/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ /* vim:expandtab:shiftwidth=4:tabstop=4: */ /* ***** BEGIN LICENSE BLOCK ***** * Version: MPL 1.1/GPL 2.0/LGPL 2.1 * * The contents of this file are subject to the Mozilla Public License Version * 1.1 (the "License"); you may not use this file except in compliance with * the License. You may obtain a copy of the License at * http://www.mozilla.org/MPL/ * * Software distributed under the License is distributed on an "AS IS" basis, * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License * for the specific language governing rights and limitations under the * License. * * The Original Code is mozilla.org code. * * The Initial Developer of the Original Code is Christopher Blizzard * . Portions created by the Initial Developer * are Copyright (C) 2001 the Initial Developer. All Rights Reserved. * * Contributor(s): * * Alternatively, the contents of this file may be used under the terms of * either the GNU General Public License Version 2 or later (the "GPL"), or * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"), * in which case the provisions of the GPL or the LGPL are applicable instead * of those above. If you wish to allow use of your version of this file only * under the terms of either the GPL or the LGPL, and not to allow others to * use your version of this file under the terms of the MPL, indicate your * decision by deleting the provisions above and replace them with the notice * and other provisions required by the GPL or the LGPL. If you do not delete * the provisions above, a recipient may use your version of this file under * the terms of any one of the MPL, the GPL or the LGPL. * * ***** END LICENSE BLOCK ***** */ #include "mozdrawingarea.h" /* init methods */ static void moz_drawingarea_class_init (MozDrawingareaClass *klass); static void moz_drawingarea_init (MozDrawingarea *drawingarea); /* static methods */ static void moz_drawingarea_create_windows (MozDrawingarea *drawingarea, GdkWindow *parent, GtkWidget *widget, GdkVisual *visual); static void moz_drawingarea_finalize (GObject *object); static GObjectClass *parent_class = NULL; GType moz_drawingarea_get_type(void) { static GType moz_drawingarea_type = 0; if (!moz_drawingarea_type) { static GTypeInfo moz_drawingarea_info = { sizeof(MozDrawingareaClass), /* class size */ NULL, /* base_init */ NULL, /* base_finalize */ (GClassInitFunc) moz_drawingarea_class_init, /* class_init */ NULL, /* class_destroy */ NULL, /* class_data */ sizeof(MozDrawingarea), /* instance_size */ 0, /* n_preallocs */ (GInstanceInitFunc) moz_drawingarea_init, /* instance_init */ NULL, /* value_table */ }; moz_drawingarea_type = g_type_register_static (G_TYPE_OBJECT, "MozDrawingarea", &moz_drawingarea_info, 0); } return moz_drawingarea_type; } MozDrawingarea * moz_drawingarea_new (MozDrawingarea *parent, MozContainer *widget_parent, GdkVisual *visual) { MozDrawingarea *drawingarea; drawingarea = g_object_new(MOZ_DRAWINGAREA_TYPE, NULL); if (!parent) moz_drawingarea_create_windows(drawingarea, GTK_WIDGET(widget_parent)->window, GTK_WIDGET(widget_parent), visual); else moz_drawingarea_create_windows(drawingarea, parent->inner_window, GTK_WIDGET(widget_parent), visual); return drawingarea; } void moz_drawingarea_class_init (MozDrawingareaClass *klass) { GObjectClass *object_class = G_OBJECT_CLASS (klass); object_class->finalize = moz_drawingarea_finalize; parent_class = g_type_class_peek_parent(klass); } void moz_drawingarea_init (MozDrawingarea *drawingarea) { } void moz_drawingarea_reparent (MozDrawingarea *drawingarea, GdkWindow *aNewParent) { gdk_window_reparent(drawingarea->clip_window, aNewParent, 0, 0); } static void nullify_widget_pointers (gpointer data, GObject *widget) { MozDrawingarea *drawingarea = data; #ifdef DEBUG gpointer user_data; /* This function may get called twice before widget is destroyed, so the user_data may have already been nullified. */ gdk_window_get_user_data(drawingarea->inner_window, &user_data); if (user_data && widget && user_data != widget) g_critical("user_data does not match widget"); #endif gdk_window_set_user_data(drawingarea->inner_window, NULL); gdk_window_set_user_data(drawingarea->clip_window, NULL); } void moz_drawingarea_create_windows (MozDrawingarea *drawingarea, GdkWindow *parent, GtkWidget *widget, GdkVisual *visual) { GdkWindowAttr attributes; gint attributes_mask = 0; /* create the clipping window */ attributes.event_mask = 0; attributes.x = 0; attributes.y = 0; attributes.width = 1; attributes.height = 1; attributes.wclass = GDK_INPUT_OUTPUT; attributes.window_type = GDK_WINDOW_CHILD; if (!visual) { attributes.visual = gtk_widget_get_visual (widget); attributes.colormap = gtk_widget_get_colormap (widget); } else { attributes.visual = visual; attributes.colormap = gdk_colormap_new(visual, 0); } attributes_mask |= GDK_WA_VISUAL | GDK_WA_COLORMAP | GDK_WA_X | GDK_WA_Y; drawingarea->clip_window = gdk_window_new (parent, &attributes, attributes_mask); gdk_window_set_user_data(drawingarea->clip_window, widget); /* set the default pixmap to None so that you don't end up with the gtk default which is BlackPixel. */ gdk_window_set_back_pixmap(drawingarea->clip_window, NULL, FALSE); attributes.event_mask = (GDK_EXPOSURE_MASK | GDK_STRUCTURE_MASK | GDK_VISIBILITY_NOTIFY_MASK | GDK_ENTER_NOTIFY_MASK | GDK_LEAVE_NOTIFY_MASK | GDK_BUTTON_PRESS_MASK | GDK_BUTTON_RELEASE_MASK | #ifdef HAVE_GTK_MOTION_HINTS GDK_POINTER_MOTION_HINT_MASK | #endif GDK_POINTER_MOTION_MASK); /* create the inner window */ drawingarea->inner_window = gdk_window_new (drawingarea->clip_window, &attributes, attributes_mask); gdk_window_set_user_data(drawingarea->inner_window, widget); g_object_weak_ref(G_OBJECT(widget), nullify_widget_pointers, drawingarea); /* set the default pixmap to None so that you don't end up with the gtk default which is BlackPixel. */ gdk_window_set_back_pixmap(drawingarea->inner_window, NULL, FALSE); if (visual) { g_object_unref(attributes.colormap); } } void moz_drawingarea_finalize (GObject *object) { MozDrawingarea *drawingarea; gpointer user_data; g_return_if_fail(IS_MOZ_DRAWINGAREA(object)); drawingarea = MOZ_DRAWINGAREA(object); gdk_window_get_user_data(drawingarea->inner_window, &user_data); if (user_data) { g_object_weak_unref(user_data, nullify_widget_pointers, drawingarea); nullify_widget_pointers(drawingarea, NULL); } gdk_window_destroy(drawingarea->inner_window); gdk_window_destroy(drawingarea->clip_window); (* parent_class->finalize) (object); } void moz_drawingarea_move (MozDrawingarea *drawingarea, gint x, gint y) { gdk_window_move(drawingarea->clip_window, x, y); } void moz_drawingarea_resize (MozDrawingarea *drawingarea, gint width, gint height) { gdk_window_resize(drawingarea->clip_window, width, height); gdk_window_resize(drawingarea->inner_window, width, height); } void moz_drawingarea_move_resize (MozDrawingarea *drawingarea, gint x, gint y, gint width, gint height) { gdk_window_resize(drawingarea->inner_window, width, height); gdk_window_move_resize(drawingarea->clip_window, x, y, width, height); } void moz_drawingarea_set_visibility (MozDrawingarea *drawingarea, gboolean visibility) { if (visibility) { gdk_window_show_unraised(drawingarea->inner_window); gdk_window_show_unraised(drawingarea->clip_window); } else { gdk_window_hide(drawingarea->clip_window); gdk_window_hide(drawingarea->inner_window); } } void moz_drawingarea_scroll (MozDrawingarea *drawingarea, gint x, gint y) { gdk_window_scroll(drawingarea->inner_window, x, y); }