void
gimp_font_list_restore (GimpFontList *list)
{
PangoFontMap *fontmap;
PangoContext *context;
g_return_if_fail (GIMP_IS_FONT_LIST (list));
fontmap = pango_cairo_font_map_new_for_font_type (CAIRO_FONT_TYPE_FT);
if (! fontmap)
g_error ("You are using a Pango that has been built against a cairo "
"that lacks the Freetype font backend");
pango_cairo_font_map_set_resolution (PANGO_CAIRO_FONT_MAP (fontmap),
list->yresolution);
context = pango_font_map_create_context (fontmap);
g_object_unref (fontmap);
gimp_container_freeze (GIMP_CONTAINER (list));
gimp_font_list_load_names (list, PANGO_FONT_MAP (fontmap), context);
g_object_unref (context);
gimp_list_sort_by_name (GIMP_LIST (list));
gimp_container_thaw (GIMP_CONTAINER (list));
}
/**
* pango_cairo_font_map_create_context: (skip):
* @fontmap: a #PangoCairoFontMap
*
* Create a #PangoContext for the given fontmap.
*
* Return value: the newly created context; free with g_object_unref().
*
* Since: 1.10
*
* Deprecated: 1.22: Use pango_font_map_create_context() instead.
**/
PangoContext *
pango_cairo_font_map_create_context (PangoCairoFontMap *fontmap)
{
g_return_val_if_fail (PANGO_IS_CAIRO_FONT_MAP (fontmap), NULL);
return pango_font_map_create_context (PANGO_FONT_MAP (fontmap));
}
void gtk_glwidget_create_font(){
PangoFontDescription *font_desc;
PangoLayout *layout;
PangoRectangle log_rect;
int font_ascent_pango_units;
int font_descent_pango_units;
if ( _debug_font_created ) {
Error( "Programming error: gtk_glwidget_create_font() was already called; "
"you must call gtk_glwidget_destroy_font() before creating font again" );
}
_debug_font_created = 1;
font_map = pango_ft2_font_map_new();
pango_ft2_font_map_set_resolution( PANGO_FT2_FONT_MAP( font_map ), 72, 72 );
ft2_context = pango_font_map_create_context( PANGO_FONT_MAP( font_map ));
font_desc = pango_font_description_from_string( font_string );
pango_font_description_set_size( font_desc, font_height * PANGO_SCALE );
pango_context_set_font_description( ft2_context, font_desc );
pango_font_description_free( font_desc );
layout = pango_layout_new( ft2_context );
// I don't believe that's standard preprocessor syntax?
#if !PANGO_VERSION_CHECK( 1,22,0 )
PangoLayoutIter *iter;
iter = pango_layout_get_iter( layout );
font_ascent_pango_units = pango_layout_iter_get_baseline( iter );
pango_layout_iter_free( iter );
#else
font_ascent_pango_units = pango_layout_get_baseline( layout );
#endif
pango_layout_get_extents( layout, NULL, &log_rect );
g_object_unref( G_OBJECT( layout ) );
font_descent_pango_units = log_rect.height - font_ascent_pango_units;
font_ascent = PANGO_PIXELS_CEIL( font_ascent_pango_units );
font_descent = PANGO_PIXELS_CEIL( font_descent_pango_units );
y_offset_bitmap_render_pango_units = ( font_ascent * PANGO_SCALE ) - font_ascent_pango_units;
}
/**
* gnm_pango_context_get:
*
* Simple wrapper to handle windowless operation
* Returns: (transfer full):
**/
PangoContext *
gnm_pango_context_get (void)
{
if (!context) {
GdkScreen *screen = gdk_screen_get_default ();
if (screen != NULL) {
context = gdk_pango_context_get_for_screen (screen);
} else {
if (!fontmap)
fontmap = pango_cairo_font_map_new ();
pango_cairo_font_map_set_resolution (PANGO_CAIRO_FONT_MAP (fontmap), 96);
context = pango_font_map_create_context (PANGO_FONT_MAP (fontmap));
}
