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textoverlay: added 'shadow' option to control whether text gets a shadow
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parent
2ba4a56d74
commit
c8a3f63909
2 changed files with 28 additions and 5 deletions
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@ -95,6 +95,7 @@ GST_DEBUG_CATEGORY (pango_debug);
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#define DEFAULT_PROP_TEXT ""
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#define DEFAULT_PROP_SHADING FALSE
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#define DEFAULT_PROP_SHADOW TRUE
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#define DEFAULT_PROP_VALIGNMENT GST_TEXT_OVERLAY_VALIGN_BASELINE
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#define DEFAULT_PROP_HALIGNMENT GST_TEXT_OVERLAY_HALIGN_CENTER
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#define DEFAULT_PROP_VALIGN "baseline"
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@ -185,6 +186,7 @@ enum
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PROP_AUTO_ADJUST_SIZE,
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PROP_VERTICAL_RENDER,
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PROP_COLOR,
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PROP_SHADOW,
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PROP_LAST
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};
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@ -418,6 +420,17 @@ gst_text_overlay_class_init (GstTextOverlayClass * klass)
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g_param_spec_boolean ("shaded-background", "shaded background",
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"Whether to shade the background under the text area",
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DEFAULT_PROP_SHADING, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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/**
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* GstTextOverlay:shadow
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*
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* Whether to display a shadow of each letter under the text.
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*
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* Since: 0.10.35
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**/
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g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_SHADOW,
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g_param_spec_boolean ("shadow", "create shadow of text",
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"Whether to create a shadow of the letters under the text",
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DEFAULT_PROP_SHADOW, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_VALIGNMENT,
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g_param_spec_enum ("valignment", "vertical alignment",
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"Vertical alignment of the text", GST_TYPE_TEXT_OVERLAY_VALIGN,
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@ -655,6 +668,7 @@ gst_text_overlay_init (GstTextOverlay * overlay, GstTextOverlayClass * klass)
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overlay->wrap_mode = DEFAULT_PROP_WRAP_MODE;
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overlay->want_shading = DEFAULT_PROP_SHADING;
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overlay->want_shadow = DEFAULT_PROP_SHADOW;
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overlay->shading_value = DEFAULT_SHADING_VALUE;
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overlay->silent = DEFAULT_PROP_SILENT;
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overlay->wait_text = DEFAULT_PROP_WAIT_TEXT;
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@ -798,6 +812,9 @@ gst_text_overlay_set_property (GObject * object, guint prop_id,
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case PROP_SHADING:
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overlay->want_shading = g_value_get_boolean (value);
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break;
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case PROP_SHADOW:
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overlay->want_shadow = g_value_get_boolean (value);
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break;
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case PROP_XPAD:
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overlay->xpad = g_value_get_int (value);
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break;
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@ -926,6 +943,9 @@ gst_text_overlay_get_property (GObject * object, guint prop_id,
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case PROP_SHADING:
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g_value_set_boolean (value, overlay->want_shading);
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break;
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case PROP_SHADOW:
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g_value_set_boolean (value, overlay->want_shadow);
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break;
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case PROP_XPAD:
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g_value_set_int (value, overlay->xpad);
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break;
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@ -1374,11 +1394,13 @@ gst_text_overlay_render_pangocairo (GstTextOverlay * overlay,
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*/
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/* draw shadow text */
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cairo_save (cr);
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cairo_translate (cr, overlay->shadow_offset, overlay->shadow_offset);
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cairo_set_source_rgba (cr, 0.0, 0.0, 0.0, 0.5);
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pango_cairo_show_layout (cr, overlay->layout);
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cairo_restore (cr);
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if (overlay->want_shadow) {
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cairo_save (cr);
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cairo_translate (cr, overlay->shadow_offset, overlay->shadow_offset);
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cairo_set_source_rgba (cr, 0.0, 0.0, 0.0, 0.5);
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pango_cairo_show_layout (cr, overlay->layout);
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cairo_restore (cr);
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}
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/* draw outline text */
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cairo_save (cr);
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@ -140,6 +140,7 @@ struct _GstTextOverlay {
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PangoLayout *layout;
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gdouble shadow_offset;
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gboolean want_shadow;
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gdouble outline_offset;
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guchar *text_image;
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gint image_width;
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