* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
+/**
+ * SECTION:cogl-pango
+ * @short_description: COGL-based text rendering using Pango
+ *
+ * FIXME
+ *
+ */
+
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
static GQuark cogl_pango_font_map_get_renderer_key (void) G_GNUC_CONST;
+/**
+ * cogl_pango_font_map_new:
+ *
+ * Creates a new font map.
+ *
+ * Return value: the newly created #PangoFontMap
+ *
+ * Since: 1.0
+ */
PangoFontMap *
cogl_pango_font_map_new (void)
{
return pango_cairo_font_map_new ();
}
+/**
+ * cogl_pango_font_map_create_context:
+ * @fm: a #CoglPangoFontMap
+ *
+ * Creates a new #PangoContext from the passed font map.
+ *
+ * Return value: the newly created #PangoContext
+ *
+ * Since: 1.0
+ */
PangoContext *
cogl_pango_font_map_create_context (CoglPangoFontMap *fm)
{
return pango_cairo_font_map_create_context (PANGO_CAIRO_FONT_MAP (fm));
}
+/**
+ * cogl_pango_font_map_get_renderer:
+ * @fm: a #CoglPangoFontMap
+ *
+ * Retrieves the #CoglPangoRenderer for the passed font map.
+ *
+ * Return value: a #PangoRenderer
+ *
+ * Since: 1.0
+ */
PangoRenderer *
cogl_pango_font_map_get_renderer (CoglPangoFontMap *fm)
{
return renderer;
}
+/**
+ * cogl_pango_font_map_set_resolution:
+ * @font_map: a #CoglPangoFontMap
+ * @dpi: DPI to set
+ *
+ * Sets the resolution to be used by @font_map at @dpi.
+ *
+ * Since: 1.0
+ */
void
cogl_pango_font_map_set_resolution (CoglPangoFontMap *font_map,
double dpi)
pango_cairo_font_map_set_resolution (PANGO_CAIRO_FONT_MAP (font_map), dpi);
}
+/**
+ * cogl_pango_font_map_clear_glyph_cache:
+ * @fm: a #CoglPangoFontMap
+ *
+ * Clears the glyph cache for @fm.
+ *
+ * Since: 1.0
+ */
void
cogl_pango_font_map_clear_glyph_cache (CoglPangoFontMap *fm)
{
_cogl_pango_renderer_clear_glyph_cache (COGL_PANGO_RENDERER (renderer));
}
+/**
+ * cogl_pango_font_map_set_use_mipmapping:
+ * @fm: a #CoglPangoFontMap
+ * @value: %TRUE to enable the use of mipmapping
+ *
+ * Sets whether the renderer for the passed font map should use
+ * mipmapping when rendering a #PangoLayout.
+ *
+ * Since: 1.0
+ */
void
cogl_pango_font_map_set_use_mipmapping (CoglPangoFontMap *fm,
gboolean value)
_cogl_pango_renderer_set_use_mipmapping (renderer, value);
}
+/**
+ * cogl_pango_font_map_get_use_mipmapping:
+ * @fm: a #CoglPangoFontMap
+ *
+ * Retrieves whether the #CoglPangoRenderer used by @fm will
+ * use mipmapping when rendering the glyphs.
+ *
+ * Return value: %TRUE if mipmapping is used, %FALSE otherwise.
+ *
+ * Since: 1.0
+ */
gboolean
cogl_pango_font_map_get_use_mipmapping (CoglPangoFontMap *fm)
{
static void cogl_pango_renderer_finalize (GObject *object);
static void cogl_pango_renderer_draw_glyphs (PangoRenderer *renderer,
- PangoFont *font,
- PangoGlyphString *glyphs,
- int x,
- int y);
+ PangoFont *font,
+ PangoGlyphString *glyphs,
+ int x,
+ int y);
static void cogl_pango_renderer_draw_rectangle (PangoRenderer *renderer,
- PangoRenderPart part,
- int x,
- int y,
- int width,
- int height);
+ PangoRenderPart part,
+ int x,
+ int y,
+ int width,
+ int height);
static void cogl_pango_renderer_draw_trapezoid (PangoRenderer *renderer,
- PangoRenderPart part,
- double y1,
- double x11,
- double x21,
- double y2,
- double x12,
- double x22);
+ PangoRenderPart part,
+ double y1,
+ double x11,
+ double x21,
