441 lines
12 KiB
C
441 lines
12 KiB
C
/* GTK - The GIMP Toolkit
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* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
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* Copyright (C) 1998 Elliot Lee
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the Free
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* Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <stdlib.h>
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#include "gtksignal.h"
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#include "gtkhandlebox.h"
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#include <gdk/gdkx.h>
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#define DRAG_HANDLE_SIZE 10
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#define BORDER_SIZE 5
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static void gtk_handle_box_class_init (GtkHandleBoxClass *klass);
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static void gtk_handle_box_init (GtkHandleBox *handle_box);
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static void gtk_handle_box_realize (GtkWidget *widget);
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static void gtk_handle_box_size_request (GtkWidget *widget,
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GtkRequisition *requisition);
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static void gtk_handle_box_size_allocate (GtkWidget *widget,
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GtkAllocation *allocation);
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static void gtk_handle_box_paint (GtkWidget *widget,
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GdkRectangle *area);
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static void gtk_handle_box_draw (GtkWidget *widget,
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GdkRectangle *area);
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static gint gtk_handle_box_expose (GtkWidget *widget,
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GdkEventExpose *event);
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static gint gtk_handle_box_button_changed(GtkWidget *widget,
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GdkEventButton *event);
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static gint gtk_handle_box_motion (GtkWidget *widget,
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GdkEventMotion *event);
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guint
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gtk_handle_box_get_type ()
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{
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static guint handle_box_type = 0;
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if (!handle_box_type)
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{
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GtkTypeInfo handle_box_info =
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{
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"GtkHandleBox",
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sizeof (GtkHandleBox),
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sizeof (GtkHandleBoxClass),
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(GtkClassInitFunc) gtk_handle_box_class_init,
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(GtkObjectInitFunc) gtk_handle_box_init,
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(GtkArgFunc) NULL,
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};
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handle_box_type = gtk_type_unique (gtk_event_box_get_type (), &handle_box_info);
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}
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return handle_box_type;
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}
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static void
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gtk_handle_box_class_init (GtkHandleBoxClass *class)
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{
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GtkWidgetClass *widget_class;
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widget_class = (GtkWidgetClass*) class;
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widget_class->realize = gtk_handle_box_realize;
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widget_class->size_request = gtk_handle_box_size_request;
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widget_class->size_allocate = gtk_handle_box_size_allocate;
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widget_class->draw = gtk_handle_box_draw;
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widget_class->expose_event = gtk_handle_box_expose;
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widget_class->button_press_event = gtk_handle_box_button_changed;
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widget_class->button_release_event = gtk_handle_box_button_changed;
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widget_class->motion_notify_event = gtk_handle_box_motion;
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}
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static void
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gtk_handle_box_init (GtkHandleBox *handle_box)
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{
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GTK_WIDGET_UNSET_FLAGS (handle_box, GTK_NO_WINDOW);
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GTK_WIDGET_SET_FLAGS (handle_box, GTK_BASIC);
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handle_box->is_being_dragged = FALSE;
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handle_box->is_onroot = FALSE;
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handle_box->real_parent = NULL;
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}
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GtkWidget*
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gtk_handle_box_new ()
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{
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return GTK_WIDGET ( gtk_type_new (gtk_handle_box_get_type ()));
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}
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static void
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gtk_handle_box_realize (GtkWidget *widget)
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{
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GdkWindowAttr attributes;
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gint attributes_mask;
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g_return_if_fail (widget != NULL);
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g_return_if_fail (GTK_IS_HANDLE_BOX (widget));
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GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
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attributes.x = widget->allocation.x;
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attributes.y = widget->allocation.y;
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attributes.width = widget->allocation.width;
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attributes.height = widget->allocation.height;
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attributes.window_type = GDK_WINDOW_CHILD;
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attributes.wclass = GDK_INPUT_OUTPUT;
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attributes.visual = gtk_widget_get_visual (widget);
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attributes.colormap = gtk_widget_get_colormap (widget);
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attributes.event_mask = gtk_widget_get_events (widget)
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| GDK_BUTTON_MOTION_MASK
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| GDK_BUTTON_PRESS_MASK
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| GDK_BUTTON_RELEASE_MASK
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| GDK_EXPOSURE_MASK
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| GDK_ENTER_NOTIFY_MASK
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| GDK_LEAVE_NOTIFY_MASK;
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attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
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widget->window = gdk_window_new (widget->parent->window, &attributes, attributes_mask);
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gdk_window_set_user_data (widget->window, widget);
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widget->style = gtk_style_attach (widget->style, widget->window);
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gtk_style_set_background (widget->style, widget->window, GTK_STATE_NORMAL);
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}
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static void
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gtk_handle_box_size_request (GtkWidget *widget,
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GtkRequisition *requisition)
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{
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GtkBin *bin;
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GtkHandleBox *hb;
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g_return_if_fail (widget != NULL);
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g_return_if_fail (GTK_IS_HANDLE_BOX (widget));
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g_return_if_fail (requisition != NULL);
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bin = GTK_BIN (widget);
