Move shadow option (for text) from editor/interface to blenfont.

Two new function:
 BLF_shadow: set the level (for blur) and the shadow color.
 BLF_shadow_offset: set the x and y offset for shadow.
		 (this is the current position plus offset)

By default shadow is not enable in the font, so before draw the
text you need call BLF_enable(BLF_SHADOW), also remember disable
the option in the end.

1 files changed, 31 insertions, 0 deletions

diff --git a/source/blender/blenfont/intern/blf_glyph.c b/source/blender/blenfont/intern/blf_glyph.c
index 33a435cc5be..5e0868ea680 100644
--- a/source/blender/blenfont/intern/blf_glyph.c
+++ b/source/blender/blenfont/intern/blf_glyph.c
@@ -496,8 +496,18 @@ int blf_glyph_texture_render(FontBLF *font, GlyphBLF *g, float x, float y)
 	GLint cur_tex;
 	float dx, dx1;
 	float y1, y2;
+	float xo, yo;
+	float color[4];
 
 	gt= g->tex_data;
+
+	if (font->flags & BLF_SHADOW) {
+		xo= x;
+		yo= y;
+		x += font->shadow_x;
+		y += font->shadow_y;
+	}
+
 	dx= floor(x + gt->pos_x);
 	dx1= dx + gt->width;
 	y1= y + gt->pos_y;
@@ -518,6 +528,27 @@ int blf_glyph_texture_render(FontBLF *font, GlyphBLF *g, float x, float y)
 	if (cur_tex != gt->tex)
 		glBindTexture(GL_TEXTURE_2D, gt->tex);
 
+	if (font->flags & BLF_SHADOW) {
+		glGetFloatv(GL_CURRENT_COLOR, color);
+		glColor4fv(font->shadow_col);
+
+		if (font->shadow == 3)
+			blf_texture3_draw(gt->uv, dx, y1, dx1, y2);
+		else if (font->shadow == 5)
+			blf_texture5_draw(gt->uv, dx, y1, dx1, y2);
+		else
+			blf_texture_draw(gt->uv, dx, y1, dx1, y2);
+
+		glColor4fv(color);
+		x= xo;
+		y= yo;
+
+		dx= floor(x + gt->pos_x);
+		dx1= dx + gt->width;
+		y1= y + gt->pos_y;
+		y2= y + gt->pos_y - gt->height;
+	}
+
 	if (font->blur==3)
 		blf_texture3_draw(gt->uv, dx, y1, dx1, y2);
 	else if (font->blur==5)