--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/include/mb_graph_engine_cairo.h	Thu Nov 12 21:22:30 2009 +0800
@@ -0,0 +1,206 @@
+#ifndef __MB_GE_CAIRO_H_
+#define __MB_GE_CAIRO_H_
+
+#include <stdio.h>
+#include <cairo.h>
+#include <cairo-xlib.h>
+#include "mb_img_ldr.h"
+
+/*! \defgroup mb_ge_cairo MadButterfly Graphic Engine with Cairo
+ * @{
+ */
+#define MBE_OPERATOR_CLEAR CAIRO_OPERATOR_CLEAR
+#define MBE_OPERATOR_SOURCE CAIRO_OPERATOR_SOURCE
+#define MBE_STATUS_SUCCESS CAIRO_STATUS_SUCCESS
+
+#define mbe_ft_font_face_create_for_pattern cairo_ft_font_face_create_for_pattern
+#define mbe_image_surface_create_from_png cairo_image_surface_create_from_png
+#define mbe_pattern_add_color_stop_rgba cairo_pattern_add_color_stop_rgba
+#define mbe_pattern_create_for_surface cairo_pattern_create_for_surface
+#define mbe_scaled_font_text_extents cairo_scaled_font_text_extents
+#define mbe_image_surface_get_stride cairo_image_surface_get_stride
+#define mbe_image_surface_get_height cairo_image_surface_get_height
+#define mbe_image_surface_get_width cairo_image_surface_get_width
+#define mbe_image_surface_get_data cairo_image_surface_get_data
+#define mbe_scaled_font_reference cairo_scaled_font_reference
+#define mbe_pattern_create_radial cairo_pattern_create_radial
+#define mbe_pattern_create_linear cairo_pattern_create_linear
+#define mbe_xlib_surface_create cairo_xlib_surface_create
+#define mbe_scaled_font_destroy cairo_scaled_font_destroy
+#define mbe_font_face_reference cairo_font_face_reference
+#define mbe_set_source_surface cairo_set_source_surface
+#define mbe_scaled_font_status cairo_scaled_font_status
+#define mbe_pattern_set_matrix cairo_pattern_set_matrix
+#define mbe_font_face_destroy cairo_font_face_destroy
+#define mbe_paint_with_alpha cairo_paint_with_alpha
+#define mbe_font_face_status cairo_font_face_status
+#define mbe_surface_destroy cairo_surface_destroy
+#define mbe_set_source_rgba cairo_set_source_rgba
+#define mbe_set_scaled_font cairo_set_scaled_font
+#define mbe_pattern_destroy cairo_pattern_destroy
+#define mbe_get_scaled_font cairo_get_scaled_font
+#define mbe_set_source_rgb cairo_set_source_rgb
+#define mbe_set_line_width cairo_set_line_width
+#define mbe_get_font_face cairo_get_font_face
+#define mbe_fill_preserve cairo_fill_preserve
+#define mbe_set_operator cairo_set_operator
+#define mbe_get_operator cairo_get_operator
+#define mbe_set_source cairo_set_source
+#define mbe_reset_clip cairo_reset_clip
+#define mbe_get_target cairo_get_target
+#define mbe_close_path cairo_close_path
+#define mbe_text_path cairo_text_path
+#define mbe_show_text cairo_show_text
+#define mbe_rectangle cairo_rectangle
+#define mbe_in_stroke cairo_in_stroke
+#define mbe_new_path cairo_new_path
+#define mbe_curve_to cairo_curve_to
+#define mbe_restore cairo_restore
+#define mbe_move_to cairo_move_to
+#define mbe_line_to cairo_line_to
+#define mbe_in_fill cairo_in_fill
+#define mbe_destroy cairo_destroy
+#define mbe_stroke cairo_stroke
+#define mbe_create cairo_create
+#define mbe_paint cairo_paint
+#define mbe_save cairo_save
+#define mbe_fill cairo_fill
+#define mbe_clip cairo_clip
+
