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fixed ratio image drawing support

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This commit is contained in:
Eduardo Bart
2011-10-28 21:56:45 -02:00
parent 6c200bd764
commit f4f0d7e960
10 changed files with 66 additions and 68 deletions
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40
src/framework/graphics/image.cpp
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@@ -27,37 +27,45 @@
#include <framework/otml/otml.h>
Image::Image(TexturePtr texture, Rect textureCoords)
Image::Image()
{
m_texture = texture;
if(!textureCoords.isValid())
m_textureCoords = Rect(0, 0, m_texture->getSize());
else
m_textureCoords = textureCoords;
m_fixedRatio = false;
}
ImagePtr Image::loadFromOTML(const OTMLNodePtr& imageNode)
void Image::loadFromOTML(const OTMLNodePtr& imageNode)
{
// load configs from otml node
std::string source = imageNode->hasValue() ? imageNode->value() : imageNode->valueAt("source");
bool smooth = imageNode->valueAt("smooth", false);
Rect textureCoords = imageNode->valueAt("coords", Rect());
m_textureCoords = imageNode->valueAt("coords", Rect());
m_fixedRatio = imageNode->valueAt("fixed ratio", false);
// load texture
TexturePtr texture = g_textures.getTexture(source);
if(!texture)
m_texture = g_textures.getTexture(source);
if(!m_texture)
throw OTMLException(imageNode, "could not load image texture");
// enable texture bilinear filter
if(smooth)
texture->enableBilinearFilter();
// create image
return ImagePtr(new Image(texture, textureCoords));
m_texture->enableBilinearFilter();
}
void Image::draw(const Rect& screenCoords)
{
if(m_texture)
g_graphics.drawTexturedRect(screenCoords, m_texture, m_textureCoords);
if(m_texture) {
if(m_fixedRatio) {
const Size& texSize = m_texture->getSize();
Size texCoordsSize = screenCoords.size();
texCoordsSize.scale(texSize, Fw::KeepAspectRatio);
Point texCoordsOffset;
if(texSize.height() > texCoordsSize.height())
texCoordsOffset.y = (texSize.height() - texCoordsSize.height())/2;
else if(texSize.width() > texCoordsSize.width())
texCoordsOffset.x = (texSize.width() - texCoordsSize.width())/2;
g_graphics.drawTexturedRect(screenCoords, m_texture, Rect(texCoordsOffset, texCoordsSize));
} else {
g_graphics.drawTexturedRect(screenCoords, m_texture, m_textureCoords);
}
}
}