static void update_preview_image (GthPreviewTool *self) { cairo_surface_t *image; int width; int height; GtkAllocation allocation; int max_size; if (self->priv->preview_image != NULL) { cairo_surface_destroy (self->priv->preview_image); self->priv->preview_image = NULL; } image = gth_image_viewer_get_current_image (GTH_IMAGE_VIEWER (self->priv->viewer)); if (image == NULL) return; width = cairo_image_surface_get_width (image); height = cairo_image_surface_get_height (image); gtk_widget_get_allocation (GTK_WIDGET (self->priv->viewer), &allocation); max_size = MAX (allocation.width, allocation.height) / G_SQRT2 + 2; if (scale_keeping_ratio (&width, &height, max_size, max_size, FALSE)) self->priv->preview_image = _cairo_image_surface_scale_bilinear (image, width, height); else self->priv->preview_image = cairo_surface_reference (image); self->priv->preview_image_area.width = width; self->priv->preview_image_area.height = height; self->priv->preview_image_area.x = MAX ((allocation.width - self->priv->preview_image_area.width) / 2 - 0.5, 0); self->priv->preview_image_area.y = MAX ((allocation.height - self->priv->preview_image_area.height) / 2 - 0.5, 0); }
static void update_image_surface (GthImageRotator *self) { GtkAllocation allocation; cairo_surface_t *image; int max_size; int width; int height; cairo_surface_t *preview_image; if (self->priv->preview_image != NULL) { cairo_surface_destroy (self->priv->preview_image); self->priv->preview_image = NULL; } image = gth_image_viewer_get_current_image (GTH_IMAGE_VIEWER (self->priv->viewer)); if (image == NULL) return; self->priv->original_width = cairo_image_surface_get_width (image); self->priv->original_height = cairo_image_surface_get_height (image); width = self->priv->original_width; height = self->priv->original_height; gtk_widget_get_allocation (GTK_WIDGET (self->priv->viewer), &allocation); max_size = MAX (allocation.width, allocation.height) / G_SQRT2 + 2; if (scale_keeping_ratio (&width, &height, max_size, max_size, FALSE)) preview_image = _cairo_image_surface_scale_bilinear (image, width, height); else preview_image = cairo_surface_reference (image); self->priv->preview_zoom = (double) width / self->priv->original_width; self->priv->preview_image = preview_image; self->priv->preview_image_area.width = width; self->priv->preview_image_area.height = height; self->priv->preview_image_area.x = MAX ((allocation.width - self->priv->preview_image_area.width) / 2 - 0.5, 0); self->priv->preview_image_area.y = MAX ((allocation.height - self->priv->preview_image_area.height) / 2 - 0.5, 0); _gth_image_rotator_update_tranformation_matrix (self); }
static GtkWidget * gth_file_tool_grayscale_get_options (GthFileTool *base) { GthFileToolGrayscale *self; GtkWidget *window; GtkWidget *viewer_page; GtkWidget *viewer; cairo_surface_t *source; GtkWidget *options; int width, height; GtkAllocation allocation; self = (GthFileToolGrayscale *) base; window = gth_file_tool_get_window (base); viewer_page = gth_browser_get_viewer_page (GTH_BROWSER (window)); if (! GTH_IS_IMAGE_VIEWER_PAGE (viewer_page)) return NULL; cairo_surface_destroy (self->priv->destination); cairo_surface_destroy (self->priv->preview); viewer = gth_image_viewer_page_get_image_viewer (GTH_IMAGE_VIEWER_PAGE (viewer_page)); source = gth_image_viewer_page_tool_get_source (GTH_IMAGE_VIEWER_PAGE_TOOL (self)); if (source == NULL) return NULL; width = cairo_image_surface_get_width (source); height = cairo_image_surface_get_height (source); gtk_widget_get_allocation (GTK_WIDGET (viewer), &allocation); if (scale_keeping_ratio (&width, &height, PREVIEW_SIZE * allocation.width, PREVIEW_SIZE * allocation.height, FALSE)) self->priv->preview = _cairo_image_surface_scale_bilinear (source, width, height); else self->priv->preview = cairo_surface_reference (source); self->priv->destination = cairo_surface_reference (self->priv->preview); self->priv->apply_to_original = FALSE; self->priv->closing = FALSE; self->priv->builder = _gtk_builder_new_from_file ("grayscale-options.ui", "file_tools"); options = _gtk_builder_get_widget (self->priv->builder, "options"); gtk_widget_show (options); g_signal_connect (GET_WIDGET ("ok_button"), "clicked", G_CALLBACK (ok_button_clicked_cb), self); g_signal_connect_swapped (GET_WIDGET ("cancel_button"), "clicked", G_CALLBACK (gth_file_tool_cancel), self); g_signal_connect (GET_WIDGET ("brightness_radiobutton"), "clicked", G_CALLBACK (method_changed_cb), self); g_signal_connect (GET_WIDGET ("saturation_radiobutton"), "clicked", G_CALLBACK (method_changed_cb), self); g_signal_connect (GET_WIDGET ("average_radiobutton"), "clicked", G_CALLBACK (method_changed_cb), self); g_signal_connect (GET_WIDGET ("preview_checkbutton"), "toggled", G_CALLBACK (preview_checkbutton_toggled_cb), self); self->priv->preview_tool = gth_preview_tool_new (); gth_preview_tool_set_image (GTH_PREVIEW_TOOL (self->priv->preview_tool), self->priv->preview); gth_image_viewer_set_tool (GTH_IMAGE_VIEWER (viewer), self->priv->preview_tool); apply_changes (self); return options; }