pango_context_set_language (context, gtk_get_default_language ());
pango_context_set_base_dir (context, PANGO_DIRECTION_LTR);
}
return g_object_ref (context);
}
static void
settings_update_fontmap (ClutterSettings *self,
guint stamp)
{
if (self->backend == NULL)
return;
#ifdef HAVE_PANGO_FT2
CLUTTER_NOTE (BACKEND, "Update fontmaps (stamp: %d)", stamp);
if (self->last_fontconfig_timestamp != stamp)
{
ClutterMainContext *context;
gboolean update_needed = FALSE;
context = _clutter_context_get_default ();
/* If there is no font map yet then we don't need to do anything
* because the config for fontconfig will be read when it is
* created */
if (context->font_map)
{
PangoFontMap *fontmap = PANGO_FONT_MAP (context->font_map);
if (PANGO_IS_FC_FONT_MAP (fontmap) &&
!FcConfigUptoDate (NULL))
{
pango_fc_font_map_cache_clear (PANGO_FC_FONT_MAP (fontmap));
if (FcInitReinitialize ())
update_needed = TRUE;
}
}
self->last_fontconfig_timestamp = stamp;
if (update_needed)
g_signal_emit_by_name (self->backend, "font-changed");
}
#endif /* HAVE_PANGO_FT2 */
}
int
main (int argc, char **argv)
{
CoglContext *ctx;
CoglOnscreen *onscreen;
CoglFramebuffer *fb;
GError *error = NULL;
Data data;
PangoRectangle hello_label_size;
float fovy, aspect, z_near, z_2d, z_far;
CoglDepthState depth_state;
CoglBool has_swap_notify;
ctx = cogl_context_new (NULL, &error);
if (!ctx) {
fprintf (stderr, "Failed to create context: %s\n", error->message);
return 1;
}
onscreen = cogl_onscreen_new (ctx, 640, 480);
fb = COGL_FRAMEBUFFER (onscreen);
data.fb = fb;
data.framebuffer_width = cogl_framebuffer_get_width (fb);
data.framebuffer_height = cogl_framebuffer_get_height (fb);
data.timer = g_timer_new ();
cogl_onscreen_show (onscreen);
cogl_framebuffer_set_viewport (fb,
0, 0,
data.framebuffer_width,
data.framebuffer_height);
fovy = 60; /* y-axis field of view */
aspect = (float)data.framebuffer_width/(float)data.framebuffer_height;
z_near = 0.1; /* distance to near clipping plane */
z_2d = 1000; /* position to 2d plane */
z_far = 2000; /* distance to far clipping plane */
cogl_framebuffer_perspective (fb, fovy, aspect, z_near, z_far);
/* Since the pango renderer emits geometry in pixel/device coordinates
* and the anti aliasing is implemented with the assumption that the
* geometry *really* does end up pixel aligned, we setup a modelview
* matrix so that for geometry in the plane z = 0 we exactly map x
* coordinates in the range [0,stage_width] and y coordinates in the
* range [0,stage_height] to the framebuffer extents with (0,0) being
* the top left.
*
* This is roughly what Clutter does for a ClutterStage, but this
* demonstrates how it is done manually using Cogl.
*/
cogl_matrix_init_identity (&data.view);
cogl_matrix_view_2d_in_perspective (&data.view, fovy, aspect, z_near, z_2d,
data.framebuffer_width,
data.framebuffer_height);
cogl_framebuffer_set_modelview_matrix (fb, &data.view);
/* Initialize some convenient constants */
cogl_matrix_init_identity (&identity);
cogl_color_set_from_4ub (&white, 0xff, 0xff, 0xff, 0xff);
/* rectangle indices allow the GPU to interpret a list of quads (the
* faces of our cube) as a list of triangles.
*
* Since this is a very common thing to do
* cogl_get_rectangle_indices() is a convenience function for
* accessing internal index buffers that can be shared.
