Try to improve font rendering on Windows by using freetype for pango/cairo.

[dcpomatic.git] / hacks / text.cc

diff --git a/hacks/text.cc b/hacks/text.cc
new file mode 100644 (file)
index 0000000..bf391a3
--- /dev/null
+++ b/hacks/text.cc
@@ -0,0 +1,59 @@
+#include <cairomm/cairomm.h>
+#include <pangomm.h>
+#include <pangomm/init.h>
+#include <glibmm.h>
+#include <stdint.h>
+
+int main ()
+{
+#ifdef __MINGW32__
+       putenv ("PANGOCAIRO_BACKEND=fontconfig");
+       putenv ("FONTCONFIG_PATH=.");
+#endif
+
+       Pango::init ();
+
+       int const width = 640;
+       int const height = 480;
+       uint8_t* data = new uint8_t[width * height * 4];
+
+       Cairo::RefPtr<Cairo::ImageSurface> surface = Cairo::ImageSurface::create (
+               data,
+               Cairo::FORMAT_ARGB32,
+               width, height,
+               /* Cairo ARGB32 means first byte blue, second byte green, third byte red, fourth byte alpha */
+               Cairo::ImageSurface::format_stride_for_width (Cairo::FORMAT_ARGB32, width)
+               );
+
+       Cairo::RefPtr<Cairo::Context> context = Cairo::Context::create (surface);
+
+       Glib::RefPtr<Pango::Layout> layout = Pango::Layout::create (context);
+
+       context->set_source_rgb (1, 0.2, 0.3);
+       context->rectangle (0, 0, width, height);
+       context->fill ();
+
+       layout->set_alignment (Pango::ALIGN_LEFT);
+
+       context->set_line_width (1);
+       // Cairo::FontOptions fo;
+       // context->get_font_options (fo);
+       // fo.set_antialias (Cairo::ANTIALIAS_NONE);
+       // context->set_font_options (fo);
+
+       Pango::FontDescription font ("Arial");
+       layout->set_font_description (font);
+       layout->set_markup ("Hello world!");
+
+       layout->update_from_cairo_context (context);
+
+       context->set_source_rgb (1, 1, 1);
+       context->set_line_width (0);
+       context->move_to (0, 0);
+       context->scale (2, 2);
+       layout->show_in_cairo_context (context);
+
+       surface->write_to_png ("text.png");
+
+       return 0;
+}