fife-parpg: ext/guichan-0.8.1/src/sdl/sdlgraphics.cpp comparison

comparison ext/guichan-0.8.1/src/sdl/sdlgraphics.cpp @ 0:4a0efb7baf70

* Datasets becomes the new trunk and retires after that :-)

author	mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
date	Sun, 29 Jun 2008 18:44:17 +0000
parents
children

comparison

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--1:000000000000
+:4a0efb7baf70
+/*      _______   __   __   __   ______   __   __   _______   __   __
+*     / _____/\ / /\ / /\ / /\ / ____/\ / /\ / /\ / ___  /\ /  |\/ /\
+*    / /\____\// / // / // / // /\___\// /_// / // /\_/ / // , |/ / /
+*   / / /__   / / // / // / // / /    / ___  / // ___  / // /| ' / /
+*  / /_// /\ / /_// / // / // /_/_   / / // / // /\_/ / // / |  / /
+* /______/ //______/ //_/ //_____/\ /_/ //_/ //_/ //_/ //_/ /|_/ /
+* \______\/ \______\/ \_\/ \_____\/ \_\/ \_\/ \_\/ \_\/ \_\/ \_\/
+*
+* Copyright (c) 2004 - 2008 Olof Naessén and Per Larsson
+*
+*
+* Per Larsson a.k.a finalman
+* Olof Naessén a.k.a jansem/yakslem
+*
+* Visit: http://guichan.sourceforge.net
+*
+* License: (BSD)
+* Redistribution and use in source and binary forms, with or without
+* modification, are permitted provided that the following conditions
+* are met:
+* 1. Redistributions of source code must retain the above copyright
+*    notice, this list of conditions and the following disclaimer.
+* 2. Redistributions in binary form must reproduce the above copyright
+*    notice, this list of conditions and the following disclaimer in
+*    the documentation and/or other materials provided with the
+*    distribution.
+* 3. Neither the name of Guichan nor the names of its contributors may
+*    be used to endorse or promote products derived from this software
+*    without specific prior written permission.
+*
+* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
+* TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+/*
+* For comments regarding functions please see the header file.
+*/
+#include "guichan/sdl/sdlgraphics.hpp"
+#include "guichan/exception.hpp"
+#include "guichan/font.hpp"
+#include "guichan/image.hpp"
+#include "guichan/sdl/sdlimage.hpp"
+#include "guichan/sdl/sdlpixel.hpp"
+// For some reason an old version of MSVC did not like std::abs,
+// so we added this macro.
+#ifndef ABS
+#define ABS(x) ((x)<0?-(x):(x))
+#endif
+namespace gcn
+{
+SDLGraphics::SDLGraphics()
+{
+mAlpha = false;
+}
+void SDLGraphics::_beginDraw()
+{
+Rectangle area;
+area.x = 0;
+area.y = 0;
+area.width = mTarget->w;
+area.height = mTarget->h;
+pushClipArea(area);
+}
+void SDLGraphics::_endDraw()
+{
+popClipArea();
+}
+void SDLGraphics::setTarget(SDL_Surface* target)
+{
+mTarget = target;
+}
+bool SDLGraphics::pushClipArea(Rectangle area)
+{
+SDL_Rect rect;
+bool result = Graphics::pushClipArea(area);
+const ClipRectangle& carea = mClipStack.top();
+rect.x = carea.x;
+rect.y = carea.y;
+rect.w = carea.width;
+rect.h = carea.height;
+SDL_SetClipRect(mTarget, &rect);
+return result;
+}
+void SDLGraphics::popClipArea()
+{
+Graphics::popClipArea();
+if (mClipStack.empty())
+{
+return;
+}
+const ClipRectangle& carea = mClipStack.top();
+SDL_Rect rect;
+rect.x = carea.x;
