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Bug 993 - Underline colors are sometimes wrong
* clutter/pango/pangoclutter-render.c: Fixed so that instead of trying to set the color in prepare_run it uses draw_glyphs to draw groups of glyphs and requests the color for each part from Pango.
This commit is contained in:
Neil Roberts
parent
d88d2a6061
commit
114148bab5
@ -1,3 +1,12 @@
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2008-06-27 Neil Roberts <neil@o-hand.com>
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Bug 993 - Underline colors are sometimes wrong
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* clutter/pango/pangoclutter-render.c: Fixed so that instead
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of trying to set the color in prepare_run it uses draw_glyphs
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to draw groups of glyphs and requests the color for each part
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from Pango.
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2008-06-26 Emmanuele Bassi <ebassi@openedhand.com>
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* clutter/clutter-actor.c:
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@ -62,12 +62,14 @@ struct _PangoClutterRendererClass
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PangoRendererClass class_instance;
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};
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#define CLUTTER_PANGO_UNIT_TO_FIXED(x) ((x) << (CFX_Q - 10))
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static void pango_clutter_renderer_finalize (GObject *object);
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static void pango_clutter_renderer_draw_glyph (PangoRenderer *renderer,
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PangoFont *font,
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PangoGlyph glyph,
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double x,
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double y);
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static void pango_clutter_renderer_draw_glyphs (PangoRenderer *renderer,
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PangoFont *font,
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PangoGlyphString *glyphs,
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int x,
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int y);
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static void pango_clutter_renderer_draw_rectangle (PangoRenderer *renderer,
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PangoRenderPart part,
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int x,
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@ -82,8 +84,6 @@ static void pango_clutter_renderer_draw_trapezoid (PangoRenderer *renderer,
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double y2,
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double x12,
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double x22);
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static void pango_clutter_renderer_prepare_run (PangoRenderer *renderer,
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PangoLayoutRun *run);
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static GObjectClass *parent_class = NULL;
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@ -108,10 +108,9 @@ pango_clutter_renderer_class_init (PangoClutterRendererClass *klass)
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object_class->finalize = pango_clutter_renderer_finalize;
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renderer_class->draw_glyph = pango_clutter_renderer_draw_glyph;
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renderer_class->draw_glyphs = pango_clutter_renderer_draw_glyphs;
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renderer_class->draw_rectangle = pango_clutter_renderer_draw_rectangle;
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renderer_class->draw_trapezoid = pango_clutter_renderer_draw_trapezoid;
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renderer_class->prepare_run = pango_clutter_renderer_prepare_run;
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}
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static void
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@ -315,6 +314,27 @@ pango_clutter_ensure_glyph_cache_for_layout (PangoLayout *layout)
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pango_layout_iter_free (iter);
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}
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static void
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pango_clutter_renderer_set_color_for_part (PangoRenderer *renderer,
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PangoRenderPart part)
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{
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PangoColor *pango_color = pango_renderer_get_color (renderer, part);
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PangoClutterRenderer *priv = PANGO_CLUTTER_RENDERER (renderer);
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ClutterColor clutter_color;
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if (pango_color)
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{
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clutter_color.red = pango_color->red >> 8;
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clutter_color.green = pango_color->green >> 8;
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clutter_color.blue = pango_color->blue >> 8;
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clutter_color.alpha = priv->color.alpha;
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}
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else
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clutter_color = priv->color;
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cogl_color (&clutter_color);
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}
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static void
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pango_clutter_renderer_draw_box (int x, int y,
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int width, int height)
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@ -326,6 +346,30 @@ pango_clutter_renderer_draw_box (int x, int y,
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cogl_path_stroke ();
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}
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static void
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pango_clutter_renderer_get_device_units (PangoRenderer *renderer,
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int xin,
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int yin,
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ClutterFixed *xout,
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ClutterFixed *yout)
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{
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const PangoMatrix *matrix;
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if ((matrix = pango_renderer_get_matrix (renderer)))
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{
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/* Convert user-space coords to device coords */
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*xout = CLUTTER_FLOAT_TO_FIXED ((xin * matrix->xx + yin * matrix->xy)
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/ PANGO_SCALE + matrix->x0);
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*yout = CLUTTER_FLOAT_TO_FIXED ((yin * matrix->yy + xin * matrix->yx)
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/ PANGO_SCALE + matrix->y0);
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}
