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#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <gtk/gtk.h>
#include <gdk/gdkkeysyms.h>
#include "drawing.h"
#include "support.h"
static GdkDrawable *drawable;
static GdkGC *gc;
static GdkColor clrfg;
static GdkColor clrbg;
static int pango_ready;
static PangoContext *pangoctx;
static PangoLayout *pangolayout;
void
draw_begin (uintptr_t canvas) {
drawable = GDK_DRAWABLE (canvas);
gc = gdk_gc_new (drawable);
}
void
draw_end (void) {
if (pango_ready) {
g_object_unref (pangolayout);
g_object_unref (pangoctx);
pango_ready = 0;
}
drawable = NULL;
if (gc) {
g_object_unref (gc);
gc = NULL;
}
}
void
draw_copy (uintptr_t dest_canvas, uintptr_t src_canvas, int dx, int dy, int sx, int sy, int w, int h) {
gdk_draw_drawable (GDK_DRAWABLE (dest_canvas), gc, GDK_DRAWABLE (src_canvas), dx, dy, sx, sy, w, h);
}
uintptr_t
draw_load_pixbuf (const char *fname) {
return (uintptr_t)create_pixbuf (fname);
}
void
draw_pixbuf (uintptr_t dest_canvas, uintptr_t pixbuf, int dx, int dy, int sx, int sy, int w, int h) {
gdk_pixbuf_render_to_drawable (GDK_PIXBUF (pixbuf), GDK_DRAWABLE (dest_canvas), gc, sx, sy, dx, dy, w, h, GDK_RGB_DITHER_NONE, 0, 0);
}
void
draw_get_canvas_size (uintptr_t canvas, int *w, int *h) {
gdk_drawable_get_size (GDK_DRAWABLE (canvas), w, h);
}
void
draw_set_fg_color (float *rgb) {
clrfg.red = rgb[0] * 0xffff;
clrfg.green = rgb[1] * 0xffff;
clrfg.blue = rgb[2] * 0xffff;
gdk_gc_set_rgb_fg_color (gc, &clrfg);
}
void
draw_set_bg_color (float *rgb) {
clrbg.red = rgb[0] * 0xffff;
clrbg.green = rgb[1] * 0xffff;
clrbg.blue = rgb[2] * 0xffff;
gdk_gc_set_rgb_bg_color (gc, &clrbg);
}
void
draw_line (float x1, float y1, float x2, float y2) {
gdk_draw_line (drawable, gc, x1, y1, x2, y2);
}
void
draw_rect (float x, float y, float w, float h, int fill) {
gdk_draw_rectangle (drawable, gc, fill, x, y, w, h);
}
static inline void
draw_init_font (void) {
if (!pango_ready) {
pangoctx = gdk_pango_context_get ();
pangolayout = pango_layout_new (pangoctx);
GtkStyle *style = gtk_widget_get_default_style ();
PangoFontDescription *desc = style->font_desc;
pango_layout_set_font_description (pangolayout, desc);
pango_ready = 1;
}
}
float
draw_get_font_size (void) {
GdkScreen *screen = gdk_screen_get_default ();
float dpi = gdk_screen_get_resolution (screen);
GtkStyle *style = gtk_widget_get_default_style ();
PangoFontDescription *desc = style->font_desc;
return (float)pango_font_description_get_size (desc) / PANGO_SCALE * dpi / 72;
}
void
draw_text (float x, float y, const char *text) {
draw_init_font ();
pango_layout_set_text (pangolayout, text, -1);
gdk_draw_layout_with_colors (drawable, gc, x, y, pangolayout, &clrfg, &clrbg);
//gdk_draw_layout (drawable, gc, x, y, pangolayout);
}
void
draw_get_text_extents (const char *text, int len, int *w, int *h) {
draw_init_font ();
pango_layout_set_text (pangolayout, text, len);
PangoRectangle ext;
pango_layout_get_pixel_extents (pangolayout, &ext, NULL);
*w = ext.width;
*h = ext.height;
}
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