357 lines
11 KiB
C
357 lines
11 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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*
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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 "gtkhpaned.h"
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#include "gtkmain.h"
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#include "gtksignal.h"
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static void gtk_hpaned_class_init (GtkHPanedClass *klass);
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static void gtk_hpaned_init (GtkHPaned *hpaned);
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static void gtk_hpaned_size_request (GtkWidget *widget,
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GtkRequisition *requisition);
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static void gtk_hpaned_size_allocate (GtkWidget *widget,
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GtkAllocation *allocation);
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static void gtk_hpaned_draw (GtkWidget *widget,
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GdkRectangle *area);
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static void gtk_hpaned_xor_line (GtkPaned *paned);
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static gint gtk_hpaned_button_press (GtkWidget *widget,
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GdkEventButton *event);
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static gint gtk_hpaned_button_release (GtkWidget *widget,
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GdkEventButton *event);
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static gint gtk_hpaned_motion (GtkWidget *widget,
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GdkEventMotion *event);
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guint
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gtk_hpaned_get_type ()
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{
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static guint hpaned_type = 0;
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if (!hpaned_type)
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{
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GtkTypeInfo hpaned_info =
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{
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"GtkHPaned",
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sizeof (GtkHPaned),
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sizeof (GtkHPanedClass),
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(GtkClassInitFunc) gtk_hpaned_class_init,
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(GtkObjectInitFunc) gtk_hpaned_init,
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(GtkArgSetFunc) NULL,
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(GtkArgGetFunc) NULL,
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};
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hpaned_type = gtk_type_unique (gtk_paned_get_type (), &hpaned_info);
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}
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return hpaned_type;
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}
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static void
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gtk_hpaned_class_init (GtkHPanedClass *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->size_request = gtk_hpaned_size_request;
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widget_class->size_allocate = gtk_hpaned_size_allocate;
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widget_class->draw = gtk_hpaned_draw;
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widget_class->button_press_event = gtk_hpaned_button_press;
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widget_class->button_release_event = gtk_hpaned_button_release;
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widget_class->motion_notify_event = gtk_hpaned_motion;
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}
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static void
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gtk_hpaned_init (GtkHPaned *hpaned)
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{
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}
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GtkWidget*
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gtk_hpaned_new ()
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{
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GtkHPaned *hpaned;
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hpaned = gtk_type_new (gtk_hpaned_get_type ());
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return GTK_WIDGET (hpaned);
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}
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static void
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gtk_hpaned_size_request (GtkWidget *widget,
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GtkRequisition *requisition)
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{
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GtkPaned *paned;
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g_return_if_fail (widget != NULL);
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g_return_if_fail (GTK_IS_HPANED (widget));
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g_return_if_fail (requisition != NULL);
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paned = GTK_PANED (widget);
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requisition->width = 0;
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requisition->height = 0;
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if (paned->child1 && GTK_WIDGET_VISIBLE (paned->child1))
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{
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gtk_widget_size_request (paned->child1, &paned->child1->requisition);
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requisition->height = paned->child1->requisition.height;
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requisition->width = paned->child1->requisition.width;
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}
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if (paned->child2 && GTK_WIDGET_VISIBLE (paned->child2))
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{
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gtk_widget_size_request (paned->child2, &paned->child2->requisition);
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requisition->height = MAX(requisition->height,
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paned->child2->requisition.height);
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requisition->width += paned->child2->requisition.width;
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}
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requisition->width += GTK_CONTAINER (paned)->border_width * 2 + paned->gutter_size;
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requisition->height += GTK_CONTAINER (paned)->border_width * 2;
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}
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static void
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gtk_hpaned_size_allocate (GtkWidget *widget,
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GtkAllocation *allocation)
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{
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GtkPaned *paned;
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GtkAllocation child1_allocation;
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GtkAllocation child2_allocation;
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guint16 border_width;
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g_return_if_fail (widget != NULL);
