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author | Elliot Lee <sopwith@src.gnome.org> | 1997-11-24 22:37:52 +0000 |
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committer | Elliot Lee <sopwith@src.gnome.org> | 1997-11-24 22:37:52 +0000 |
commit | 9508b76bd2401b6b9e289b5c8ec9fc0e08909283 (patch) | |
tree | 53c88a9e5ac09e1a027e56df33bdaa66d670901b /gtk/gtkvpaned.c | |
download | gdk-pixbuf-9508b76bd2401b6b9e289b5c8ec9fc0e08909283.tar.gz |
Initial revision
Diffstat (limited to 'gtk/gtkvpaned.c')
-rw-r--r-- | gtk/gtkvpaned.c | 356 |
1 files changed, 356 insertions, 0 deletions
diff --git a/gtk/gtkvpaned.c b/gtk/gtkvpaned.c new file mode 100644 index 000000000..2dae03209 --- /dev/null +++ b/gtk/gtkvpaned.c @@ -0,0 +1,356 @@ +/* GTK - The GIMP Toolkit + * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Library General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library 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 + * Library General Public License for more details. + * + * You should have received a copy of the GNU Library General Public + * License along with this library; if not, write to the Free + * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + */ +#include "gtkvpaned.h" +#include "gtkmain.h" +#include "gtksignal.h" + +static void gtk_vpaned_class_init (GtkVPanedClass *klass); +static void gtk_vpaned_init (GtkVPaned *vpaned); +static void gtk_vpaned_size_request (GtkWidget *widget, + GtkRequisition *requisition); +static void gtk_vpaned_size_allocate (GtkWidget *widget, + GtkAllocation *allocation); +static void gtk_vpaned_draw (GtkWidget *widget, + GdkRectangle *area); +static void gtk_vpaned_xor_line (GtkPaned *paned); +static gint gtk_vpaned_button_press (GtkWidget *widget, + GdkEventButton *event); +static gint gtk_vpaned_button_release (GtkWidget *widget, + GdkEventButton *event); +static gint gtk_vpaned_motion (GtkWidget *widget, + GdkEventMotion *event); + +guint +gtk_vpaned_get_type () +{ + static guint vpaned_type = 0; + + if (!vpaned_type) + { + GtkTypeInfo vpaned_info = + { + "GtkVPaned", + sizeof (GtkVPaned), + sizeof (GtkVPanedClass), + (GtkClassInitFunc) gtk_vpaned_class_init, + (GtkObjectInitFunc) gtk_vpaned_init, + (GtkArgFunc) NULL, + }; + + vpaned_type = gtk_type_unique (gtk_paned_get_type (), &vpaned_info); + } + + return vpaned_type; +} + +static void +gtk_vpaned_class_init (GtkVPanedClass *class) +{ + GtkWidgetClass *widget_class; + + widget_class = (GtkWidgetClass*) class; + + widget_class->size_request = gtk_vpaned_size_request; + widget_class->size_allocate = gtk_vpaned_size_allocate; + widget_class->draw = gtk_vpaned_draw; + widget_class->button_press_event = gtk_vpaned_button_press; + widget_class->button_release_event = gtk_vpaned_button_release; + widget_class->motion_notify_event = gtk_vpaned_motion; +} + +static void +gtk_vpaned_init (GtkVPaned *vpaned) +{ +} + +GtkWidget* +gtk_vpaned_new () +{ + GtkVPaned *vpaned; + + vpaned = gtk_type_new (gtk_vpaned_get_type ()); + + return GTK_WIDGET (vpaned); +} + +static void +gtk_vpaned_size_request (GtkWidget *widget, + GtkRequisition *requisition) +{ + GtkPaned *paned; + + g_return_if_fail (widget != NULL); + g_return_if_fail (GTK_IS_VPANED (widget)); + g_return_if_fail (requisition != NULL); + + paned = GTK_PANED (widget); + requisition->width = 0; + requisition->height = 0; + + if (paned->child1 && GTK_WIDGET_VISIBLE (paned->child1)) + { + gtk_widget_size_request (paned->child1, &paned->child1->requisition); + + requisition->height = paned->child1->requisition.height; + requisition->width = paned->child1->requisition.width; + } + + if (paned->child2 && GTK_WIDGET_VISIBLE (paned->child2)) + { + gtk_widget_size_request (paned->child2, &paned->child2->requisition); + + requisition->width = MAX (requisition->width, + paned->child2->requisition.width); + requisition->height += paned->child2->requisition.height; + } + + requisition->height += GTK_CONTAINER (paned)->border_width * 2 + paned->gutter_size; + requisition->width += GTK_CONTAINER (paned)->border_width * 2; +} + +static void +gtk_vpaned_size_allocate (GtkWidget *widget, + GtkAllocation *allocation) +{ + GtkPaned *paned; + GtkAllocation child1_allocation; + GtkAllocation child2_allocation; + guint16 border_width; + + g_return_if_fail (widget != NULL); + g_return_if_fail (GTK_IS_VPANED (widget)); + g_return_if_fail (allocation != NULL); + + widget->allocation = *allocation; + + paned = GTK_PANED (widget); + border_width = GTK_CONTAINER (paned)->border_width; + + if (!paned->position_set) + { + if (paned->child1 && GTK_WIDGET_VISIBLE (paned->child1)) + paned->child1_size = paned->child1->requisition.height; + else + paned->child1_size = 0; + } + + /* Move the handle first so we don't get extra expose events */ + + paned->handle_xpos = allocation->x + allocation->width - border_width - 2 * paned->handle_size; + paned->handle_ypos = allocation->y + paned->child1_size + border_width + paned->gutter_size / 2 - paned->handle_size / 2; + + if (GTK_WIDGET_REALIZED (widget)) + { + gdk_window_move (paned->handle, paned->handle_xpos, paned->handle_ypos); + gdk_window_raise (paned->handle); + } + + if (GTK_WIDGET_MAPPED (widget)) + { + gdk_window_clear_area (widget->window, + paned->groove_rectangle.x, + paned->groove_rectangle.y, + paned->groove_rectangle.width, + paned->groove_rectangle.height); + } + + child1_allocation.width = child2_allocation.width = allocation->width - border_width * 2; + child1_allocation.height = paned->child1_size; + child1_allocation.x = child2_allocation.x = allocation->x + border_width; + child1_allocation.y = allocation->y + border_width; + + paned->groove_rectangle.y = child1_allocation.y + + child1_allocation.height + paned->gutter_size / 2 - 1; + paned->groove_rectangle.x = allocation->x; + paned->groove_rectangle.height = 2; + paned->groove_rectangle.width = allocation->width; + + child2_allocation.y = paned->groove_rectangle.y + paned->gutter_size / 2 + 1; + child2_allocation.height = allocation->y + allocation->height + - child2_allocation.y - border_width; + + /* Now allocate the childen, making sure, when resizing not to + * overlap the windows */ + if (GTK_WIDGET_MAPPED(widget) && + paned->child1 && GTK_WIDGET_VISIBLE (paned->child1) && + paned->child1->allocation.height < child1_allocation.height) + { + if (paned->child2 && GTK_WIDGET_VISIBLE (paned->child2)) + gtk_widget_size_allocate (paned->child2, &child2_allocation); + gtk_widget_size_allocate (paned->child1, &child1_allocation); + } + else + { + if (paned->child1 && GTK_WIDGET_VISIBLE (paned->child1)) + gtk_widget_size_allocate (paned->child1, &child1_allocation); + if (paned->child2 && GTK_WIDGET_VISIBLE (paned->child2)) + gtk_widget_size_allocate (paned->child2, &child2_allocation); + } +} + +static void +gtk_vpaned_draw (GtkWidget *widget, + GdkRectangle *area) +{ + GtkPaned *paned; + GdkRectangle child_area; + guint16 border_width; + + g_return_if_fail (widget != NULL); + g_return_if_fail (GTK_IS_PANED (widget)); + + if (GTK_WIDGET_VISIBLE (widget) && GTK_WIDGET_MAPPED (widget)) + { + paned = GTK_PANED (widget); + border_width = GTK_CONTAINER (paned)->border_width; + + if (paned->child1 && + gtk_widget_intersect (paned->child1, area, &child_area)) + gtk_widget_draw (paned->child1, &child_area); + if (paned->child2 && + gtk_widget_intersect (paned->child2, area, &child_area)) + gtk_widget_draw (paned->child2, &child_area); + + gdk_draw_line (widget->window, + widget->style->dark_gc[widget->state], + widget->allocation.x, + widget->allocation.y + border_width + paned->child1_size + paned->gutter_size / 2 - 1, + widget->allocation.x + widget->allocation.width - 1, + widget->allocation.y + border_width + paned->child1_size + paned->gutter_size / 2 - 1); + gdk_draw_line (widget->window, + widget->style->light_gc[widget->state], + widget->allocation.x, + widget->allocation.y + border_width + paned->child1_size + paned->gutter_size / 2, + widget->allocation.x + widget->allocation.width - 1, + widget->allocation.y + border_width + paned->child1_size + paned->gutter_size / 2); + } +} + +static void +gtk_vpaned_xor_line (GtkPaned *paned) +{ + GtkWidget *widget; + GdkGCValues values; + guint16 ypos; + + widget = GTK_WIDGET(paned); + + if (!paned->xor_gc) + { + values.foreground = widget->style->white; + values.function = GDK_XOR; + values.subwindow_mode = GDK_INCLUDE_INFERIORS; + paned->xor_gc = gdk_gc_new_with_values (widget->window, + &values, + GDK_GC_FOREGROUND | + GDK_GC_FUNCTION | + GDK_GC_SUBWINDOW); + } + + ypos = widget->allocation.y + paned->child1_size + + GTK_CONTAINER (paned)->border_width + paned->gutter_size / 2; + + gdk_draw_line (widget->window, paned->xor_gc, + widget->allocation.x, + ypos, + widget->allocation.x + widget->allocation.width - 1, + ypos); +} + +static gint +gtk_vpaned_button_press (GtkWidget *widget, GdkEventButton *event) +{ + GtkPaned *paned; + + g_return_val_if_fail (widget != NULL,FALSE); + g_return_val_if_fail (GTK_IS_PANED (widget),FALSE); + + paned = GTK_PANED (widget); + + if (!paned->in_drag && + (event->window == paned->handle) && (event->button == 1)) + { + paned->in_drag = TRUE; + /* We need a server grab here, not gtk_grab_add(), since + * we don't want to pass events on to the widget's children */ + gdk_pointer_grab (paned->handle, FALSE, + GDK_POINTER_MOTION_HINT_MASK + | GDK_BUTTON1_MOTION_MASK + | GDK_BUTTON_RELEASE_MASK, + NULL, NULL, event->time); + paned->child1_size += event->y - paned->handle_size / 2; + paned->child1_size = CLAMP (paned->child1_size, 0, + widget->allocation.height - paned->gutter_size + - 2 * GTK_CONTAINER (paned)->border_width); + gtk_vpaned_xor_line (paned); + } + + return TRUE; +} + +static gint +gtk_vpaned_button_release (GtkWidget *widget, GdkEventButton *event) +{ + GtkPaned *paned; + + g_return_val_if_fail (widget != NULL, FALSE); + g_return_val_if_fail (GTK_IS_PANED (widget), FALSE); + + paned = GTK_PANED (widget); + + if (paned->in_drag && (event->button == 1)) + { + gtk_vpaned_xor_line (paned); + paned->in_drag = FALSE; + paned->position_set = TRUE; + gdk_pointer_ungrab (event->time); + gtk_widget_queue_resize (GTK_WIDGET (paned)); + } + + return TRUE; +} + +static gint +gtk_vpaned_motion (GtkWidget *widget, GdkEventMotion *event) +{ + GtkPaned *paned; + gint y; + + g_return_val_if_fail (widget != NULL, FALSE); + g_return_val_if_fail (GTK_IS_PANED (widget), FALSE); + + if (event->is_hint || event->window != widget->window) + gtk_widget_get_pointer(widget, NULL, &y); + else + y = event->y; + + paned = GTK_PANED (widget); + + if (paned->in_drag) + { + gtk_vpaned_xor_line (paned); + paned->child1_size = y - GTK_CONTAINER (paned)->border_width - + paned->gutter_size/2; + paned->child1_size = CLAMP (paned->child1_size, 0, + widget->allocation.height - paned->gutter_size + - 2 * GTK_CONTAINER (paned)->border_width); + gtk_vpaned_xor_line (paned); + } + + return TRUE; +} |