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hb = GTK_HANDLE_BOX(widget);
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requisition->width = DRAG_HANDLE_SIZE + GTK_CONTAINER(widget)->border_width * 2;
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requisition->height = GTK_CONTAINER(widget)->border_width * 2;
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if (bin->child && GTK_WIDGET_VISIBLE (bin->child))
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{
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gtk_widget_size_request (bin->child, &bin->child->requisition);
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requisition->width += bin->child->requisition.width;
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requisition->height += bin->child->requisition.height;
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}
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hb->real_requisition = *requisition;
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if (hb->is_onroot)
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requisition->height = 3;
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}
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static void
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gtk_handle_box_size_allocate (GtkWidget *widget,
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GtkAllocation *allocation)
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{
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GtkBin *bin;
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GtkAllocation child_allocation;
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GtkHandleBox *hb;
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g_return_if_fail (widget != NULL);
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g_return_if_fail (GTK_IS_HANDLE_BOX (widget));
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g_return_if_fail (allocation != NULL);
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widget->allocation = *allocation;
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bin = GTK_BIN (widget);
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hb = GTK_HANDLE_BOX(widget);
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child_allocation.x = GTK_CONTAINER(widget)->border_width + DRAG_HANDLE_SIZE;
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child_allocation.y = GTK_CONTAINER(widget)->border_width;
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if (hb->is_onroot)
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{
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child_allocation.width = bin->child->requisition.width;
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child_allocation.height = bin->child->requisition.height;
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}
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else
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{
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child_allocation.width = (allocation->width - DRAG_HANDLE_SIZE
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- GTK_CONTAINER(widget)->border_width * 2);
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child_allocation.height = allocation->height - GTK_CONTAINER(widget)->border_width * 2;
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}
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if (bin->child && GTK_WIDGET_VISIBLE (bin->child))
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{
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gtk_widget_size_allocate (bin->child, &child_allocation);
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}
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if (GTK_WIDGET_REALIZED (widget))
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{
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gdk_window_resize (widget->window,
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child_allocation.width + DRAG_HANDLE_SIZE,
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child_allocation.height);
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if (!hb->is_onroot)
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gdk_window_move (widget->window,
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allocation->x + GTK_CONTAINER(widget)->border_width,
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allocation->y + GTK_CONTAINER(widget)->border_width);
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}
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}
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static void
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gtk_handle_box_paint(GtkWidget *widget,
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GdkRectangle *area)
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{
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GtkHandleBox *hb;
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gint startx, endx, x;
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gint line_y2;
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hb = GTK_HANDLE_BOX(widget);
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startx = 1;
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endx = DRAG_HANDLE_SIZE;
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if (area->x > startx)
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startx = area->x;
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if ((area->x + area->width) < endx)
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endx = area->x + area->width;
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line_y2 = area->y + area->height;
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for(x = startx; x < DRAG_HANDLE_SIZE; x += 3)
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gtk_draw_vline(widget->style,
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widget->window,
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GTK_WIDGET_STATE(widget),
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area->y, line_y2,
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x);
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if (GTK_BIN(widget)->child)
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gtk_draw_shadow(widget->style,
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widget->window,
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GTK_WIDGET_STATE(widget),
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GTK_SHADOW_OUT,
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0, 0,
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GTK_BIN(widget)->child->allocation.width + DRAG_HANDLE_SIZE,
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GTK_BIN(widget)->child->allocation.height);
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if (hb->is_onroot)
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gtk_draw_hline(widget->style,
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widget->parent->window,
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GTK_WIDGET_STATE(widget),
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widget->allocation.x,
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widget->allocation.x + widget->allocation.width,
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widget->allocation.y);
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}
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static void
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gtk_handle_box_draw (GtkWidget *widget,
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GdkRectangle *area)
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{
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GtkBin *bin;
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GdkRectangle child_area;
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g_return_if_fail (widget != NULL);
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g_return_if_fail (GTK_IS_HANDLE_BOX (widget));
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g_return_if_fail (area != NULL);
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if (GTK_WIDGET_DRAWABLE (widget))
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{
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bin = GTK_BIN (widget);
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gtk_handle_box_paint(widget, area);
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if (bin->child)
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{
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if (gtk_widget_intersect (bin->child, area, &child_area))
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gtk_widget_draw (bin->child, &child_area);
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}
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}
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}
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static gint
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gtk_handle_box_expose (GtkWidget *widget,
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GdkEventExpose *event)
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{
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GtkBin *bin;
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GdkEventExpose child_event;
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g_return_val_if_fail (widget != NULL, FALSE);
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g_return_val_if_fail (GTK_IS_HANDLE_BOX (widget), FALSE);
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g_return_val_if_fail (event != NULL, FALSE);
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if (GTK_WIDGET_DRAWABLE (widget))
