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#include "../include/GtkGif.hpp"
namespace dchat
{
GtkGif::GtkGif(StringView fileContent) :
Gif(fileContent)
{
}
bool GtkGif::createTexture(int width, int height)
{
surface = Cairo::ImageSurface::create(Cairo::Format::FORMAT_ARGB32, width, height);
return true;
}
void GtkGif::updateTexture(void *textureData)
{
unsigned char *pixels = surface->get_data();
surface->flush();
char *p = (char*)textureData;
// TODO: Optimize this
for(int i = 0; i < surface->get_stride() * surface->get_height(); i += 4)
{
pixels[i + 0] = p[i + 2];
pixels[i + 1] = p[i + 1];
pixels[i + 2] = p[i + 0];
pixels[i + 3] = p[i + 3];
}
//memcpy(pixels, textureData, surface->get_stride() * surface->get_height());
surface->mark_dirty();
}
void GtkGif::draw(const Cairo::RefPtr<Cairo::Context> &cairo, int width, int height)
{
update();
int minSize = std::min(width/2, height/2);
cairo->arc(width/2, height/2, minSize, 0.0, 2.0 * M_PI);
cairo->clip();
double scaleX = (double)width / (double)surface->get_width();
double scaleY = (double)height / (double)surface->get_height();
cairo->scale(scaleX, scaleY);
cairo->set_source(surface, 0.0, 0.0);
cairo->paint();
}
}
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