--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/ext/guichan-0.8.1/src/allegro/allegrographics.cpp	Sun Jun 29 18:44:17 2008 +0000
@@ -0,0 +1,343 @@
+/*      _______   __   __   __   ______   __   __   _______   __   __
+ *     / _____/\ / /\ / /\ / /\ / ____/\ / /\ / /\ / ___  /\ /  |\/ /\
+ *    / /\____\// / // / // / // /\___\// /_// / // /\_/ / // , |/ / /
+ *   / / /__   / / // / // / // / /    / ___  / // ___  / // /| ' / /
+ *  / /_// /\ / /_// / // / // /_/_   / / // / // /\_/ / // / |  / /
+ * /______/ //______/ //_/ //_____/\ /_/ //_/ //_/ //_/ //_/ /|_/ /
+ * \______\/ \______\/ \_\/ \_____\/ \_\/ \_\/ \_\/ \_\/ \_\/ \_\/
+ *
+ * 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/allegro/allegrographics.hpp"
+#include "guichan/allegro/allegroimage.hpp"
+#include "guichan/rectangle.hpp"
+#include "guichan/exception.hpp"
+#include "guichan/cliprectangle.hpp"
+#include "guichan/color.hpp"
+
+namespace gcn
+{
+    AllegroGraphics::AllegroGraphics()
+    {
+        mTarget = NULL;
+        mClipNull = false;
+    }
+
+    AllegroGraphics::AllegroGraphics(BITMAP *target)
+    {
+        mTarget = target;
+    }
+
+    AllegroGraphics::~AllegroGraphics()
+    {
+    }
+
+    void AllegroGraphics::setTarget(BITMAP *target)
+    {
+        mTarget = target;
+    }
+
+    BITMAP *AllegroGraphics::getTarget()
+    {
+        return mTarget;
+    }
+
+    void AllegroGraphics::_beginDraw()
+    {
+        if (mTarget == NULL)
+        {
+            throw GCN_EXCEPTION("Target BITMAP is null, set it with setTarget first.");
+        }
+
+        // push a clip area the size of the target bitmap
+        pushClipArea(Rectangle(0, 0, mTarget->w, mTarget->h));
+    }
+
+    void AllegroGraphics::_endDraw()
+    {
+        // pop the clip area pushed in _beginDraw
+        popClipArea();
+    }
+
+    bool AllegroGraphics::pushClipArea(Rectangle area)
+    {
+        bool result = Graphics::pushClipArea(area);
+
+        const ClipRectangle& cr = mClipStack.top();
+
+        // Allegro won't let you set clip areas
+        // that have zero width or height
+        // so we have to check for that.
+        if (cr.width == 0 || cr.height == 0)
+        {
+            mClipNull = true;
+        }
+        else
+        {
+            mClipNull = false;
+#if ALLEGRO_VERSION == 4 && ALLEGRO_SUB_VERSION == 0
+            set_clip(mTarget,
+                     cr.x,
+                     cr.y,
+                     cr.x + cr.width - 1,
+                     cr.y + cr.height - 1);
+#else
+            set_clip_rect(mTarget,
+                          cr.x,
+                          cr.y,
+                          cr.x + cr.width - 1,
+                          cr.y + cr.height - 1);
+#endif
+        }
+
+        return result;
+    }
+
+    void AllegroGraphics::popClipArea()
+    {
+        Graphics::popClipArea();
+
+        if (mClipStack.empty())
+        {
+            return;
+        }
+
+        const ClipRectangle& cr = mClipStack.top();
+
+        // Allegro won't let you set clip areas
+        //that have zero width or height
+        // so we have to check for that.