+rect.y = carea.y;
+rect.w = carea.width;
+rect.h = carea.height;
+SDL_SetClipRect(mTarget, &rect);
+}
+SDL_Surface* SDLGraphics::getTarget() const
+{
+return mTarget;
+}
+void SDLGraphics::drawImage(const Image* image,
+int srcX,
+int srcY,
+int dstX,
+int dstY,
+int width,
+int height)
+{
+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();
+SDL_Rect src;
+SDL_Rect dst;
+src.x = srcX;
+src.y = srcY;
+src.w = width;
+src.h = height;
+dst.x = dstX + top.xOffset;
+dst.y = dstY + top.yOffset;
+const SDLImage* srcImage = dynamic_cast<const SDLImage*>(image);
+if (srcImage == NULL)
+{
+throw GCN_EXCEPTION("Trying to draw an image of unknown format, must be an SDLImage.");
+}
+SDL_BlitSurface(srcImage->getSurface(), &src, mTarget, &dst);
+}
+void SDLGraphics::fillRectangle(const Rectangle& rectangle)
+{
+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();
+Rectangle area = rectangle;
+area.x += top.xOffset;
+area.y += top.yOffset;
+if(!area.isIntersecting(top))
+{
+return;
+}
+if (mAlpha)
+{
+int x1 = area.x > top.x ? area.x : top.x;
+int y1 = area.y > top.y ? area.y : top.y;
+int x2 = area.x + area.width < top.x + top.width ? area.x + area.width : top.x + top.width;
+int y2 = area.y + area.height < top.y + top.height ? area.y + area.height : top.y + top.height;
+int x, y;
+SDL_LockSurface(mTarget);
+for (y = y1; y < y2; y++)
+{
+for (x = x1; x < x2; x++)
+{
+SDLputPixelAlpha(mTarget, x, y, mColor);
+}
+}
+SDL_UnlockSurface(mTarget);
+}
+else
+{
+SDL_Rect rect;
+rect.x = area.x;
+rect.y = area.y;
+rect.w = area.width;
+rect.h = area.height;
+Uint32 color = SDL_MapRGBA(mTarget->format,
+mColor.r,
+mColor.g,
+mColor.b,
+mColor.a);
+SDL_FillRect(mTarget, &rect, color);
+}
+}
+void SDLGraphics::drawPoint(int x, int y)
+{
+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();
+x += top.xOffset;
+y += top.yOffset;
+if(!top.isPointInRect(x,y))
+return;
+if (mAlpha)
+{
+SDLputPixelAlpha(mTarget, x, y, mColor);
+}
+else
+{
+SDLputPixel(mTarget, x, y, mColor);
+}
+}
+void SDLGraphics::drawHLine(int x1, int y, int x2)
+{
+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();
+x1 += top.xOffset;
+y += top.yOffset;
+x2 += top.xOffset;
+if (y < top.y || y >= top.y + top.height)
+{
+return;
+}
+if (x1 > x2)
+{
+x1 ^= x2;
+x2 ^= x1;
+x1 ^= x2;
+}
+if (top.x > x1)
+{
+if (top.x > x2)
+{
+return;
+}
+x1 = top.x;
+}
+if (top.x + top.width <= x2)
+{
+if (top.x + top.width <= x1)
+{
+return;
+}
+x2 = top.x + top.width -1;
+}
+int bpp = mTarget->format->BytesPerPixel;
+SDL_LockSurface(mTarget);
+Uint8 *p = (Uint8 *)mTarget->pixels + y * mTarget->pitch + x1 * bpp;
+Uint32 pixel = SDL_MapRGB(mTarget->format,
+mColor.r,
+mColor.g,
+mColor.b);
+switch(bpp)
+{
+case 1:
+for (;x1 <= x2; ++x1)
+{
+*(p++) = pixel;
+}
+break;
+case 2:
+{
+Uint16* q = (Uint16*)p;
+for (;x1 <= x2; ++x1)
+{
+*(q++) = pixel;
+}
+break;
+}
+case 3:
+if(SDL_BYTEORDER == SDL_BIG_ENDIAN)
+{
+for (;x1 <= x2; ++x1)
+{
+p[0] = (pixel >> 16) & 0xff;
+p[1] = (pixel >> 8) & 0xff;
+p[2] = pixel & 0xff;
+p += 3;
+}
+}
+else
+{
+for (;x1 <= x2; ++x1)
+{
+p[0] = pixel & 0xff;
+p[1] = (pixel >> 8) & 0xff;
+p[2] = (pixel >> 16) & 0xff;
+p += 3;
+}
+}
+break;
+case 4:
+{