+typedef cairo_text_extents_t mbe_text_extents_t;
+typedef cairo_scaled_font_t mbe_scaled_font_t;
+typedef cairo_font_face_t mbe_font_face_t;
+typedef cairo_operator_t mbe_operator_t;
+typedef cairo_surface_t mbe_surface_t;
+typedef cairo_pattern_t mbe_pattern_t;
+typedef cairo_status_t mbe_status_t;
+typedef cairo_matrix_t mbe_matrix_t;
+typedef cairo_t mbe_t;
+typedef float co_aix;
+
+
+extern mbe_font_face_t * mbe_query_font_face(const char *family,
+					     int slant, int weight);
+extern void mbe_free_font_face(mbe_font_face_t *face);
+
+
+static mbe_scaled_font_t *
+mbe_scaled_font_create(mbe_font_face_t *face, mbe_matrix_t *fnt_mtx,
+		       mbe_matrix_t *ctm) {
+    cairo_font_options_t *options;
+    mbe_scaled_font_t *scaled;
+
+    options = cairo_font_options_create();
+    if(options == NULL)
+	return NULL;
+    
+    scaled = cairo_scaled_font_create(face, fnt_mtx, ctm, options);
+
+    cairo_font_options_destroy(options);
+    
+    return scaled;
+}
+
+static mbe_surface_t *
+mbe_image_surface_create_for_data(unsigned char *data,
+				  mb_img_fmt_t fmt,
+				  int width, int height,
+				  int stride) {
+    cairo_format_t _fmt;
+    
+    switch(fmt) {
+    case MB_IFMT_ARGB32:
+	_fmt = CAIRO_FORMAT_ARGB32;
+	break;
+    case MB_IFMT_RGB24:
+	_fmt = CAIRO_FORMAT_RGB24;
+	break;
+    case MB_IFMT_A8:
+	_fmt = CAIRO_FORMAT_A8;
+	break;
+    case MB_IFMT_A1:
+	_fmt = CAIRO_FORMAT_A1;
+	break;
+    default:
+	return NULL;
+    }
+    return cairo_image_surface_create_for_data(data, _fmt,
+					       width, height, stride);
+}
+
+static mb_img_fmt_t
+mbe_image_surface_get_format(mbe_surface_t *surface) {
+    cairo_format_t _fmt;
+    mb_img_fmt_t fmt;
+
+    _fmt = cairo_image_surface_get_format(surface);
+    switch(_fmt) {
+    case CAIRO_FORMAT_ARGB32:
+	fmt = MB_IFMT_ARGB32;
+	break;
+    case CAIRO_FORMAT_RGB24:
+	fmt = MB_IFMT_RGB24;
+	break;
+    case CAIRO_FORMAT_A8:
+	fmt = MB_IFMT_A8;
+	break;
+    case CAIRO_FORMAT_A1:
+	fmt = MB_IFMT_A1;
+	break;
+    default:
+	fmt = MB_IFMT_DUMMY;
+	break;
+    }
+
+    return fmt;
+}
+
+static mbe_surface_t *
+mbe_image_surface_create(mb_img_fmt_t fmt, int width, int height) {
+    cairo_format_t _fmt;
+    
+    switch(fmt) {
+    case MB_IFMT_ARGB32:
+	_fmt = CAIRO_FORMAT_ARGB32;
+	break;
+    case MB_IFMT_RGB24:
+	_fmt = CAIRO_FORMAT_RGB24;
+	break;
+    case MB_IFMT_A8:
+	_fmt = CAIRO_FORMAT_A8;
+	break;
+    case MB_IFMT_A1:
+	_fmt = CAIRO_FORMAT_A1;
+	break;
+    default:
+	return NULL;
+    }
+    
+    return cairo_image_surface_create(_fmt, width, height);
+}
+
+static void
+mbe_transform(mbe_t *mbe, const co_aix matrix[6]) {
+    cairo_matrix_t cmtx;
+
+    cmtx.xx = matrix[0];
+    cmtx.xy = matrix[1];
+    cmtx.x0 = matrix[2];
+    cmtx.yx = matrix[3];
+    cmtx.yy = matrix[4];
+    cmtx.y0 = matrix[5];
+
+    cairo_transform(mbe, &cmtx);
+}
+
+static void
+mbe_arc(mbe_t *mbe, co_aix x, co_aix y, co_aix radius,
+	co_aix angle_start, co_aix angle_stop) {
+    if(angle_start <= angle_stop)
+	cairo_arc(mbe, x, y, radius, angle_start, angle_stop);
+    else
+	cairo_arc_negative(mbe, x, y, radius, angle_start, angle_stop);
+}
+/* @} */
+
+#endif /* __MB_GE_CAIRO_H_ */