*/
data.indices = cogl_get_rectangle_indices (ctx, 6 /* n_rectangles */);
data.prim = cogl_primitive_new_p3t2 (ctx, COGL_VERTICES_MODE_TRIANGLES,
G_N_ELEMENTS (vertices),
vertices);
/* Each face will have 6 indices so we have 6 * 6 indices in total... */
cogl_primitive_set_indices (data.prim,
data.indices,
6 * 6);
/* Load a jpeg crate texture from a file */
printf ("crate.jpg (CC by-nc-nd http://bit.ly/9kP45T) ShadowRunner27 http://bit.ly/m1YXLh\n");
data.texture = cogl_texture_new_from_file (COGL_EXAMPLES_DATA "crate.jpg",
COGL_TEXTURE_NO_SLICING,
COGL_PIXEL_FORMAT_ANY,
&error);
if (!data.texture)
g_error ("Failed to load texture: %s", error->message);
/* a CoglPipeline conceptually describes all the state for vertex
* processing, fragment processing and blending geometry. When
* drawing the geometry for the crate this pipeline says to sample a
* single texture during fragment processing... */
data.crate_pipeline = cogl_pipeline_new (ctx);
cogl_pipeline_set_layer_texture (data.crate_pipeline, 0, data.texture);
/* Since the box is made of multiple triangles that will overlap
* when drawn and we don't control the order they are drawn in, we
* enable depth testing to make sure that triangles that shouldn't
* be visible get culled by the GPU. */
cogl_depth_state_init (&depth_state);
cogl_depth_state_set_test_enabled (&depth_state, TRUE);
cogl_pipeline_set_depth_state (data.crate_pipeline, &depth_state, NULL);
/* Setup a Pango font map and context */
data.pango_font_map = COGL_PANGO_FONT_MAP (cogl_pango_font_map_new (ctx));
cogl_pango_font_map_set_use_mipmapping (data.pango_font_map, TRUE);
data.pango_context =
pango_font_map_create_context (PANGO_FONT_MAP (data.pango_font_map));
data.pango_font_desc = pango_font_description_new ();
pango_font_description_set_family (data.pango_font_desc, "Sans");
pango_font_description_set_size (data.pango_font_desc, 30 * PANGO_SCALE);
/* Setup the "Hello Cogl" text */
data.hello_label = pango_layout_new (data.pango_context);
pango_layout_set_font_description (data.hello_label, data.pango_font_desc);
pango_layout_set_text (data.hello_label, "Hello Cogl", -1);
pango_layout_get_extents (data.hello_label, NULL, &hello_label_size);
data.hello_label_width = PANGO_PIXELS (hello_label_size.width);
data.hello_label_height = PANGO_PIXELS (hello_label_size.height);
data.swap_ready = TRUE;
has_swap_notify =
cogl_has_feature (ctx, COGL_FEATURE_ID_SWAP_BUFFERS_EVENT);
if (has_swap_notify)
cogl_onscreen_add_swap_buffers_callback (COGL_ONSCREEN (fb),
swap_notify_cb,
&data);
while (1)
{
CoglPollFD *poll_fds;
int n_poll_fds;
int64_t timeout;
if (data.swap_ready)
{
paint (&data);
cogl_onscreen_swap_buffers (COGL_ONSCREEN (fb));
}
cogl_poll_get_info (ctx, &poll_fds, &n_poll_fds, &timeout);
if (!has_swap_notify)
{
/* If the winsys doesn't support swap event notification
then we'll just redraw constantly */
data.swap_ready = TRUE;
timeout = 0;
}
g_poll ((GPollFD *) poll_fds, n_poll_fds,
timeout == -1 ? -1 : timeout / 1000);
cogl_poll_dispatch (ctx, poll_fds, n_poll_fds);
}
return 0;
}
static PangoContext *
pangoft2_view_get_context (gpointer instance)
{
return pango_font_map_create_context (PANGO_FONT_MAP (instance));
}