bsnes/hiro/gtk/font.cpp

82 lines
2.4 KiB
C++

#if defined(Hiro_Font)
namespace hiro {
auto pFont::serif(unsigned size, string style) -> string {
if(size == 0) size = 8;
if(style == "") style = "Normal";
return {"Serif, ", size, ", ", style};
}
auto pFont::sans(unsigned size, string style) -> string {
if(size == 0) size = 8;
if(style == "") style = "Normal";
return {"Sans, ", size, ", ", style};
}
auto pFont::monospace(unsigned size, string style) -> string {
if(size == 0) size = 8;
return {"Liberation Mono, ", size, ", ", style};
}
auto pFont::size(string font, string text) -> Size {
PangoFontDescription* description = create(font);
Size size = pFont::size(description, text);
free(description);
return size;
}
auto pFont::create(string description) -> PangoFontDescription* {
lstring part = description.split(",", 2L).strip();
string family = "Sans";
unsigned size = 8u;
bool bold = false;
bool italic = false;
if(part[0] != "") family = part[0];
if(part.size() >= 2) size = decimal(part[1]);
if(part.size() >= 3) bold = (bool)part[2].find("Bold");
if(part.size() >= 3) italic = (bool)part[2].find("Italic");
PangoFontDescription* font = pango_font_description_new();
pango_font_description_set_family(font, family);
pango_font_description_set_size(font, size * PANGO_SCALE);
pango_font_description_set_weight(font, !bold ? PANGO_WEIGHT_NORMAL : PANGO_WEIGHT_BOLD);
pango_font_description_set_style(font, !italic ? PANGO_STYLE_NORMAL : PANGO_STYLE_OBLIQUE);
return font;
}
auto pFont::free(PangoFontDescription* font) -> void {
pango_font_description_free(font);
}
auto pFont::size(PangoFontDescription* font, string text) -> Size {
PangoContext* context = gdk_pango_context_get_for_screen(gdk_screen_get_default());
PangoLayout* layout = pango_layout_new(context);
pango_layout_set_font_description(layout, font);
pango_layout_set_text(layout, text, -1);
int width = 0, height = 0;
pango_layout_get_pixel_size(layout, &width, &height);
g_object_unref((gpointer)layout);
return {width, height};
}
auto pFont::setFont(GtkWidget* widget, string font) -> void {
auto gtkFont = pFont::create(font);
pFont::setFont(widget, (gpointer)gtkFont);
pFont::free(gtkFont);
}
auto pFont::setFont(GtkWidget* widget, gpointer font) -> void {
if(font == nullptr) return;
gtk_widget_modify_font(widget, (PangoFontDescription*)font);
if(GTK_IS_CONTAINER(widget)) {
gtk_container_foreach(GTK_CONTAINER(widget), (GtkCallback)pFont::setFont, font);
}
}
}
#endif