diff options
Diffstat (limited to 'app/widgets/gimpoverlaybox.c')
| -rw-r--r-- | app/widgets/gimpoverlaybox.c | 497 |
1 files changed, 497 insertions, 0 deletions
diff --git a/app/widgets/gimpoverlaybox.c b/app/widgets/gimpoverlaybox.c new file mode 100644 index 0000000..a1bf47f --- /dev/null +++ b/app/widgets/gimpoverlaybox.c @@ -0,0 +1,497 @@ +/* GIMP - The GNU Image Manipulation Program + * Copyright (C) 1995 Spencer Kimball and Peter Mattis + * + * GimpOverlayBox + * Copyright (C) 2009 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 "widgets-types.h" + +#include "gimpoverlaybox.h" +#include "gimpoverlaychild.h" + + +/* local function prototypes */ + +static void gimp_overlay_box_set_property (GObject *object, + guint property_id, + const GValue *value, + GParamSpec *pspec); +static void gimp_overlay_box_get_property (GObject *object, + guint property_id, + GValue *value, + GParamSpec *pspec); + +static void gimp_overlay_box_realize (GtkWidget *widget); +static void gimp_overlay_box_unrealize (GtkWidget *widget); +static void gimp_overlay_box_size_request (GtkWidget *widget, + GtkRequisition *requisition); +static void gimp_overlay_box_size_allocate (GtkWidget *widget, + GtkAllocation *allocation); +static gboolean gimp_overlay_box_expose (GtkWidget *widget, + GdkEventExpose *event); +static gboolean gimp_overlay_box_damage (GtkWidget *widget, + GdkEventExpose *event); + +static void gimp_overlay_box_add (GtkContainer *container, + GtkWidget *widget); +static void gimp_overlay_box_remove (GtkContainer *container, + GtkWidget *widget); +static void gimp_overlay_box_forall (GtkContainer *container, + gboolean include_internals, + GtkCallback callback, + gpointer callback_data); +static GType gimp_overlay_box_child_type (GtkContainer *container); + +static GdkWindow * gimp_overlay_box_pick_embedded_child (GdkWindow *window, + gdouble x, + gdouble y, + GimpOverlayBox *box); + + +G_DEFINE_TYPE (GimpOverlayBox, gimp_overlay_box, GTK_TYPE_CONTAINER) + +#define parent_class gimp_overlay_box_parent_class + + +static void +gimp_overlay_box_class_init (GimpOverlayBoxClass *klass) +{ + GObjectClass *object_class = G_OBJECT_CLASS (klass); + GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass); + GtkContainerClass *container_class = GTK_CONTAINER_CLASS (klass); + + object_class->set_property = gimp_overlay_box_set_property; + object_class->get_property = gimp_overlay_box_get_property; + + widget_class->realize = gimp_overlay_box_realize; + widget_class->unrealize = gimp_overlay_box_unrealize; + widget_class->size_request = gimp_overlay_box_size_request; + widget_class->size_allocate = gimp_overlay_box_size_allocate; + widget_class->expose_event = gimp_overlay_box_expose; + + g_signal_override_class_handler ("damage-event", + GIMP_TYPE_OVERLAY_BOX, + G_CALLBACK (gimp_overlay_box_damage)); + + container_class->add = gimp_overlay_box_add; + container_class->remove = gimp_overlay_box_remove; + container_class->forall = gimp_overlay_box_forall; + container_class->child_type = gimp_overlay_box_child_type; +} + +static void +gimp_overlay_box_init (GimpOverlayBox *box) +{ + gtk_widget_set_has_window (GTK_WIDGET (box), TRUE); +} + +static void +gimp_overlay_box_set_property (GObject *object, + guint property_id, + const GValue *value, + GParamSpec *pspec) +{ + switch (property_id) + { + default: + G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec); + break; + } +} + +static void +gimp_overlay_box_get_property (GObject *object, + guint property_id, + GValue *value, + GParamSpec *pspec) +{ + switch (property_id) + { + default: + G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec); + break; + } +} + +static void +gimp_overlay_box_realize (GtkWidget *widget) +{ + GimpOverlayBox *box = GIMP_OVERLAY_BOX (widget); + GtkAllocation allocation; + GdkWindowAttr attributes; + gint attributes_mask; + GList *list; + + gtk_widget_set_realized (widget, TRUE); + + gtk_widget_get_allocation (widget, &allocation); + + attributes.x = allocation.x; + attributes.y = allocation.y; + attributes.width = allocation.width; + attributes.height = allocation.height; + attributes.window_type = GDK_WINDOW_CHILD; + attributes.wclass = GDK_INPUT_OUTPUT; + attributes.visual = gtk_widget_get_visual (widget); + attributes.colormap = gtk_widget_get_colormap (widget); + attributes.event_mask = gtk_widget_get_events (widget); + + attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP; + + gtk_widget_set_window (widget, + gdk_window_new (gtk_widget_get_parent_window (widget), + &attributes, attributes_mask)); + gdk_window_set_user_data (gtk_widget_get_window (widget), widget); + + g_signal_connect (gtk_widget_get_window (widget), "pick-embedded-child", + G_CALLBACK (gimp_overlay_box_pick_embedded_child), + widget); + + gtk_widget_style_attach (widget); + gtk_style_set_background (gtk_widget_get_style (widget), + gtk_widget_get_window (widget), + GTK_STATE_NORMAL); + + for (list = box->children; list; list = g_list_next (list)) + gimp_overlay_child_realize (box, list->data); +} + +static void +gimp_overlay_box_unrealize (GtkWidget *widget) +{ + GimpOverlayBox *box = GIMP_OVERLAY_BOX (widget); + GList *list; + + for (list = box->children; list; list = g_list_next (list)) + gimp_overlay_child_unrealize (box, list->data); + + GTK_WIDGET_CLASS (parent_class)->unrealize (widget); +} + +static void +gimp_overlay_box_size_request (GtkWidget *widget, + GtkRequisition *requisition) +{ + GimpOverlayBox *box = GIMP_OVERLAY_BOX (widget); + GList *list; + gint border_width; + + border_width = gtk_container_get_border_width (GTK_CONTAINER (widget)); + + requisition->width = 1 + 2 * border_width; + requisition->height = 1 + 2 * border_width; + + for (list = box->children; list; list = g_list_next (list)) + gimp_overlay_child_size_request (box, list->data); +} + +static void +gimp_overlay_box_size_allocate (GtkWidget *widget, + GtkAllocation *allocation) +{ + GimpOverlayBox *box = GIMP_OVERLAY_BOX (widget); + GList *list; + + GTK_WIDGET_CLASS (parent_class)->size_allocate (widget, allocation); + + for (list = box->children; list; list = g_list_next (list)) + gimp_overlay_child_size_allocate (box, list->data); +} + +static gboolean +gimp_overlay_box_expose (GtkWidget *widget, + GdkEventExpose *event) +{ + if (gtk_widget_is_drawable (widget)) + { + GimpOverlayBox *box = GIMP_OVERLAY_BOX (widget); + GList *list; + + for (list = box->children; list; list = g_list_next (list)) + { + if (gimp_overlay_child_expose (box, list->data, event)) + return FALSE; + } + } + + return FALSE; +} + +static gboolean +gimp_overlay_box_damage (GtkWidget *widget, + GdkEventExpose *event) +{ + GimpOverlayBox *box = GIMP_OVERLAY_BOX (widget); + GList *list; + + for (list = box->children; list; list = g_list_next (list)) + { + if (gimp_overlay_child_damage (box, list->data, event)) + return FALSE; + } + + return FALSE; +} + +static void +gimp_overlay_box_add (GtkContainer *container, + GtkWidget *widget) +{ + gimp_overlay_box_add_child (GIMP_OVERLAY_BOX (container), widget, 0.5, 0.5); +} + +static void +gimp_overlay_box_remove (GtkContainer *container, + GtkWidget *widget) +{ + GimpOverlayBox *box = GIMP_OVERLAY_BOX (container); + GimpOverlayChild *child = gimp_overlay_child_find (box, widget); + + if (child) + { + if (gtk_widget_get_visible (widget)) + gimp_overlay_child_invalidate (box, child); + + box->children = g_list_remove (box->children, child); + + gimp_overlay_child_free (box, child); + } +} + +static void +gimp_overlay_box_forall (GtkContainer *container, + gboolean include_internals, + GtkCallback callback, + gpointer callback_data) +{ + GimpOverlayBox *box = GIMP_OVERLAY_BOX (container); + GList *list; + + list = box->children; + while (list) + { + GimpOverlayChild *child = list->data; + + list = list->next; + + (* callback) (child->widget, callback_data); + } +} + +static GType +gimp_overlay_box_child_type (GtkContainer *container) +{ + return GTK_TYPE_WIDGET; +} + +static GdkWindow * +gimp_overlay_box_pick_embedded_child (GdkWindow *parent, + gdouble parent_x, + gdouble parent_y, + GimpOverlayBox *box) +{ + GList *list; + + for (list = box->children; list; list = g_list_next (list)) + { + GimpOverlayChild *child = list->data; + + if (gimp_overlay_child_pick (box, child, parent_x, parent_y)) + return child->window; + } + + return NULL; +} + + +/* public functions */ + +/** + * gimp_overlay_box_new: + * + * Creates a new #GimpOverlayBox widget. + * + * Return value: a new #GimpOverlayBox widget + **/ +GtkWidget * +gimp_overlay_box_new (void) +{ + return g_object_new (GIMP_TYPE_OVERLAY_BOX, NULL); +} + +void +gimp_overlay_box_add_child (GimpOverlayBox *box, + GtkWidget *widget, + gdouble xalign, + gdouble yalign) +{ + GimpOverlayChild *child; + + g_return_if_fail (GIMP_IS_OVERLAY_BOX (box)); + g_return_if_fail (GTK_IS_WIDGET (widget)); + + child = gimp_overlay_child_new (box, widget, xalign, yalign, 0.0, 0.85); + + box->children = g_list_append (box->children, child); +} + +void +gimp_overlay_box_set_child_alignment (GimpOverlayBox *box, + GtkWidget *widget, + gdouble xalign, + gdouble yalign) +{ + GimpOverlayChild *child = gimp_overlay_child_find (box, widget); + + if (child) + { + xalign = CLAMP (xalign, 0.0, 1.0); + yalign = CLAMP (yalign, 0.0, 1.0); + + if (child->has_position || + child->xalign != xalign || + child->yalign != yalign) + { + gimp_overlay_child_invalidate (box, child); + + child->has_position = FALSE; + child->xalign = xalign; + child->yalign = yalign; + + gtk_widget_queue_resize (widget); + } + } +} + +void +gimp_overlay_box_set_child_position (GimpOverlayBox *box, + GtkWidget *widget, + gdouble x, + gdouble y) +{ + GimpOverlayChild *child = gimp_overlay_child_find (box, widget); + + if (child) + { + if (! child->has_position || + child->x != x || + child->y != y) + { + gimp_overlay_child_invalidate (box, child); + + child->has_position = TRUE; + child->x = x; + child->y = y; + + gtk_widget_queue_resize (widget); + } + } +} + +void +gimp_overlay_box_set_child_angle (GimpOverlayBox *box, + GtkWidget *widget, + gdouble angle) +{ + GimpOverlayChild *child = gimp_overlay_child_find (box, widget); + + if (child) + { + if (child->angle != angle) + { + gimp_overlay_child_invalidate (box, child); + + child->angle = angle; + + gtk_widget_queue_draw (widget); + } + } +} + +void +gimp_overlay_box_set_child_opacity (GimpOverlayBox *box, + GtkWidget *widget, + gdouble opacity) +{ + GimpOverlayChild *child = gimp_overlay_child_find (box, widget); + + if (child) + { + opacity = CLAMP (opacity, 0.0, 1.0); + + if (child->opacity != opacity) + { + child->opacity = opacity; + + gtk_widget_queue_draw (widget); + } + } +} + +/** + * gimp_overlay_box_scroll: + * @box: the #GimpOverlayBox widget to scroll. + * @offset_x: the x scroll amount. + * @offset_y: the y scroll amount. + * + * Scrolls the box using gdk_window_scroll() and makes sure the result + * is displayed immediately by calling gdk_window_process_updates(). + **/ +void +gimp_overlay_box_scroll (GimpOverlayBox *box, + gint offset_x, + gint offset_y) +{ + GtkWidget *widget; + GdkWindow *window; + GList *list; + + g_return_if_fail (GIMP_IS_OVERLAY_BOX (box)); + + widget = GTK_WIDGET (box); + + /* bug 761118 */ + if (! gtk_widget_get_realized (widget)) + return; + + window = gtk_widget_get_window (widget); + + /* Undraw all overlays */ + for (list = box->children; list; list = g_list_next (list)) + { + GimpOverlayChild *child = list->data; + + gimp_overlay_child_invalidate (box, child); + } + + gdk_window_scroll (window, offset_x, offset_y); + + /* Re-draw all overlays */ + for (list = box->children; list; list = g_list_next (list)) + { + GimpOverlayChild *child = list->data; + + gimp_overlay_child_invalidate (box, child); + } + + /* Make sure expose events are processed before scrolling again */ + gdk_window_process_updates (window, FALSE); +} |