11d37c5067
Sun Jan 18 09:57:00 1998 Owen Taylor <owt1@cornell.edu> * gtkbutton.c gtkclist.c gtkdrawingarea.c gtkentry.c gtkeventbox.c gtkfixed.c gtkhandlebox.c gtkhscale.c gtkhscrollbar.c gtkitem.c gtklist.c gtkmenushell.c gtkmisc.c gtknotebook.c gtkpaned.c gtkpreview.c gtkprogressbar.c gtkruler.c gtktext.c gtktree.c gtkviewport.c gtkvscale.c gtkvscrollbar.c gtkwidget.{c,h} Added gtk_widget_set_parent and gtk_widget_get_parent. All widgets should use: gtk_widget_get_parent() instead of widget->parent->window. Any widget that wants to have children not in the parent window, should use gtk_widget_set_parent () in their realize() and add () routines. CList and Viewport widgets changed to do this. (Viewport widget using code from gtk-fortier-980117-0.patch.)
392 lines
12 KiB
C
392 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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*
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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 "gtkvscrollbar.h"
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#include "gtksignal.h"
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#include "gdk/gdkkeysyms.h"
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#define EPSILON 0.01
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#define RANGE_CLASS(w) GTK_RANGE_CLASS (GTK_OBJECT (w)->klass)
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static void gtk_vscrollbar_class_init (GtkVScrollbarClass *klass);
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static void gtk_vscrollbar_init (GtkVScrollbar *vscrollbar);
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static void gtk_vscrollbar_realize (GtkWidget *widget);
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static void gtk_vscrollbar_size_allocate (GtkWidget *widget,
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GtkAllocation *allocation);
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static void gtk_vscrollbar_draw_step_forw (GtkRange *range);
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static void gtk_vscrollbar_draw_step_back (GtkRange *range);
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static void gtk_vscrollbar_slider_update (GtkRange *range);
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static void gtk_vscrollbar_calc_slider_size (GtkVScrollbar *vscrollbar);
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static gint gtk_vscrollbar_trough_keys (GtkRange *range,
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GdkEventKey *key,
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GtkScrollType *scroll,
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GtkTroughType *pos);
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guint
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gtk_vscrollbar_get_type ()
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{
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static guint vscrollbar_type = 0;
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if (!vscrollbar_type)
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{
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GtkTypeInfo vscrollbar_info =
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{
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"GtkVScrollbar",
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sizeof (GtkVScrollbar),
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sizeof (GtkVScrollbarClass),
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(GtkClassInitFunc) gtk_vscrollbar_class_init,
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(GtkObjectInitFunc) gtk_vscrollbar_init,
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(GtkArgSetFunc) NULL,
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(GtkArgGetFunc) NULL,
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};
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vscrollbar_type = gtk_type_unique (gtk_scrollbar_get_type (), &vscrollbar_info);
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}
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return vscrollbar_type;
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}
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static void
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gtk_vscrollbar_class_init (GtkVScrollbarClass *klass)
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{
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GtkWidgetClass *widget_class;
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GtkRangeClass *range_class;
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widget_class = (GtkWidgetClass*) klass;
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range_class = (GtkRangeClass*) klass;
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widget_class->realize = gtk_vscrollbar_realize;
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widget_class->size_allocate = gtk_vscrollbar_size_allocate;
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range_class->draw_step_forw = gtk_vscrollbar_draw_step_forw;
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range_class->draw_step_back = gtk_vscrollbar_draw_step_back;
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range_class->slider_update = gtk_vscrollbar_slider_update;
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range_class->trough_click = gtk_range_default_vtrough_click;
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range_class->trough_keys = gtk_vscrollbar_trough_keys;
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range_class->motion = gtk_range_default_vmotion;
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}
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static void
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gtk_vscrollbar_init (GtkVScrollbar *vscrollbar)
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{
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GtkWidget *widget;
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GtkRequisition *requisition;
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widget = GTK_WIDGET (vscrollbar);
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GTK_WIDGET_SET_FLAGS (widget, GTK_CAN_FOCUS);
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requisition = &widget->requisition;
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requisition->width = (RANGE_CLASS (widget)->slider_width +
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widget->style->klass->xthickness * 2);
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requisition->height = (RANGE_CLASS (widget)->min_slider_size +
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RANGE_CLASS (widget)->stepper_size +
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RANGE_CLASS (widget)->stepper_slider_spacing +
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widget->style->klass->ythickness) * 2;
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}
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GtkWidget*
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gtk_vscrollbar_new (GtkAdjustment *adjustment)
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{
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GtkVScrollbar *vscrollbar;
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vscrollbar = gtk_type_new (gtk_vscrollbar_get_type ());
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if (!adjustment)
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adjustment = (GtkAdjustment*) gtk_adjustment_new (0.0, 0.0, 0.0, 0.0, 0.0, 0.0);
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gtk_range_set_adjustment (GTK_RANGE (vscrollbar), adjustment);
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return GTK_WIDGET (vscrollbar);
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}
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static void
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gtk_vscrollbar_realize (GtkWidget *widget)
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{
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GtkRange *range;
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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_VSCROLLBAR (widget));
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GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
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range = GTK_RANGE (widget);
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attributes.x = widget->allocation.x + (widget->allocation.width - widget->requisition.width) / 2;
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attributes.y = widget->allocation.y;
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attributes.width = widget->requisition.width;
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attributes.height = widget->allocation.height;