+ double y2,
+ double x12,
+ double x22);
-static GObjectClass *parent_class = NULL;
-
-G_DEFINE_TYPE (CoglPangoRenderer, cogl_pango_renderer,
- PANGO_TYPE_RENDERER);
+G_DEFINE_TYPE (CoglPangoRenderer, cogl_pango_renderer, PANGO_TYPE_RENDERER);
static void
cogl_pango_renderer_init (CoglPangoRenderer *priv)
GObjectClass *object_class = G_OBJECT_CLASS (klass);
PangoRendererClass *renderer_class = PANGO_RENDERER_CLASS (klass);
- parent_class = g_type_class_peek_parent (klass);
-
object_class->finalize = cogl_pango_renderer_finalize;
renderer_class->draw_glyphs = cogl_pango_renderer_draw_glyphs;
cogl_pango_glyph_cache_free (priv->mipmapped_glyph_cache);
cogl_pango_glyph_cache_free (priv->glyph_cache);
- G_OBJECT_CLASS (parent_class)->finalize (object);
+ G_OBJECT_CLASS (cogl_pango_renderer_parent_class)->finalize (object);
}
+static CoglPangoRenderer *
+cogl_pango_get_renderer_from_context (PangoContext *context)
+{
+ PangoFontMap *font_map;
+ PangoRenderer *renderer;
+ CoglPangoFontMap *font_map_priv;
+
+ font_map = pango_context_get_font_map (context);
+ g_return_val_if_fail (COGL_PANGO_IS_FONT_MAP (font_map), NULL);
+
+ font_map_priv = COGL_PANGO_FONT_MAP (font_map);
+ renderer = cogl_pango_font_map_get_renderer (font_map_priv);
+ g_return_val_if_fail (COGL_PANGO_IS_RENDERER (renderer), NULL);
+
+ return COGL_PANGO_RENDERER (renderer);
+}
+
+/**
+ * cogl_pango_render_layout_subpixel:
+ * @layout: a #PangoLayout
+ * @x: FIXME
+ * @y: FIXME
+ * @color: color to use when rendering the layout
+ * @flags: flags to pass to the renderer
+ *
+ * FIXME
+ *
+ * Since: 1.0
+ */
void
cogl_pango_render_layout_subpixel (PangoLayout *layout,
- int x,
- int y,
- const CoglColor *color,
- int flags)
+ int x,
+ int y,
+ const CoglColor *color,
+ int flags)
{
- PangoContext *context;
- PangoFontMap *font_map;
- PangoRenderer *renderer;
+ PangoContext *context;
CoglPangoRenderer *priv;
context = pango_layout_get_context (layout);
- font_map = pango_context_get_font_map (context);
- g_return_if_fail (COGL_PANGO_IS_FONT_MAP (font_map));
- renderer = cogl_pango_font_map_get_renderer
- (COGL_PANGO_FONT_MAP (font_map));
- priv = COGL_PANGO_RENDERER (renderer);
+ priv = cogl_pango_get_renderer_from_context (context);
+ if (G_UNLIKELY (!priv))
+ return;
priv->color = *color;
- pango_renderer_draw_layout (renderer, layout, x, y);
+ pango_renderer_draw_layout (PANGO_RENDERER (priv), layout, x, y);
}
+/**
+ * cogl_pango_render_layout:
+ * @layout: a #PangoLayout
+ * @x: X coordinate to render the layout at
+ * @y: Y coordinate to render the layout at
+ * @color: color to use when rendering the layout
+ * @flags: flags to pass to the renderer
+ *
+ * Renders @layout.
+ *
+ * Since: 1.0
+ */
void
cogl_pango_render_layout (PangoLayout *layout,
- int x,
- int y,
- const CoglColor *color,
- int flags)
+ int x,
+ int y,
+ const CoglColor *color,
+ int flags)
{
cogl_pango_render_layout_subpixel (layout,
- x * PANGO_SCALE,
- y * PANGO_SCALE,
- color,
- flags);
+ x * PANGO_SCALE,
+ y * PANGO_SCALE,
+ color,
+ flags);
}
+/**
+ * cogl_pango_render_layout_line:
+ * @line: a #PangoLayoutLine
+ * @x: X coordinate to render the line at
+ * @y: Y coordinate to render the line at
+ * @color: color to use when rendering the line
+ *
+ * Renders @line at the given coordinates using the given color.
