/* _______ __ __ __ ______ __ __ _______ __ __
* / _____/\ / /\ / /\ / /\ / ____/\ / /\ / /\ / ___ /\ / |\/ /\
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*
* Copyright (c) 2004, 2005, 2006, 2007 Olof Naessén and Per Larsson
*
* Js_./
* Per Larsson a.k.a finalman _RqZ{a<^_aa
* Olof Naessén a.k.a jansem/yakslem _asww7!uY`> )\a//
* _Qhm`] _f "'c 1!5m
* Visit: http://guichan.darkbits.org )Qk<P ` _: :+' .' "{[
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* 1. Redistributions of source code must .$%w\/]Q . ."' . mj$
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/*
* 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);
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;
}
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;
}
dstX += mClipStack.top().xOffset;
dstY += 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, dstY, width, height);
}
void AllegroGraphics::drawPoint(int x, int y)
{
if (mClipNull)
{
return;
}
int xOffset = mClipStack.top().xOffset;
int yOffset = mClipStack.top().yOffset;
putpixel(mTarget,
x + xOffset,
y + yOffset,
mAlColor);
}
void AllegroGraphics::drawLine(int x1, int y1, int x2, int y2)
{
if (mClipNull)
{
return;
}
int xOffset = mClipStack.top().xOffset;
int yOffset = mClipStack.top().yOffset;
line(mTarget,
x1 + xOffset,
y1 + yOffset,
x2 + xOffset,
y2 + yOffset,
mAlColor);
}
void AllegroGraphics::drawRectangle(const Rectangle& rectangle)
{
if (mClipNull)
{
return;
}
int xOffset = mClipStack.top().xOffset;
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,
mAlColor);
}
void AllegroGraphics::fillRectangle(const Rectangle& rectangle)
{
if (mClipNull)
{
return;
}
int xOffset = mClipStack.top().xOffset;
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,
mAlColor);
}
void AllegroGraphics::setColor(const Color& color)
{
mColor = color;
mAlColor = 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()
{
return mColor;
}
}