of _beginDraw() and _endDraw()?");
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}
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const ClipRectangle& top = mClipStack.top();
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x1 += top.xOffset;
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y += top.yOffset;
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x2 += top.xOffset;
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if (y < top.y || y >= top.y + top.height)
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{
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return;
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}
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if (x1 > x2)
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{
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x1 ^= x2;
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x2 ^= x1;
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x1 ^= x2;
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}
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if (top.x > x1)
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{
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if (top.x > x2)
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{
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return;
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}
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x1 = top.x;
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}
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if (top.x + top.width <= x2)
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{
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if (top.x + top.width <= x1)
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{
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return;
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}
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x2 = top.x + top.width -1;
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}
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int bpp = mTarget->format->BytesPerPixel;
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SDL_LockSurface(mTarget);
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Uint8 *p = (Uint8 *)mTarget->pixels + y * mTarget->pitch + x1 * bpp;
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Uint32 pixel = SDL_MapRGB(mTarget->format,
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mColor.r,
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mColor.g,
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mColor.b);
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switch(bpp)
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{
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case 1:
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for (;x1 <= x2; ++x1)
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{
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*(p++) = pixel;
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}
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break;
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case 2:
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{
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Uint16* q = (Uint16*)p;
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for (;x1 <= x2; ++x1)
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{
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*(q++) = pixel;
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}
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break;
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}
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case 3:
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if(SDL_BYTEORDER == SDL_BIG_ENDIAN)
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{
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for (;x1 <= x2; ++x1)
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{
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p[0] = (pixel >> 16) & 0xff;
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p[1] = (pixel >> 8) & 0xff;
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p[2] = pixel & 0xff;
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p += 3;
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}
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}
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else
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{
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for (;x1 <= x2; ++x1)
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{
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p[0] = pixel & 0xff;
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p[1] = (pixel >> 8) & 0xff;
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p[2] = (pixel >> 16) & 0xff;
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p += 3;
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}
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}
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break;
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case 4:
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{
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Uint32* q = (Uint32*)p;
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for (;x1 <= x2; ++x1)
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{
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if (mAlpha)
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{
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*q = SDLAlpha32(pixel,*q,mColor.a);
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q++;
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}
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else
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{
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*(q++) = pixel;
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}
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}
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break;
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}
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} // end switch
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SDL_UnlockSurface(mTarget);
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}
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void SDLGraphics::drawVLine(int x, int y1, int y2)
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{
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if (mClipStack.empty())
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{
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throw GCN_EXCEPTION("Clip stack is empty, perhaps you called a draw funtion outside of _beginDraw() and _endDraw()?");
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}
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const ClipRectangle& top = mClipStack.top();
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x += top.xOffset;
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y1 += top.yOffset;
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y2 += top.yOffset;
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if (x < top.x || x >= top.x + top.width)
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{
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return;
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}
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if (y1 > y2)
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{
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y1 ^= y2;
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y2 ^= y1;
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y1 ^= y2;
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}
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if (top.y > y1)
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{
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if (top.y > y2)
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{
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return;
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}
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y1 = top.y;
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}
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if (top.y + top.height <= y2)
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{
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if (top.y + top.height <= y1)
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{
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return;
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}
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y2 = top.y + top.height - 1;
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}
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int bpp = mTarget->format->BytesPerPixel;
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SDL_LockSurface(mTarget);
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Uint8 *p = (Uint8 *)mTarget->pixels + y1 * mTarget->pitch + x * bpp;
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Uint32 pixel = SDL_MapRGB(mTarget->format, mColor.r, mColor.g, mColor.b);
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switch(bpp)
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{
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case 1:
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for (;y1 <= y2; ++y1)
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{
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*p = pixel;
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p += mTarget->pitch;
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}
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break;
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case 2:
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for (;y1 <= y2; ++y1)
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{
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*(Uint16*)p = pixel;
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p += mTarget->pitch;
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}
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break;
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case 3:
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if(SDL_BYTEORDER == SDL_BIG_ENDIAN)
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{
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for (;y1 <= y2; ++y1)
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{
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p[0] = (pixel >> 16) & 0xff;