+ *
+ * Since: 1.0
+ */
void
cogl_pango_render_layout_line (PangoLayoutLine *line,
- int x,
- int y,
- const CoglColor *color)
+ int x,
+ int y,
+ const CoglColor *color)
{
- PangoContext *context;
- PangoFontMap *font_map;
- PangoRenderer *renderer;
+ PangoContext *context;
CoglPangoRenderer *priv;
context = pango_layout_get_context (line->layout);
- font_map = pango_context_get_font_map (context);
- g_return_if_fail (COGL_PANGO_IS_FONT_MAP (font_map));
- renderer = cogl_pango_font_map_get_renderer
- (COGL_PANGO_FONT_MAP (font_map));
- priv = COGL_PANGO_RENDERER (renderer);
+ priv = cogl_pango_get_renderer_from_context (context);
+ if (G_UNLIKELY (!priv))
+ return;
priv->color = *color;
- pango_renderer_draw_layout_line (renderer, line, x, y);
+ pango_renderer_draw_layout_line (PANGO_RENDERER (priv), line, x, y);
}
void
static CoglPangoGlyphCacheValue *
cogl_pango_renderer_get_cached_glyph (PangoRenderer *renderer,
- PangoFont *font,
- PangoGlyph glyph)
+ PangoFont *font,
+ PangoGlyph glyph)
{
CoglPangoRenderer *priv = COGL_PANGO_RENDERER (renderer);
CoglPangoGlyphCacheValue *value;
CoglPangoGlyphCache *glyph_cache;
- glyph_cache = priv->use_mipmapping
- ? priv->mipmapped_glyph_cache : priv->glyph_cache;
+ glyph_cache = priv->use_mipmapping ? priv->mipmapped_glyph_cache
+ : priv->glyph_cache;
- if ((value = cogl_pango_glyph_cache_lookup (glyph_cache,
- font,
- glyph)) == NULL)
+ value = cogl_pango_glyph_cache_lookup (glyph_cache, font, glyph);
+ if (value == NULL)
{
cairo_surface_t *surface;
cairo_t *cr;
cairo_surface_flush (surface);
/* Copy the glyph to the cache */
- value = cogl_pango_glyph_cache_set
- (glyph_cache, font, glyph,
- cairo_image_surface_get_data (surface),
- cairo_image_surface_get_width (surface),
- cairo_image_surface_get_height (surface),
- cairo_image_surface_get_stride (surface),
- ink_rect.x, ink_rect.y);
+ value =
+ cogl_pango_glyph_cache_set (glyph_cache, font, glyph,
+ cairo_image_surface_get_data (surface),
+ cairo_image_surface_get_width (surface),
+ cairo_image_surface_get_height (surface),
+ cairo_image_surface_get_stride (surface),
+ ink_rect.x, ink_rect.y);
cairo_surface_destroy (surface);
cogl_pango_ensure_glyph_cache_for_layout (PangoLayout *layout)
{
PangoContext *context;
- PangoFontMap *fontmap;
PangoRenderer *renderer;
PangoLayoutIter *iter;
g_return_if_fail (PANGO_IS_LAYOUT (layout));
- context = pango_layout_get_context (layout);
- fontmap = pango_context_get_font_map (context);
- g_return_if_fail (COGL_PANGO_IS_FONT_MAP (fontmap));
- renderer = cogl_pango_font_map_get_renderer
- (COGL_PANGO_FONT_MAP (fontmap));
-
if ((iter = pango_layout_get_iter (layout)) == NULL)
return;
+ context = pango_layout_get_context (layout);
+ renderer =
+ PANGO_RENDERER (cogl_pango_get_renderer_from_context (context));
+
do
{
PangoLayoutLine *line;
PangoGlyphInfo *gi = &glyphs->glyphs[i];
cogl_pango_renderer_get_cached_glyph (renderer,
- run->item->analysis.font,
- gi->glyph);
+ run->item->analysis.font,
+ gi->glyph);
}
}
}
}
static void
-cogl_pango_renderer_draw_rectangle (PangoRenderer *renderer,
- PangoRenderPart part,
- int x,
- int y,
- int width,
- int height)
+cogl_pango_renderer_draw_rectangle (PangoRenderer *renderer,
+ PangoRenderPart part,
+ int x,
+ int y,
+ int width,
+ int height)
{
CoglFixed x1, x2, y1, y2;
cogl_pango_renderer_set_color_for_part (renderer, part);
- cogl_pango_renderer_get_device_units (renderer, x, y,
- &x1, &y1);
- cogl_pango_renderer_get_device_units (renderer, x + width, y + height,
- &x2, &y2);
+ cogl_pango_renderer_get_device_units (renderer,
+ x, y,
+ &x1, &y1);
+ cogl_pango_renderer_get_device_units (renderer,
+ x + width, y + height,
+ &x2, &y2);
cogl_rectanglex (x1, y1, x2 - x1, y2 - y1);
}
static void
-cogl_pango_renderer_draw_trapezoid (PangoRenderer *renderer,
- PangoRenderPart part,
- double y1,
- double x11,
- double x21,
- double y2,
- double x12,
- double x22)
+cogl_pango_renderer_draw_trapezoid (PangoRenderer *renderer,
+ PangoRenderPart part,
+ double y1,
+ double x11,
+ double x21,
+ double y2,
+ double x12,
+ double x22)
{
CoglFixed points[8];
static void
cogl_pango_renderer_draw_glyphs (PangoRenderer *renderer,
- PangoFont *font,
- PangoGlyphString *glyphs,
- int xi,
- int yi)
+ PangoFont *font,
+ PangoGlyphString *glyphs,
+ int xi,
+ int yi)
{
CoglPangoGlyphCacheValue *cache_value;
int i;
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