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attributes.wclass = GDK_INPUT_OUTPUT;
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attributes.window_type = GDK_WINDOW_CHILD;
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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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attributes.event_mask |= (GDK_EXPOSURE_MASK |
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GDK_BUTTON_PRESS_MASK |
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GDK_BUTTON_RELEASE_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 (gtk_widget_get_parent_window (widget), &attributes, attributes_mask);
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range->trough = widget->window;
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gdk_window_ref (range->trough);
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attributes.x = widget->style->klass->xthickness;
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attributes.y = widget->style->klass->ythickness;
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attributes.width = RANGE_CLASS (widget)->stepper_size;
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attributes.height = RANGE_CLASS (widget)->stepper_size;
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range->step_back = gdk_window_new (range->trough, &attributes, attributes_mask);
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attributes.y = (widget->allocation.height -
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widget->style->klass->ythickness -
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RANGE_CLASS (widget)->stepper_size);
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range->step_forw = gdk_window_new (range->trough, &attributes, attributes_mask);
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attributes.x = widget->style->klass->ythickness;
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attributes.y = 0;
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attributes.width = RANGE_CLASS (widget)->slider_width;
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attributes.height = RANGE_CLASS (widget)->min_slider_size;
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attributes.event_mask |= (GDK_BUTTON_MOTION_MASK |
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GDK_POINTER_MOTION_HINT_MASK);
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range->slider = gdk_window_new (range->trough, &attributes, attributes_mask);
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gtk_vscrollbar_calc_slider_size (GTK_VSCROLLBAR (widget));
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gtk_range_slider_update (GTK_RANGE (widget));
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widget->style = gtk_style_attach (widget->style, widget->window);
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gdk_window_set_user_data (range->trough, widget);
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gdk_window_set_user_data (range->slider, widget);
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gdk_window_set_user_data (range->step_forw, widget);
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gdk_window_set_user_data (range->step_back, widget);
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gtk_style_set_background (widget->style, range->trough, GTK_STATE_ACTIVE);
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gtk_style_set_background (widget->style, range->slider, GTK_STATE_NORMAL);
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gtk_style_set_background (widget->style, range->step_forw, GTK_STATE_ACTIVE);
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gtk_style_set_background (widget->style, range->step_back, GTK_STATE_ACTIVE);
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gdk_window_show (range->slider);
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gdk_window_show (range->step_forw);
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gdk_window_show (range->step_back);
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}
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static void
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gtk_vscrollbar_size_allocate (GtkWidget *widget,
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GtkAllocation *allocation)
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{
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GtkRange *range;
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g_return_if_fail (widget != NULL);
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g_return_if_fail (GTK_IS_VSCROLLBAR (widget));
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g_return_if_fail (allocation != NULL);
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widget->allocation = *allocation;
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if (GTK_WIDGET_REALIZED (widget))
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{
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range = GTK_RANGE (widget);
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gdk_window_move_resize (range->trough,
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allocation->x + (allocation->width - widget->requisition.width) / 2,
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allocation->y,
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widget->requisition.width, allocation->height);
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gdk_window_move_resize (range->step_back,
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widget->style->klass->xthickness,
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widget->style->klass->ythickness,
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widget->requisition.width - widget->style->klass->xthickness * 2,
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RANGE_CLASS (widget)->stepper_size);
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gdk_window_move_resize (range->step_forw,
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widget->style->klass->xthickness,
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allocation->height - widget->style->klass->ythickness -
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RANGE_CLASS (widget)->stepper_size,
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widget->requisition.width - widget->style->klass->xthickness * 2,
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RANGE_CLASS (widget)->stepper_size);
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gdk_window_resize (range->slider,
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widget->requisition.width - widget->style->klass->xthickness * 2,
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RANGE_CLASS (range)->min_slider_size);
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gtk_range_slider_update (GTK_RANGE (widget));
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}
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}
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static void
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gtk_vscrollbar_draw_step_forw (GtkRange *range)
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{
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GtkStateType state_type;
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GtkShadowType shadow_type;
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g_return_if_fail (range != NULL);
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g_return_if_fail (GTK_IS_VSCROLLBAR (range));
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if (GTK_WIDGET_DRAWABLE (range))
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{
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if (range->in_child == RANGE_CLASS (range)->step_forw)
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{
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if (range->click_child == RANGE_CLASS (range)->step_forw)
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state_type = GTK_STATE_ACTIVE;
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else
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state_type = GTK_STATE_PRELIGHT;
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}
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else
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state_type = GTK_STATE_NORMAL;
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if (range->click_child == RANGE_CLASS (range)->step_forw)
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shadow_type = GTK_SHADOW_IN;
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else
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shadow_type = GTK_SHADOW_OUT;
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gtk_draw_arrow (GTK_WIDGET (range)->style, range->step_forw,
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state_type, shadow_type, GTK_ARROW_DOWN,
