diff options
Diffstat (limited to 'app/widgets/gimpoverlayframe.c')
| -rw-r--r-- | app/widgets/gimpoverlayframe.c | 172 |
1 files changed, 172 insertions, 0 deletions
diff --git a/app/widgets/gimpoverlayframe.c b/app/widgets/gimpoverlayframe.c new file mode 100644 index 0000000..2a646e1 --- /dev/null +++ b/app/widgets/gimpoverlayframe.c @@ -0,0 +1,172 @@ +/* GIMP - The GNU Image Manipulation Program + * Copyright (C) 1995 Spencer Kimball and Peter Mattis + * + * gimpoverlayframe.c + * Copyright (C) 2010 Michael Natterer <mitch@gimp.org> + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <https://www.gnu.org/licenses/>. + */ + +#include "config.h" + +#include <gtk/gtk.h> + +#include "libgimpmath/gimpmath.h" + +#include "widgets-types.h" + +#include "core/gimp-cairo.h" + +#include "gimpoverlayframe.h" +#include "gimpwidgets-utils.h" + + +static void gimp_overlay_frame_size_request (GtkWidget *widget, + GtkRequisition *requisition); +static void gimp_overlay_frame_size_allocate (GtkWidget *widget, + GtkAllocation *allocation); +static gboolean gimp_overlay_frame_expose (GtkWidget *widget, + GdkEventExpose *eevent); + + +G_DEFINE_TYPE (GimpOverlayFrame, gimp_overlay_frame, GTK_TYPE_BIN) + +#define parent_class gimp_overlay_frame_parent_class + + +static void +gimp_overlay_frame_class_init (GimpOverlayFrameClass *klass) +{ + GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass); + + widget_class->size_request = gimp_overlay_frame_size_request; + widget_class->size_allocate = gimp_overlay_frame_size_allocate; + widget_class->expose_event = gimp_overlay_frame_expose; +} + +static void +gimp_overlay_frame_init (GimpOverlayFrame *frame) +{ + gtk_widget_set_app_paintable (GTK_WIDGET (frame), TRUE); +} + +static void +gimp_overlay_frame_size_request (GtkWidget *widget, + GtkRequisition *requisition) +{ + GtkWidget *child = gtk_bin_get_child (GTK_BIN (widget)); + GtkRequisition child_requisition; + gint border_width; + + border_width = gtk_container_get_border_width (GTK_CONTAINER (widget)); + + requisition->width = border_width * 2; + requisition->height = border_width * 2; + + if (child && gtk_widget_get_visible (child)) + { + gtk_widget_size_request (child, &child_requisition); + } + else + { + child_requisition.width = 0; + child_requisition.height = 0; + } + + requisition->width += child_requisition.width; + requisition->height += child_requisition.height; +} + +static void +gimp_overlay_frame_size_allocate (GtkWidget *widget, + GtkAllocation *allocation) +{ + GtkWidget *child = gtk_bin_get_child (GTK_BIN (widget)); + GtkAllocation child_allocation; + gint border_width; + + gtk_widget_set_allocation (widget, allocation); + + border_width = gtk_container_get_border_width (GTK_CONTAINER (widget)); + + if (child && gtk_widget_get_visible (child)) + { + child_allocation.x = allocation->x + border_width; + child_allocation.y = allocation->y + border_width; + child_allocation.width = MAX (allocation->width - 2 * border_width, 0); + child_allocation.height = MAX (allocation->height - 2 * border_width, 0); + + gtk_widget_size_allocate (child, &child_allocation); + } +} + +static gboolean +gimp_overlay_frame_expose (GtkWidget *widget, + GdkEventExpose *eevent) +{ + cairo_t *cr = gdk_cairo_create (gtk_widget_get_window (widget)); + GtkStyle *style = gtk_widget_get_style (widget); + GtkAllocation allocation; + gboolean rgba; + gint border_width; + + rgba = gdk_screen_get_rgba_colormap (gtk_widget_get_screen (widget)) != NULL; + + gdk_cairo_region (cr, eevent->region); + cairo_clip (cr); + + if (rgba) + { + cairo_set_operator (cr, CAIRO_OPERATOR_CLEAR); + cairo_paint (cr); + cairo_set_operator (cr, CAIRO_OPERATOR_OVER); + } + + gtk_widget_get_allocation (widget, &allocation); + border_width = gtk_container_get_border_width (GTK_CONTAINER (widget)); + + if (rgba) + { + gimp_cairo_rounded_rectangle (cr, + 0.0, 0.0, + allocation.width, allocation.height, + border_width); + } + else + { + cairo_rectangle (cr, 0, 0, allocation.width, allocation.height); + } + + cairo_clip_preserve (cr); + + gdk_cairo_set_source_color (cr, &style->bg[GTK_STATE_NORMAL]); + cairo_paint (cr); + + if (border_width > 0) + { + cairo_set_line_width (cr, 2.0); + gdk_cairo_set_source_color (cr, &style->fg[GTK_STATE_NORMAL]); + cairo_stroke (cr); + } + + cairo_destroy (cr); + + return GTK_WIDGET_CLASS (parent_class)->expose_event (widget, eevent); +} + +GtkWidget * +gimp_overlay_frame_new (void) +{ + return g_object_new (GIMP_TYPE_OVERLAY_FRAME, NULL); +} |