Working transparent text ;-)

CHiPs44 · Feb 16, 2023 · 76d3456 · 76d3456
1 parent 4a7f990
commit 76d3456
Showing 1 changed file with 31 additions and 12 deletions.
diff --git a/src/hagl_char.c b/src/hagl_char.c
@@ -82,9 +82,10 @@ hagl_put_char_styled(void const *_surface, wchar_t code, int16_t x0, int16_t y0,
     uint8_t set, status;
     hagl_bitmap_t bitmap;
     fontx_glyph_t glyph;
-    bool reverse;
-    hagl_color_t background_color;
-    hagl_color_t foreground_color;
+    bool         reverse           = style->mode & HAGL_CHAR_MODE_REVERSE ? true : false;
+    hagl_color_t foreground_color  = reverse ? style->background_color : style->foreground_color;
+    hagl_color_t background_color  = reverse ? style->foreground_color : style->background_color;
+    hagl_color_t transparent_color = foreground_color == 0 ? 1 : 0;
 
     status = fontx_glyph(&glyph, code, style->font);
     if (0 != status) {
@@ -97,7 +98,6 @@ hagl_put_char_styled(void const *_surface, wchar_t code, int16_t x0, int16_t y0,
     }
 
     hagl_bitmap_init(&bitmap,  glyph.width, glyph.height, surface->depth, (uint8_t *)buffer);
-
     hagl_color_t *ptr = (hagl_color_t *) bitmap.buffer;
 
     for (uint8_t y = 0; y < glyph.height; y++) {
@@ -107,6 +107,8 @@ hagl_put_char_styled(void const *_surface, wchar_t code, int16_t x0, int16_t y0,
             {
                 if (set) {
                     *ptr = foreground_color;
+                } else {
+                    *ptr = transparent_color;
                 }
             } else {
                 if (set) {
@@ -124,16 +126,33 @@ hagl_put_char_styled(void const *_surface, wchar_t code, int16_t x0, int16_t y0,
         style->scale_x_numerator <= 1 && style->scale_x_denominator <= 1 
         && style->scale_y_numerator <= 1 && style->scale_y_denominator <= 1
     ) {
-        hagl_blit(_surface, x0, y0, &bitmap);
+        if (style->mode & HAGL_CHAR_MODE_TRANSPARENT)
+        {
+            hagl_blit_transparent(_surface, x0, y0, &bitmap, transparent_color);
+        } else {
+            hagl_blit(_surface, x0, y0, &bitmap);
+        }
         return bitmap.width;
     } else {
-        hagl_blit_xywh(
-            _surface, 
-            x0, y0, 
-            bitmap.width  * style->scale_x_numerator / style->scale_x_denominator, 
-            bitmap.height * style->scale_y_numerator / style->scale_y_denominator, 
-            &bitmap
-        );
+        if (style->mode & HAGL_CHAR_MODE_TRANSPARENT)
+        {
+            hagl_blit_xywh_transparent(
+                _surface, 
+                x0, y0, 
+                bitmap.width  * style->scale_x_numerator / style->scale_x_denominator, 
+                bitmap.height * style->scale_y_numerator / style->scale_y_denominator, 
+                &bitmap,
+                transparent_color
+            );
+        } else {
+            hagl_blit_xywh(
+                _surface, 
+                x0, y0, 
+                bitmap.width  * style->scale_x_numerator / style->scale_x_denominator, 
+                bitmap.height * style->scale_y_numerator / style->scale_y_denominator, 
+                &bitmap
+            );
+        }
         return bitmap.width * style->scale_x_numerator / style->scale_x_denominator;
     }
 }