initial commit: wip

font.c

@@ -0,0 +1,92 @@
+#include "font.h"
+#include <stdlib.h>
+#include <string.h>
+#include <stdbool.h>
+
+struct font {
+    char *face;
+    int size;
+    bool italic;
+    bool bold;
+
+    int y_offset;
+    cairo_font_options_t *cairo_font_options;
+};
+
+struct font *
+font_new(const char *face, int size, bool italic, bool bold, int y_offset)
+{
+    struct font *font = malloc(sizeof(*font));
+
+    font->face = strdup(face);
+    font->size = size;
+    font->italic = italic;
+    font->bold = bold;
+    font->y_offset = y_offset;
+
+    font->cairo_font_options = cairo_font_options_create();
+    cairo_font_options_set_antialias(
+        font->cairo_font_options, CAIRO_ANTIALIAS_DEFAULT);
+    //antialias ? CAIRO_ANTIALIAS_SUBPIXEL : CAIRO_ANTIALIAS_NONE);
+
+    return font;
+}
+
+struct font *
+font_clone(const struct font *font)
+{
+    return font_new(font->face, font->size, font->italic, font->bold, font->y_offset);
+}
+
+void
+font_destroy(struct font *font)
+{
+    cairo_font_options_destroy(font->cairo_font_options);
+    free(font->face);
+    free(font);
+}
+
+const char *
+font_face(const struct font *font)
+{
+    return font->face;
+}
+
+int
+font_size(const struct font *font)
+{
+    return font->size;
+}
+
+bool
+font_is_italic(const struct font *font)
+{
+    return font->italic;
+}
+
+bool
+font_is_bold(const struct font *font)
+{
+    return font->bold;
+}
+
+int
+font_y_offset(const struct font *font)
+{
+    return font->y_offset;
+}
+
+cairo_scaled_font_t *
+font_use_in_cairo(const struct font *font, cairo_t *cr)
+{
+    cairo_font_slant_t slant = font->italic
+        ? CAIRO_FONT_SLANT_ITALIC : CAIRO_FONT_SLANT_NORMAL;
+    cairo_font_weight_t weight = font->bold
+        ? CAIRO_FONT_WEIGHT_BOLD : CAIRO_FONT_WEIGHT_NORMAL;
+
+    cairo_select_font_face(cr, font->face, slant, weight);
+    cairo_set_font_size(cr, font->size);
+    cairo_set_font_options(cr, font->cairo_font_options);
+
+    return cairo_get_scaled_font(cr);
+}