+Uint32* q = (Uint32*)p;
+for (;x1 <= x2; ++x1)
+{
+if (mAlpha)
+{
+*q = SDLAlpha32(pixel,*q,mColor.a);
+q++;
+}
+else
+{
+*(q++) = pixel;
+}
+}
+break;
+}
+} // end switch
+SDL_UnlockSurface(mTarget);
+}
+void SDLGraphics::drawVLine(int x, int y1, int y2)
+{
+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();
+x += top.xOffset;
+y1 += top.yOffset;
+y2 += top.yOffset;
+if (x < top.x || x >= top.x + top.width)
+{
+return;
+}
+if (y1 > y2)
+{
+y1 ^= y2;
+y2 ^= y1;
+y1 ^= y2;
+}
+if (top.y > y1)
+{
+if (top.y > y2)
+{
+return;
+}
+y1 = top.y;
+}
+if (top.y + top.height <= y2)
+{
+if (top.y + top.height <= y1)
+{
+return;
+}
+y2 = top.y + top.height - 1;
+}
+int bpp = mTarget->format->BytesPerPixel;
+SDL_LockSurface(mTarget);
+Uint8 *p = (Uint8 *)mTarget->pixels + y1 * mTarget->pitch + x * bpp;
+Uint32 pixel = SDL_MapRGB(mTarget->format, mColor.r, mColor.g, mColor.b);
+switch(bpp)
+{
+case 1:
+for (;y1 <= y2; ++y1)
+{
+*p = pixel;
+p += mTarget->pitch;
+}
+break;
+case 2:
+for (;y1 <= y2; ++y1)
+{
+*(Uint16*)p = pixel;
+p += mTarget->pitch;
+}
+break;
+case 3:
+if(SDL_BYTEORDER == SDL_BIG_ENDIAN)
+{
+for (;y1 <= y2; ++y1)
+{
+p[0] = (pixel >> 16) & 0xff;
+p[1] = (pixel >> 8) & 0xff;
+p[2] = pixel & 0xff;
+p += mTarget->pitch;
+}
+}
+else
+{
+for (;y1 <= y2; ++y1)
+{
+p[0] = pixel & 0xff;
+p[1] = (pixel >> 8) & 0xff;
+p[2] = (pixel >> 16) & 0xff;
+p += mTarget->pitch;
+}
+}
+break;
+case 4:
+for (;y1 <= y2; ++y1)
+{
+if (mAlpha)
+{
+*(Uint32*)p = SDLAlpha32(pixel,*(Uint32*)p,mColor.a);
+}
+else
+{
+*(Uint32*)p = pixel;
+}
+p += mTarget->pitch;
+}
+break;
+} // end switch
+SDL_UnlockSurface(mTarget);
+}
+void SDLGraphics::drawRectangle(const Rectangle& rectangle)
+{
+int x1 = rectangle.x;
+int x2 = rectangle.x + rectangle.width - 1;
+int y1 = rectangle.y;
+int y2 = rectangle.y + rectangle.height - 1;
+drawHLine(x1, y1, x2);
+drawHLine(x1, y2, x2);
+drawVLine(x1, y1, y2);
+drawVLine(x2, y1, y2);
+}
+void SDLGraphics::drawLine(int x1, int y1, int x2, int y2)
+{
+if (x1 == x2)
+{
+drawVLine(x1, y1, y2);
+return;
+}
+if (y1 == y2)
+{
+drawHLine(x1, y1, x2);
+return;
+}
+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();
+x1 += top.xOffset;
+y1 += top.yOffset;
+x2 += top.xOffset;
+y2 += top.yOffset;
+// Draw a line with Bresenham
+int dx = ABS(x2 - x1);
+int dy = ABS(y2 - y1);
+if (dx > dy)
+{
+if (x1 > x2)
+{
+// swap x1, x2
+x1 ^= x2;
+x2 ^= x1;
+x1 ^= x2;
+// swap y1, y2
+y1 ^= y2;
+y2 ^= y1;
+y1 ^= y2;
+}
+if (y1 < y2)
+{
+int y = y1;
+int p = 0;
+for (int x = x1; x <= x2; x++)
+{
+if (top.isPointInRect(x, y))
+{
+if (mAlpha)
+{
+SDLputPixelAlpha(mTarget, x, y, mColor);
+}
+else
+{
+SDLputPixel(mTarget, x, y, mColor);
+}
+}
+p += dy;
+if (p * 2 >= dx)
+{
+y++;
+p -= dx;
+}
+}
+}
+else
+{
+int y = y1;
+int p = 0;
+for (int x = x1; x <= x2; x++)
+{
+if (top.isPointInRect(x, y))
+{
+if (mAlpha)
+{
+SDLputPixelAlpha(mTarget, x, y, mColor);
+}
+else
+{
+SDLputPixel(mTarget, x, y, mColor);
+}
+}
+p += dy;
+if (p * 2 >= dx)
+{
+y--;
+p -= dx;
+}
+}
+}
+}
+else
+{
+if (y1 > y2)
+{
+// 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);
+}
+}

Mercurial > fife-parpg

comparison ext/guichan-0.8.1/src/sdl/sdlgraphics.cpp @ 0:4a0efb7baf70