static void gimp_component_editor_renderer_update (GimpViewRenderer *renderer, GimpComponentEditor *editor) { GimpChannelType channel = GIMP_VIEW_RENDERER_IMAGE (renderer)->channel; GtkTreeIter iter; if (gimp_component_editor_get_iter (editor, channel, &iter)) { GtkTreePath *path; path = gtk_tree_model_get_path (editor->model, &iter); gtk_tree_model_row_changed (editor->model, path, &iter); gtk_tree_path_free (path); } }
static void gimp_component_editor_create_components (GimpComponentEditor *editor) { GimpImage *image = GIMP_IMAGE_EDITOR (editor)->image; gint n_components = 0; GimpChannelType components[MAX_CHANNELS]; GEnumClass *enum_class; gint i; switch (gimp_image_base_type (image)) { case GIMP_RGB: n_components = 3; components[0] = GIMP_RED_CHANNEL; components[1] = GIMP_GREEN_CHANNEL; components[2] = GIMP_BLUE_CHANNEL; break; case GIMP_GRAY: n_components = 1; components[0] = GIMP_GRAY_CHANNEL; break; case GIMP_INDEXED: n_components = 1; components[0] = GIMP_INDEXED_CHANNEL; break; } if (gimp_image_has_alpha (image)) components[n_components++] = GIMP_ALPHA_CHANNEL; enum_class = g_type_class_ref (GIMP_TYPE_CHANNEL_TYPE); for (i = 0; i < n_components; i++) { GimpViewRenderer *renderer; GtkTreeIter iter; GEnumValue *enum_value; const gchar *desc; gboolean visible; visible = gimp_image_get_component_visible (image, components[i]); renderer = gimp_view_renderer_new (GIMP_IMAGE_EDITOR (editor)->context, G_TYPE_FROM_INSTANCE (image), editor->view_size, 1, FALSE); gimp_view_renderer_set_viewable (renderer, GIMP_VIEWABLE (image)); gimp_view_renderer_remove_idle (renderer); GIMP_VIEW_RENDERER_IMAGE (renderer)->channel = components[i]; g_signal_connect (renderer, "update", G_CALLBACK (gimp_component_editor_renderer_update), editor); enum_value = g_enum_get_value (enum_class, components[i]); desc = gimp_enum_value_get_desc (enum_class, enum_value); gtk_list_store_append (GTK_LIST_STORE (editor->model), &iter); gtk_list_store_set (GTK_LIST_STORE (editor->model), &iter, COLUMN_CHANNEL, components[i], COLUMN_VISIBLE, visible, COLUMN_RENDERER, renderer, COLUMN_NAME, desc, -1); g_object_unref (renderer); if (gimp_image_get_component_active (image, components[i])) gtk_tree_selection_select_iter (editor->selection, &iter); } g_type_class_unref (enum_class); }
static void gimp_view_renderer_image_render (GimpViewRenderer *renderer, GtkWidget *widget) { GimpViewRendererImage *rendererimage = GIMP_VIEW_RENDERER_IMAGE (renderer); GimpImage *image = GIMP_IMAGE (renderer->viewable); const gchar *icon_name; /* The conditions checked here are mostly a hack to hide the fact that * we are creating the channel preview from the image preview and turning * off visibility of a channel has the side-effect of painting the channel * preview all black. See bug #459518 for details. */ if (rendererimage->channel == -1 || (gimp_image_get_component_visible (image, rendererimage->channel) && gimp_image_get_component_visible (image, GIMP_ALPHA_CHANNEL))) { gint view_width; gint view_height; gdouble xres; gdouble yres; gboolean scaling_up; GimpTempBuf *render_buf = NULL; gimp_image_get_resolution (image, &xres, &yres); gimp_viewable_calc_preview_size (gimp_image_get_width (image), gimp_image_get_height (image), renderer->width, renderer->height, renderer->dot_for_dot, xres, yres, &view_width, &view_height, &scaling_up); if (scaling_up) { GimpTempBuf *temp_buf; temp_buf = gimp_viewable_get_new_preview (renderer->viewable, renderer->context, gimp_image_get_width (image), gimp_image_get_height (image)); if (temp_buf) { render_buf = gimp_temp_buf_scale (temp_buf, view_width, view_height); gimp_temp_buf_unref (temp_buf); } } else { render_buf = gimp_viewable_get_new_preview (renderer->viewable, renderer->context, view_width, view_height); } if (render_buf) { gint render_buf_x = 0; gint render_buf_y = 0; gint component_index = -1; /* xresolution != yresolution */ if (view_width > renderer->width || view_height > renderer->height) { GimpTempBuf *temp_buf; temp_buf = gimp_temp_buf_scale (render_buf, renderer->width, renderer->height); gimp_temp_buf_unref (render_buf); render_buf = temp_buf; } if (view_width < renderer->width) render_buf_x = (renderer->width - view_width) / 2; if (view_height < renderer->height) render_buf_y = (renderer->height - view_height) / 2; if (rendererimage->channel != -1) component_index = gimp_image_get_component_index (image, rendererimage->channel); gimp_view_renderer_render_temp_buf (renderer, widget, render_buf, render_buf_x, render_buf_y, component_index, GIMP_VIEW_BG_CHECKS, GIMP_VIEW_BG_WHITE); gimp_temp_buf_unref (render_buf); return; } } switch (rendererimage->channel) { case GIMP_RED_CHANNEL: icon_name = GIMP_STOCK_CHANNEL_RED; break; case GIMP_GREEN_CHANNEL: icon_name = GIMP_STOCK_CHANNEL_GREEN; break; case GIMP_BLUE_CHANNEL: icon_name = GIMP_STOCK_CHANNEL_BLUE; break; case GIMP_GRAY_CHANNEL: icon_name = GIMP_STOCK_CHANNEL_GRAY; break; case GIMP_INDEXED_CHANNEL: icon_name = GIMP_STOCK_CHANNEL_INDEXED; break; case GIMP_ALPHA_CHANNEL: icon_name = GIMP_STOCK_CHANNEL_ALPHA; break; default: icon_name = gimp_viewable_get_icon_name (renderer->viewable); break; } gimp_view_renderer_render_icon (renderer, widget, icon_name); }