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g_return_if_fail (GTK_IS_HPANED (widget));
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g_return_if_fail (allocation != NULL);
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widget->allocation = *allocation;
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paned = GTK_PANED (widget);
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border_width = GTK_CONTAINER (paned)->border_width;
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if (!paned->position_set)
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{
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if (paned->child1 && GTK_WIDGET_VISIBLE (paned->child1))
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paned->child1_size = paned->child1->requisition.width;
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else
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paned->child1_size = 0;
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}
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/* Move the handle first so we don't get extra expose events */
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paned->handle_xpos = allocation->x + paned->child1_size + border_width + paned->gutter_size / 2 - paned->handle_size / 2;
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paned->handle_ypos = allocation->y + allocation->height - border_width - 2*paned->handle_size;
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if (GTK_WIDGET_REALIZED (widget))
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{
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gdk_window_move (paned->handle, paned->handle_xpos, paned->handle_ypos);
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gdk_window_raise (paned->handle);
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}
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if (GTK_WIDGET_MAPPED (widget))
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{
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gdk_window_clear_area (widget->window,
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paned->groove_rectangle.x,
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paned->groove_rectangle.y,
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paned->groove_rectangle.width,
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paned->groove_rectangle.height);
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}
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child1_allocation.height = child2_allocation.height = allocation->height - border_width * 2;
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child1_allocation.width = paned->child1_size;
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child1_allocation.x = allocation->x + border_width;
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child1_allocation.y = child2_allocation.y = allocation->y + border_width;
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paned->groove_rectangle.x = child1_allocation.x
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+ child1_allocation.width + paned->gutter_size / 2 - 1;
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paned->groove_rectangle.y = allocation->y;
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paned->groove_rectangle.width = 2;
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paned->groove_rectangle.height = allocation->height;
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child2_allocation.x = paned->groove_rectangle.x + paned->gutter_size / 2 + 1;
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child2_allocation.width = allocation->x + allocation->width
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- child2_allocation.x - border_width;
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/* Now allocate the childen, making sure, when resizing not to
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* overlap the windows */
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if (GTK_WIDGET_MAPPED(widget) &&
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paned->child1 && GTK_WIDGET_VISIBLE (paned->child1) &&
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paned->child1->allocation.width < child1_allocation.width)
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{
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if (paned->child2 && GTK_WIDGET_VISIBLE (paned->child2))
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gtk_widget_size_allocate (paned->child2, &child2_allocation);
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gtk_widget_size_allocate (paned->child1, &child1_allocation);
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}
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else
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{
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if (paned->child1 && GTK_WIDGET_VISIBLE (paned->child1))
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gtk_widget_size_allocate (paned->child1, &child1_allocation);
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if (paned->child2 && GTK_WIDGET_VISIBLE (paned->child2))
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gtk_widget_size_allocate (paned->child2, &child2_allocation);
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}
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}
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static void
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gtk_hpaned_draw (GtkWidget *widget,
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GdkRectangle *area)
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{
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GtkPaned *paned;
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GdkRectangle child_area;
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guint16 border_width;
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g_return_if_fail (widget != NULL);
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g_return_if_fail (GTK_IS_PANED (widget));
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if (GTK_WIDGET_VISIBLE (widget) && GTK_WIDGET_MAPPED (widget))
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{
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paned = GTK_PANED (widget);
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border_width = GTK_CONTAINER (paned)->border_width;
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if (paned->child1 &&
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gtk_widget_intersect (paned->child1, area, &child_area))
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gtk_widget_draw (paned->child1, &child_area);
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if (paned->child2 &&
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gtk_widget_intersect (paned->child2, area, &child_area))
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gtk_widget_draw (paned->child2, &child_area);
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gdk_draw_line (widget->window,
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widget->style->dark_gc[widget->state],
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widget->allocation.x + border_width + paned->child1_size + paned->gutter_size / 2 - 1,
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widget->allocation.y,
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widget->allocation.x + border_width + paned->child1_size + paned->gutter_size / 2 - 1,
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widget->allocation.y + widget->allocation.height - 1);
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gdk_draw_line (widget->window,
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widget->style->light_gc[widget->state],
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widget->allocation.x + border_width + paned->child1_size + paned->gutter_size / 2,