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TRUE, 0, 0, -1, -1);
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}
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}
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static void
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gtk_vscrollbar_draw_step_back (GtkRange *range)
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{
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GtkStateType state_type;
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GtkShadowType shadow_type;
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g_return_if_fail (range != NULL);
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g_return_if_fail (GTK_IS_VSCROLLBAR (range));
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if (GTK_WIDGET_DRAWABLE (range))
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{
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if (range->in_child == RANGE_CLASS (range)->step_back)
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{
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if (range->click_child == RANGE_CLASS (range)->step_back)
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state_type = GTK_STATE_ACTIVE;
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else
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state_type = GTK_STATE_PRELIGHT;
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}
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else
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state_type = GTK_STATE_NORMAL;
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if (range->click_child == RANGE_CLASS (range)->step_back)
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shadow_type = GTK_SHADOW_IN;
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else
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shadow_type = GTK_SHADOW_OUT;
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gtk_draw_arrow (GTK_WIDGET (range)->style, range->step_back,
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state_type, shadow_type, GTK_ARROW_UP,
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TRUE, 0, 0, -1, -1);
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}
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}
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static void
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gtk_vscrollbar_slider_update (GtkRange *range)
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{
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g_return_if_fail (range != NULL);
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g_return_if_fail (GTK_IS_VSCROLLBAR (range));
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gtk_vscrollbar_calc_slider_size (GTK_VSCROLLBAR (range));
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gtk_range_default_vslider_update (range);
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}
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static void
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gtk_vscrollbar_calc_slider_size (GtkVScrollbar *vscrollbar)
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{
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GtkRange *range;
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gint step_back_y;
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gint step_back_height;
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gint step_forw_y;
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gint slider_width;
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gint slider_height;
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gint top, bottom;
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gint height;
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g_return_if_fail (vscrollbar != NULL);
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g_return_if_fail (GTK_IS_VSCROLLBAR (vscrollbar));
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if (GTK_WIDGET_REALIZED (vscrollbar))
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{
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range = GTK_RANGE (vscrollbar);
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gdk_window_get_size (range->step_back, NULL, &step_back_height);
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gdk_window_get_position (range->step_back, NULL, &step_back_y);
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gdk_window_get_position (range->step_forw, NULL, &step_forw_y);
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top = (step_back_y +
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step_back_height +
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RANGE_CLASS (vscrollbar)->stepper_slider_spacing);
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bottom = step_forw_y - RANGE_CLASS (vscrollbar)->stepper_slider_spacing;
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height = bottom - top;
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if ((range->adjustment->page_size > 0) &&
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(range->adjustment->lower != range->adjustment->upper))
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{
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if (range->adjustment->page_size >
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(range->adjustment->upper - range->adjustment->lower))
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range->adjustment->page_size = range->adjustment->upper - range->adjustment->lower;
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height = (height * range->adjustment->page_size /
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(range->adjustment->upper - range->adjustment->lower));
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if (height < RANGE_CLASS (vscrollbar)->min_slider_size)
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height = RANGE_CLASS (vscrollbar)->min_slider_size;
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}
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gdk_window_get_size (range->slider, &slider_width, &slider_height);
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if (slider_height != height)
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gdk_window_resize (range->slider, slider_width, height);
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}
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}
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static gint
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gtk_vscrollbar_trough_keys(GtkRange *range,
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GdkEventKey *key,
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GtkScrollType *scroll,
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GtkTroughType *pos)
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{
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gint return_val = FALSE;
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switch (key->keyval)
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{
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case GDK_Up:
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return_val = TRUE;
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*scroll = GTK_SCROLL_STEP_BACKWARD;
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break;
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case GDK_Down:
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return_val = TRUE;
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*scroll = GTK_SCROLL_STEP_FORWARD;
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break;
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case GDK_Page_Up:
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return_val = TRUE;
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if (key->state & GDK_CONTROL_MASK)
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*pos = GTK_TROUGH_START;
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else
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*scroll = GTK_SCROLL_PAGE_BACKWARD;
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break;
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case GDK_Page_Down:
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return_val = TRUE;
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if (key->state & GDK_CONTROL_MASK)
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*pos = GTK_TROUGH_END;
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else
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*scroll = GTK_SCROLL_PAGE_FORWARD;
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break;
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}
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return return_val;
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}
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