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else
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{
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*xout = CLUTTER_PANGO_UNIT_TO_FIXED (xin);
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*yout = CLUTTER_PANGO_UNIT_TO_FIXED (yin);
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}
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}
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static void
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pango_clutter_renderer_draw_rectangle (PangoRenderer *renderer,
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PangoRenderPart part,
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@ -334,28 +378,16 @@ pango_clutter_renderer_draw_rectangle (PangoRenderer *renderer,
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int width,
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int height)
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{
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float x1, x2, y1, y2;
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const PangoMatrix *matrix;
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ClutterFixed x1, x2, y1, y2;
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if ((matrix = pango_renderer_get_matrix (renderer)))
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{
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/* Convert user-space coords to device coords */
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x1 = (x * matrix->xx + y * matrix->xy) / PANGO_SCALE + matrix->x0;
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x2 = ((x + width) * matrix->xx + (y + height) * matrix->xy)
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/ PANGO_SCALE + matrix->x0;
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y1 = (y * matrix->yy + x * matrix->yx) / PANGO_SCALE + matrix->y0;
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y2 = ((y + height) * matrix->yy + (x + width) * matrix->yx)
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/ PANGO_SCALE + matrix->y0;
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}
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else
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{
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x1 = x / PANGO_SCALE;
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x2 = (x + width) / PANGO_SCALE;
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y1 = y / PANGO_SCALE;
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y2 = (y + height) / PANGO_SCALE;
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}
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pango_clutter_renderer_set_color_for_part (renderer, part);
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cogl_rectangle (x1, y1, x2 - x1, y2 - y1);
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pango_clutter_renderer_get_device_units (renderer, x, y,
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&x1, &y1);
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pango_clutter_renderer_get_device_units (renderer, x + width, y + height,
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&x2, &y2);
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cogl_rectanglex (x1, y1, x2 - x1, y2 - y1);
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}
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static void
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@ -379,110 +411,84 @@ pango_clutter_renderer_draw_trapezoid (PangoRenderer *renderer,
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points[6] = CLUTTER_FLOAT_TO_FIXED (x21);
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points[7] = points[1];
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pango_clutter_renderer_set_color_for_part (renderer, part);
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cogl_path_polygon (points, 4);
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cogl_path_fill ();
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}
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static void
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pango_clutter_renderer_draw_glyph (PangoRenderer *renderer,
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PangoFont *font,
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PangoGlyph glyph,
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double xd,
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double yd)
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pango_clutter_renderer_draw_glyphs (PangoRenderer *renderer,
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PangoFont *font,
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PangoGlyphString *glyphs,
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int xi,
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int yi)
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{
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PangoClutterGlyphCacheValue *cache_value;
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ClutterFixed x = CLUTTER_FLOAT_TO_FIXED ((float) xd);
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ClutterFixed y = CLUTTER_FLOAT_TO_FIXED ((float) yd);
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int i;
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if ((glyph & PANGO_GLYPH_UNKNOWN_FLAG))
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pango_clutter_renderer_set_color_for_part (renderer,
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PANGO_RENDER_PART_FOREGROUND);
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for (i = 0; i < glyphs->num_glyphs; i++)
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{
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PangoFontMetrics *metrics;
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PangoGlyphInfo *gi = glyphs->glyphs + i;
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ClutterFixed x, y;
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if (font == NULL
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|| (metrics = pango_font_get_metrics (font, NULL)) == NULL)
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pango_clutter_renderer_draw_box (CLUTTER_FIXED_TO_INT (x),
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CLUTTER_FIXED_TO_INT (y),
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PANGO_UNKNOWN_GLYPH_WIDTH,
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PANGO_UNKNOWN_GLYPH_HEIGHT);
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pango_clutter_renderer_get_device_units (renderer,
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xi + gi->geometry.x_offset,
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yi + gi->geometry.y_offset,
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&x, &y);
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if ((gi->glyph & PANGO_GLYPH_UNKNOWN_FLAG))
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{
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PangoFontMetrics *metrics;
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if (font == NULL
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|| (metrics = pango_font_get_metrics (font, NULL)) == NULL)
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pango_clutter_renderer_draw_box (CLUTTER_FIXED_TO_INT (x),
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CLUTTER_FIXED_TO_INT (y),
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PANGO_UNKNOWN_GLYPH_WIDTH,
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PANGO_UNKNOWN_GLYPH_HEIGHT);
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else
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{
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pango_clutter_renderer_draw_box (CLUTTER_FIXED_TO_INT (x),
