diff options
Diffstat (limited to 'src/GtkScaledImage.cpp')
| -rw-r--r-- | src/GtkScaledImage.cpp | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/src/GtkScaledImage.cpp b/src/GtkScaledImage.cpp new file mode 100644 index 0000000..6f41c11 --- /dev/null +++ b/src/GtkScaledImage.cpp @@ -0,0 +1,62 @@ +#include "../include/GtkScaledImage.hpp" +#include <gdkmm/pixbuf.h> + +namespace dchat +{ + GtkScaledImage::GtkScaledImage(const boost::filesystem::path &filepath) + { + try + { + auto pixbuf = Gdk::Pixbuf::create_from_file(filepath.string()); + Cairo::Format format = pixbuf->get_has_alpha() ? Cairo::Format::FORMAT_ARGB32 : Cairo::Format::FORMAT_RGB24; + surface = Cairo::ImageSurface::create(format, pixbuf->get_width(), pixbuf->get_height()); + unsigned char *pixels = surface->get_data(); + surface->flush(); + char *p = (char*)pixbuf->get_pixels(); + // TODO: Optimize this + if(format == Cairo::Format::FORMAT_ARGB32) + { + 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]; + } + } + else + { + for(int i = 0; i < surface->get_stride() * surface->get_height(); i += 3) + { + pixels[i + 0] = p[i + 2]; + pixels[i + 1] = p[i + 1]; + pixels[i + 2] = p[i + 0]; + } + } + //memcpy(pixels, textureData, surface->get_stride() * surface->get_height()); + surface->mark_dirty(); + } + catch(std::exception &e) + { + std::string errMsg = "Failed to create scaled image, reason: "; + errMsg += e.what(); + throw GtkScaledImageException(errMsg); + } + } + + void GtkScaledImage::draw(const Cairo::RefPtr<Cairo::Context> &cairo, int width, int height, bool circularMask) + { + if(circularMask) + { + 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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