+        if (cr.width == 0 || cr.height == 0)
+        {
+            mClipNull = true;
+        }
+        else
+        {
+            mClipNull = false;
+#if ALLEGRO_VERSION == 4 && ALLEGRO_SUB_VERSION == 0
+            set_clip(mTarget,
+                     cr.x,
+                     cr.y,
+                     cr.x + cr.width - 1,
+                     cr.y + cr.height - 1);
+#else
+            set_clip_rect(mTarget,
+                          cr.x,
+                          cr.y,
+                          cr.x + cr.width - 1,
+                          cr.y + cr.height - 1);
+#endif
+        }
+    }
+
+    void AllegroGraphics::drawImage(const Image* image,
+                                    int srcX,
+                                    int srcY,
+                                    int dstX,
+                                    int dstY,
+                                    int width,
+                                    int height)
+    {
+        if (mClipNull)
+        {
+            return;
+        }
+
+        if (mClipStack.empty())
+        {
+            throw GCN_EXCEPTION("Clip stack is empty, perhaps you called a draw funtion "
+                                "outside of _beginDraw() and _endDraw()?");
+        }
+
+        const int xOffset = mClipStack.top().xOffset;
+        const int yOffset = mClipStack.top().yOffset;
+
+        const AllegroImage* srcImage = dynamic_cast<const AllegroImage*>(image);
+
+        if (srcImage == NULL)
+        {
+            throw GCN_EXCEPTION("Trying to draw an image of unknown format, must be an AllegroImage.");
+        }
+
+        masked_blit(srcImage->getBitmap(),
+                    mTarget,
+                    srcX,
+                    srcY,
+                    dstX + xOffset,
+                    dstY + yOffset,
+                    width,
+                    height);
+    }
+
+    void AllegroGraphics::drawPoint(int x, int y)
+    {
+        if (mClipNull)
+        {
+            return;
+        }
+
+        if (mClipStack.empty())
+        {
+            throw GCN_EXCEPTION("Clip stack is empty, perhaps you called a draw funtion "
+                                "outside of _beginDraw() and _endDraw()?");
+        }
+
+        const int xOffset = mClipStack.top().xOffset;
+        const int yOffset = mClipStack.top().yOffset;
+
+        putpixel(mTarget,
+                 x + xOffset,
+                 y + yOffset,
+                 mAllegroColor);
+    }
+
+    void AllegroGraphics::drawLine(int x1, int y1, int x2, int y2)
+    {
+        if (mClipNull)
+        {
+            return;
+        }
+
+        if (mClipStack.empty())
+        {
+            throw GCN_EXCEPTION("Clip stack is empty, perhaps you called a draw funtion "
+                                "outside of _beginDraw() and _endDraw()?");
+        }
+
+        const int xOffset = mClipStack.top().xOffset;
+        const int yOffset = mClipStack.top().yOffset;
+
+        line(mTarget,
+             x1 + xOffset,
+             y1 + yOffset,
+             x2 + xOffset,
+             y2 + yOffset,
+             mAllegroColor);
+    }
+
+    void AllegroGraphics::drawRectangle(const Rectangle& rectangle)
+    {
+        if (mClipNull)
+        {
+            return;
+        }
+
+        if (mClipStack.empty())
+        {
+            throw GCN_EXCEPTION("Clip stack is empty, perhaps you called a draw funtion " 
+                                "outside of _beginDraw() and _endDraw()?");
+        }
+
+        const int xOffset = mClipStack.top().xOffset;
+        const int yOffset = mClipStack.top().yOffset;
+
+        rect(mTarget,
+             rectangle.x + xOffset,
+             rectangle.y + yOffset,
+             rectangle.x + rectangle.width - 1 + xOffset,
+             rectangle.y + rectangle.height - 1 + yOffset,
+             mAllegroColor);
+    }
+
+    void AllegroGraphics::fillRectangle(const Rectangle& rectangle)
+    {
+        if (mClipNull)
+        {
+            return;
+        }
+
+        if (mClipStack.empty())
+        {
+            throw GCN_EXCEPTION("Clip stack is empty, perhaps you called a draw funtion " 
+                                "outside of _beginDraw() and _endDraw()?");
+        }
+
+        const int xOffset = mClipStack.top().xOffset;
+        const int yOffset = mClipStack.top().yOffset;
+
+        rectfill(mTarget,
+                 rectangle.x + xOffset,
+                 rectangle.y + yOffset,
+                 rectangle.x + rectangle.width - 1 + xOffset,
+                 rectangle.y + rectangle.height - 1 + yOffset,
+                 mAllegroColor);
+    }
+
+    void AllegroGraphics::setColor(const Color& color)
+    {
+        mColor = color;
+        mAllegroColor = makecol(color.r, color.g, color.b);
+
+        if (color.a != 255)
+        {
+            set_trans_blender(255, 255, 255, color.a);
+            drawing_mode(DRAW_MODE_TRANS, NULL, 0, 0);
+        }
+        else
+        {
+            solid_mode();
+        }
+    }
+
+    const Color& AllegroGraphics::getColor() const
+    {
+        return mColor;
+    }
+
+    int AllegroGraphics::getAllegroColor() const
+    {
+        return mAllegroColor;
+    }
+
+    void AllegroGraphics::drawBitmap(BITMAP* bitmap, int dstX, int dstY)
+    {
+        const int xOffset = mClipStack.top().xOffset;
+        const int yOffset = mClipStack.top().yOffset;
+
+        masked_blit(bitmap,
+                    mTarget,
+                    0,
+                    0,
+                    dstX + xOffset,
+                    dstY + yOffset,
+                    bitmap->w,
+                    bitmap->h);
+    }
+}