Mercurial > MadButterfly

diff src/paint.c @ 881:a17c4e231e54 abs_n_rel_center

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Transform positions of radient paints. cx, cy of radial and x1, y1, x2, y2 of linear gradient paints must be transformed with aggregated matrix of painted shapes. Pattern to user space transformation maybe used to get more precise color.
author Thinker K.F. Li <thinker@codemud.net>
date Sat, 25 Sep 2010 20:12:45 +0800
parents f41ac71266bc
children 7b4e80ab671a
line wrap: on
line diff
--- a/src/paint.c	Sat Sep 25 18:46:37 2010 +0800
+++ b/src/paint.c	Sat Sep 25 20:12:45 2010 +0800
@@ -17,7 +17,7 @@
 int _paint_color_size = sizeof(paint_color_t);
 
 
-static void paint_color_prepare(paint_t *paint, mbe_t *cr) {
+static void paint_color_prepare(paint_t *paint, mbe_t *cr, shape_t *sh) {
     paint_color_t *color = (paint_color_t *)paint;
 
     mbe_set_source_rgba(cr, color->r, color->g, color->b, color->a);
@@ -84,17 +84,27 @@
 
 int _paint_linear_size = sizeof(paint_linear_t);
 
-static void paint_linear_prepare(paint_t *paint, mbe_t *cr) {
+static void paint_linear_prepare(paint_t *paint, mbe_t *cr, shape_t *sh) {
     paint_linear_t *linear = (paint_linear_t *)paint;
     mbe_pattern_t *ptn;
+    co_aix x1, y1;
+    co_aix x2, y2;
+    co_aix *mtx;
 
     ptn = linear->ptn;
     if(linear->flags & LIF_DIRTY) {
+	mtx = sh_get_aggr_matrix(sh);
+	x1 = linear->x1;
+	y1 = linear->y1;
+	matrix_trans_pos(mtx, &x1, &y1);
+	x2 = linear->x2;
+	y2 = linear->y2;
+	matrix_trans_pos(mtx, &x2, &y2);
+
 	if(ptn)
 	    mbe_pattern_destroy(ptn);
 	linear->flags &= ~LIF_DIRTY;
-	ptn = mbe_pattern_create_linear(linear->x1, linear->y1,
-					linear->x2, linear->y2,
+	ptn = mbe_pattern_create_linear(x1, y1, x2, y2,
 					linear->stops, linear->n_stops);
 	ASSERT(ptn != NULL);
 	linear->ptn = ptn;
@@ -174,13 +184,20 @@
 
 int _paint_radial_size = sizeof(paint_radial_t);
 
-static void paint_radial_prepare(paint_t *paint, mbe_t *cr) {
+static void paint_radial_prepare(paint_t *paint, mbe_t *cr, shape_t *sh) {
     paint_radial_t *radial = (paint_radial_t *)paint;
     mbe_pattern_t *ptn;
+    co_aix cx, cy;
+    co_aix *mtx;
 
     if(radial->flags & RDF_DIRTY) {
-	ptn = mbe_pattern_create_radial(radial->cx, radial->cy, 0,
-					  radial->cx, radial->cy,
+	mtx = sh_get_aggr_matrix(sh);
+	cx = radial->cx;
+	cy = radial->cy;
+	matrix_trans_pos(mtx, &cx, &cy);
+	
+	ptn = mbe_pattern_create_radial(cx, cy, 0,
+					cx, cy,
 					radial->r,
 					radial->stops,
 					radial->n_stops);
@@ -256,7 +273,7 @@
 int _paint_image_size = sizeof(paint_image_t);
 
 static
-void paint_image_prepare(paint_t *paint, mbe_t *cr) {
+void paint_image_prepare(paint_t *paint, mbe_t *cr, shape_t *sh) {
     paint_image_t *paint_img = (paint_image_t *)paint;
     mb_img_data_t *img_data;