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p[1] = (pixel >> 8) & 0xff;
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p[2] = pixel & 0xff;
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p += mTarget->pitch;
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}
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}
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else
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{
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for (;y1 <= y2; ++y1)
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{
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p[0] = pixel & 0xff;
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p[1] = (pixel >> 8) & 0xff;
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p[2] = (pixel >> 16) & 0xff;
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p += mTarget->pitch;
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}
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}
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break;
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case 4:
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for (;y1 <= y2; ++y1)
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{
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if (mAlpha)
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{
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*(Uint32*)p = SDLAlpha32(pixel,*(Uint32*)p,mColor.a);
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}
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else
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{
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*(Uint32*)p = pixel;
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}
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p += mTarget->pitch;
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}
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break;
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} // end switch
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SDL_UnlockSurface(mTarget);
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}
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void SDLGraphics::drawRectangle(const Rectangle& rectangle)
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{
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int x1 = rectangle.x;
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int x2 = rectangle.x + rectangle.width - 1;
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int y1 = rectangle.y;
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int y2 = rectangle.y + rectangle.height - 1;
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drawHLine(x1, y1, x2);
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drawHLine(x1, y2, x2);
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drawVLine(x1, y1, y2);
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drawVLine(x2, y1, y2);
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}
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void SDLGraphics::drawLine(int x1, int y1, int x2, int y2)
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{
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if (x1 == x2)
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{
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drawVLine(x1, y1, y2);
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return;
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}
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if (y1 == y2)
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{
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drawHLine(x1, y1, x2);
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return;
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}
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if (mClipStack.empty())
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{
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throw GCN_EXCEPTION("Clip stack is empty, perhaps you called a draw funtion outside of _beginDraw() and _endDraw()?");
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}
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const ClipRectangle& top = mClipStack.top();
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x1 += top.xOffset;
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y1 += top.yOffset;
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x2 += top.xOffset;
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y2 += top.yOffset;
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// Draw a line with Bresenham
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int dx = ABS(x2 - x1);
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int dy = ABS(y2 - y1);
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if (dx > dy)
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{
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if (x1 > x2)
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{
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// swap x1, x2
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x1 ^= x2;
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x2 ^= x1;
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x1 ^= x2;
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// swap y1, y2
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y1 ^= y2;
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y2 ^= y1;
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y1 ^= y2;
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}
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if (y1 < y2)
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{
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int y = y1;
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int p = 0;
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for (int x = x1; x <= x2; x++)
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{
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if (top.isPointInRect(x, y))
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{
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if (mAlpha)
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{
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SDLputPixelAlpha(mTarget, x, y, mColor);
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}
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else
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{
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SDLputPixel(mTarget, x, y, mColor);
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}
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}
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p += dy;
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if (p * 2 >= dx)
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{
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y++;
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p -= dx;
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}
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}
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}
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else
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{
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int y = y1;
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int p = 0;
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for (int x = x1; x <= x2; x++)
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{
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if (top.isPointInRect(x, y))
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{
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if (mAlpha)
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{
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SDLputPixelAlpha(mTarget, x, y, mColor);
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}
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else
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{
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SDLputPixel(mTarget, x, y, mColor);
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}
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}
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p += dy;
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if (p * 2 >= dx)
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{
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y--;
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p -= dx;
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}
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}
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}
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}
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else
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{
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if (y1 > y2)
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|
{
|
|
// swap y1, y2
|
|
y1 ^= y2;
|
|
y2 ^= y1;
|
|
y1 ^= y2;
|
|
|
|
// swap x1, x2
|
|
x1 ^= x2;
|
|
x2 ^= x1;
|
|
x1 ^= x2;
|
|
}
|
|
|
|
if (x1 < x2)
|
|
{
|
|
int x = x1;
|
|
int p = 0;
|
|
|
|
for (int y = y1; y <= y2; y++)
|
|
{
|
|
if (top.isPointInRect(x, y))
|
|
{
|
|
if (mAlpha)
|
|
{
|
|
SDLputPixelAlpha(mTarget, x, y, mColor);
|
|
}
|
|
else
|
|
{
|
|
SDLputPixel(mTarget, x, y, mColor);
|
|
}
|
|
}
|
|
|
|
p += dx;
|
|
|
|
if (p * 2 >= dy)
|
|
{
|
|
x++;
|
|
p -= dy;
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
int x = x1;
|
|
int p = 0;
|
|
|
|
for (int y = y1; y <= y2; y++)
|
|
{
|
|
if (top.isPointInRect(x, y))
|
|
{
|
|
if (mAlpha)
|
|
{
|
|
SDLputPixelAlpha(mTarget, x, y, mColor);
|
|
}
|
|
else
|
|
{
|
|
SDLputPixel(mTarget, x, y, mColor);
|
|
}
|
|
}
|
|
|
|
p += dx;
|
|
|
|
if (p * 2 >= dy)
|
|
{
|
|
x--;
|
|
p -= dy;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void SDLGraphics::setColor(const Color& color)
|
|
{
|
|
mColor = color;
|
|
|
|
mAlpha = color.a != 255;
|
|
}
|
|
|
|
const Color& SDLGraphics::getColor() const
|
|
{
|
|
return mColor;
|
|
}
|
|
|
|
void SDLGraphics::drawSDLSurface(SDL_Surface* surface,
|
|
SDL_Rect source,
|
|
SDL_Rect destination)
|
|
{
|
|
if (mClipStack.empty())
|
|
{
|
|
throw GCN_EXCEPTION("Clip stack is empty, perhaps you called a draw funtion outside of _beginDraw() and _endDraw()?");
|
|
}
|
|
|
|
const ClipRectangle& top = mClipStack.top();
|
|
|
|
destination.x += top.xOffset;
|
|
destination.y += top.yOffset;
|
|
|
|
SDL_BlitSurface(surface, &source, mTarget, &destination);
|
|
}
|
|
}
|