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{
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bin = GTK_BIN (widget);
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gtk_handle_box_paint(widget, &event->area);
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child_event = *event;
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if (bin->child &&
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GTK_WIDGET_NO_WINDOW (bin->child) &&
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gtk_widget_intersect (bin->child, &event->area, &child_event.area))
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gtk_widget_event (bin->child, (GdkEvent*) &child_event);
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}
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return FALSE;
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}
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static gint dragoff_x, dragoff_y;
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static gint parentx, parenty;
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static void
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gtk_handle_box_get_parent_position(GtkWidget *widget,
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gint *x, gint *y)
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{
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gdk_window_get_origin(widget->parent->window, x, y);
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*x += widget->allocation.x;
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*y += widget->allocation.y;
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}
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static gint
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gtk_handle_box_button_changed(GtkWidget *widget,
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GdkEventButton *event)
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{
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GtkHandleBox *hb;
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g_return_val_if_fail(widget != NULL, FALSE);
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g_return_val_if_fail(GTK_IS_HANDLE_BOX(widget), FALSE);
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g_return_val_if_fail(event != NULL, FALSE);
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hb = GTK_HANDLE_BOX(widget);
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if (event->button == 1)
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{
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if (event->type == GDK_BUTTON_PRESS
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&& event->x < DRAG_HANDLE_SIZE)
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{
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dragoff_x = event->x;
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dragoff_y = event->y;
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gtk_handle_box_get_parent_position(widget,
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&parentx,
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&parenty);
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hb->is_being_dragged = TRUE;
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gdk_pointer_grab(widget->window,
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TRUE,
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GDK_POINTER_MOTION_MASK
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|GDK_BUTTON_RELEASE_MASK,
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GDK_ROOT_PARENT(),
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NULL,
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GDK_CURRENT_TIME);
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}
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else if (event->type == GDK_BUTTON_RELEASE)
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{
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gdk_pointer_ungrab(GDK_CURRENT_TIME);
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hb->is_being_dragged = FALSE;
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}
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}
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return TRUE;
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}
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void
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gtk_handle_box_set_location (GtkWidget *widget,
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gboolean in_root,
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gint x, gint y)
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{
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GtkHandleBox *hb;
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hb = GTK_HANDLE_BOX(widget);
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if (in_root != FALSE)
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{
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GTK_HANDLE_BOX(widget)->is_onroot = TRUE;
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if (x < 0)
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x = parentx;
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if (y < 0)
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y = parenty;
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gdk_window_set_override_redirect(widget->window, TRUE);
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gdk_window_reparent(widget->window, GDK_ROOT_PARENT(),
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x, y);
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gdk_window_raise(widget->window);
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widget->requisition = hb->real_requisition;
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gtk_widget_queue_resize(widget->parent);
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gdk_pointer_ungrab(GDK_CURRENT_TIME);
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gdk_pointer_grab(widget->window,
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TRUE,
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GDK_POINTER_MOTION_MASK
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|GDK_BUTTON_RELEASE_MASK,
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GDK_ROOT_PARENT(),
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NULL,
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GDK_CURRENT_TIME);
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}
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else
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{
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GTK_HANDLE_BOX(widget)->is_onroot = FALSE;
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gdk_window_reparent(widget->window, widget->parent->window,
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widget->allocation.x, widget->allocation.y);
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widget->requisition.height = 3;
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gtk_widget_queue_resize(widget->parent);
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}
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}
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static gint
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gtk_handle_box_motion (GtkWidget *widget,
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GdkEventMotion *event)
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{
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GtkHandleBox *hb;
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gint newx, newy;
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g_return_val_if_fail(widget != NULL, FALSE);
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g_return_val_if_fail(GTK_IS_HANDLE_BOX(widget), FALSE);
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g_return_val_if_fail(event != NULL, FALSE);
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hb = GTK_HANDLE_BOX(widget);
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if (hb->is_being_dragged) {
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newx = event->x_root - dragoff_x;
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newy = event->y_root - dragoff_y;
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if (newx < 0)
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newx = 0;
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if (newy < 0)
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newy = 0;
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if (abs(parentx - newx) < 10
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&& abs(parenty - newy) < 10)
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{
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if (hb->is_onroot == TRUE)
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gtk_handle_box_set_location(widget, FALSE, 0, 0);
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}
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else
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{
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if (hb->is_onroot == FALSE)
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gtk_handle_box_set_location(widget, TRUE, parentx, parenty);
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gdk_window_move(widget->window, newx, newy);
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}
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}
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return TRUE;
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}
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