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CLUTTER_FIXED_TO_INT (y),
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metrics->approximate_char_width
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/ PANGO_SCALE,
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metrics->ascent / PANGO_SCALE);
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pango_font_metrics_unref (metrics);
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}
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}
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else
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{
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pango_clutter_renderer_draw_box (CLUTTER_FIXED_TO_INT (x),
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CLUTTER_FIXED_TO_INT (y),
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metrics->approximate_char_width
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/ PANGO_SCALE,
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metrics->ascent / PANGO_SCALE);
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/* Get the texture containing the glyph. This will create
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the cache entry if there isn't already one */
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cache_value
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= pango_clutter_renderer_get_cached_glyph (renderer, font,
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gi->glyph);
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pango_font_metrics_unref (metrics);
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if (cache_value == NULL)
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pango_clutter_renderer_draw_box (CLUTTER_FIXED_TO_INT (x),
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CLUTTER_FIXED_TO_INT (y),
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PANGO_UNKNOWN_GLYPH_WIDTH,
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PANGO_UNKNOWN_GLYPH_HEIGHT);
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else
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{
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x += CLUTTER_INT_TO_FIXED (cache_value->draw_x);
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y += CLUTTER_INT_TO_FIXED (cache_value->draw_y);
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/* Render the glyph from the texture */
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cogl_texture_rectangle (cache_value->texture, x, y,
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x + CLUTTER_INT_TO_FIXED (cache_value
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->draw_width),
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y + CLUTTER_INT_TO_FIXED (cache_value
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->draw_height),
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cache_value->tx1, cache_value->ty1,
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cache_value->tx2, cache_value->ty2);
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}
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}
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return;
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xi += gi->geometry.width;
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}
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/* Get the texture containing the glyph. This will create the cache
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entry if there isn't already one */
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cache_value = pango_clutter_renderer_get_cached_glyph (renderer, font, glyph);
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if (cache_value == NULL)
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{
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pango_clutter_renderer_draw_box (CLUTTER_FIXED_TO_INT (x),
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CLUTTER_FIXED_TO_INT (y),
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PANGO_UNKNOWN_GLYPH_WIDTH,
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PANGO_UNKNOWN_GLYPH_HEIGHT);
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return;
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}
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x += CLUTTER_INT_TO_FIXED (cache_value->draw_x);
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y += CLUTTER_INT_TO_FIXED (cache_value->draw_y);
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/* Render the glyph from the texture */
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cogl_texture_rectangle (cache_value->texture, x, y,
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x + CLUTTER_INT_TO_FIXED (cache_value->draw_width),
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y + CLUTTER_INT_TO_FIXED (cache_value->draw_height),
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cache_value->tx1, cache_value->ty1,
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cache_value->tx2, cache_value->ty2);
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}
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static void
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pango_clutter_renderer_prepare_run (PangoRenderer *renderer,
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PangoLayoutRun *run)
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{
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GSList *node;
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PangoColor *fg = NULL;
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ClutterColor col;
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PangoClutterRenderer *priv = PANGO_CLUTTER_RENDERER (renderer);
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for (node = run->item->analysis.extra_attrs; node; node = node->next)
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{
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PangoAttribute *attr = node->data;
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switch (attr->klass->type)
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{
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case PANGO_ATTR_FOREGROUND:
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fg = &((PangoAttrColor *) attr)->color;
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default:
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break;
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}
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}
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if (fg)
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{
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col.red = (fg->red * 255) / 65535;
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col.green = (fg->green * 255) / 65535;
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col.blue = (fg->blue * 255) / 65535;
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}
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else
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{
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col.red = priv->color.red;
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col.green = priv->color.green;
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col.blue = priv->color.blue;
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}
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col.alpha = priv->color.alpha;
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cogl_color (&col);
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/* Chain up */
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(* PANGO_RENDERER_CLASS (parent_class)->prepare_run) (renderer, run);
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}
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