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widget->allocation.y,
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widget->allocation.x + border_width + paned->child1_size + paned->gutter_size / 2,
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widget->allocation.y + widget->allocation.height - 1);
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}
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}
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static void
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gtk_hpaned_xor_line (GtkPaned *paned)
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{
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GtkWidget *widget;
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GdkGCValues values;
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guint16 xpos;
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widget = GTK_WIDGET(paned);
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if (!paned->xor_gc)
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{
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values.foreground = widget->style->white;
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values.function = GDK_XOR;
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values.subwindow_mode = GDK_INCLUDE_INFERIORS;
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paned->xor_gc = gdk_gc_new_with_values (widget->window,
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&values,
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GDK_GC_FOREGROUND |
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GDK_GC_FUNCTION |
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GDK_GC_SUBWINDOW);
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}
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xpos = widget->allocation.x + paned->child1_size
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+ GTK_CONTAINER(paned)->border_width + paned->gutter_size / 2;
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gdk_draw_line (widget->window, paned->xor_gc,
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xpos,
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widget->allocation.y,
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xpos,
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widget->allocation.y + widget->allocation.height - 1);
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}
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static gint
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gtk_hpaned_button_press (GtkWidget *widget, GdkEventButton *event)
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{
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GtkPaned *paned;
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g_return_val_if_fail (widget != NULL,FALSE);
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g_return_val_if_fail (GTK_IS_PANED (widget),FALSE);
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paned = GTK_PANED (widget);
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if (!paned->in_drag &&
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(event->window == paned->handle) && (event->button == 1))
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{
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paned->in_drag = TRUE;
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/* We need a server grab here, not gtk_grab_add(), since
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* we don't want to pass events on to the widget's children */
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gdk_pointer_grab (paned->handle, FALSE,
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GDK_POINTER_MOTION_HINT_MASK
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| GDK_BUTTON1_MOTION_MASK
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| GDK_BUTTON_RELEASE_MASK,
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NULL, NULL, event->time);
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paned->child1_size += event->x - paned->handle_size / 2;
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paned->child1_size = CLAMP (paned->child1_size, 0,
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widget->allocation.width - paned->gutter_size
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- 2 * GTK_CONTAINER (paned)->border_width);
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gtk_hpaned_xor_line (paned);
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}
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return TRUE;
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}
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static gint
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gtk_hpaned_button_release (GtkWidget *widget, GdkEventButton *event)
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{
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GtkPaned *paned;
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g_return_val_if_fail (widget != NULL,FALSE);
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g_return_val_if_fail (GTK_IS_PANED (widget),FALSE);
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paned = GTK_PANED (widget);
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if (paned->in_drag && (event->button == 1))
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{
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gtk_hpaned_xor_line (paned);
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paned->in_drag = FALSE;
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paned->position_set = TRUE;
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gdk_pointer_ungrab (event->time);
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gtk_widget_queue_resize (GTK_WIDGET (paned));
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}
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return TRUE;
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}
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static gint
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gtk_hpaned_motion (GtkWidget *widget, GdkEventMotion *event)
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{
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GtkPaned *paned;
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gint x;
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g_return_val_if_fail (widget != NULL, FALSE);
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g_return_val_if_fail (GTK_IS_PANED (widget), FALSE);
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if (event->is_hint || event->window != widget->window)
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gtk_widget_get_pointer(widget, &x, NULL);
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else
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x = event->x;
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paned = GTK_PANED (widget);
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if (paned->in_drag)
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{
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gtk_hpaned_xor_line (paned);
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paned->child1_size = x - GTK_CONTAINER (paned)->border_width - paned->gutter_size / 2;
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paned->child1_size = CLAMP (paned->child1_size, 0,
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widget->allocation.width - paned->gutter_size
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- 2 * GTK_CONTAINER (paned)->border_width);
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gtk_hpaned_xor_line (paned);
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}
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return TRUE;
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}
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