9dee8ee4e4
2018-02-11 Federico Mena Quintero <federico@nuclecu.unam.mx> * gtk/gtkclist.c: * gtk/gtkentry.c: * gtk/gtkfixed.c: * gtk/gtkhandlebox.c: * gtk/gtknotebook.c: * gtk/gtkpaned.c: * gtk/gtkpreview.c: * gtk/gtkrange.c: * gtk/gtkruler.c: * gtk/gtktext.c: * gtk/gtkviewport.c: Fixed unrealize handler to comply with the documentation (which mentions the right thing to do).
309 lines
8.0 KiB
C
309 lines
8.0 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 "gtkruler.h"
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static void gtk_ruler_class_init (GtkRulerClass *klass);
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static void gtk_ruler_init (GtkRuler *ruler);
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static void gtk_ruler_realize (GtkWidget *widget);
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static void gtk_ruler_unrealize (GtkWidget *widget);
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static void gtk_ruler_size_allocate (GtkWidget *widget,
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GtkAllocation *allocation);
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static gint gtk_ruler_expose (GtkWidget *widget,
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GdkEventExpose *event);
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static void gtk_ruler_make_pixmap (GtkRuler *ruler);
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static GtkWidgetClass *parent_class;
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static GtkRulerMetric ruler_metrics[] =
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{
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{"Pixels", "Pi", 1.0, { 1, 2, 5, 10, 25, 50, 100, 250, 500, 1000 }, { 1, 5, 10, 50, 100 }},
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{"Inches", "In", 72.0, { 1, 2, 4, 8, 16, 32, 64, 128, 256, 512 }, { 1, 2, 4, 8, 16 }},
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{"Centimeters", "Cn", 28.35, { 1, 2, 5, 10, 25, 50, 100, 250, 500, 1000 }, { 1, 5, 10, 50, 100 }},
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};
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guint
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gtk_ruler_get_type ()
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{
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static guint ruler_type = 0;
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if (!ruler_type)
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{
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GtkTypeInfo ruler_info =
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{
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"GtkRuler",
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sizeof (GtkRuler),
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sizeof (GtkRulerClass),
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(GtkClassInitFunc) gtk_ruler_class_init,
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(GtkObjectInitFunc) gtk_ruler_init,
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(GtkArgSetFunc) NULL,
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(GtkArgGetFunc) NULL,
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};
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ruler_type = gtk_type_unique (gtk_widget_get_type (), &ruler_info);
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}
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return ruler_type;
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}
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static void
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gtk_ruler_class_init (GtkRulerClass *class)
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{
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GtkObjectClass *object_class;
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GtkWidgetClass *widget_class;
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object_class = (GtkObjectClass*) class;
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widget_class = (GtkWidgetClass*) class;
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parent_class = gtk_type_class (gtk_widget_get_type ());
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widget_class->realize = gtk_ruler_realize;
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widget_class->unrealize = gtk_ruler_unrealize;
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widget_class->size_allocate = gtk_ruler_size_allocate;
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widget_class->expose_event = gtk_ruler_expose;
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class->draw_ticks = NULL;
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class->draw_pos = NULL;
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}
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static void
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gtk_ruler_init (GtkRuler *ruler)
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{
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ruler->backing_store = NULL;
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ruler->non_gr_exp_gc = NULL;
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ruler->xsrc = 0;
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ruler->ysrc = 0;
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ruler->slider_size = 0;
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ruler->lower = 0;
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ruler->upper = 0;
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ruler->position = 0;
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ruler->max_size = 0;
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gtk_ruler_set_metric (ruler, GTK_PIXELS);
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}
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void
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gtk_ruler_set_metric (GtkRuler *ruler,
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GtkMetricType metric)
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{
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g_return_if_fail (ruler != NULL);
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g_return_if_fail (GTK_IS_RULER (ruler));
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ruler->metric = &ruler_metrics[metric];
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if (GTK_WIDGET_DRAWABLE (ruler))
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gtk_widget_queue_draw (GTK_WIDGET (ruler));
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}
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void
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gtk_ruler_set_range (GtkRuler *ruler,
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gfloat lower,
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gfloat upper,
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gfloat position,
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gfloat max_size)
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{
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g_return_if_fail (ruler != NULL);
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g_return_if_fail (GTK_IS_RULER (ruler));
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ruler->lower = lower;
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ruler->upper = upper;
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ruler->position = position;
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ruler->max_size = max_size;
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if (GTK_WIDGET_DRAWABLE (ruler))
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gtk_widget_queue_draw (GTK_WIDGET (ruler));
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}
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void
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gtk_ruler_draw_ticks (GtkRuler *ruler)
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{
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g_return_if_fail (ruler != NULL);
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g_return_if_fail (GTK_IS_RULER (ruler));
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if (GTK_RULER_CLASS (GTK_OBJECT (ruler)->klass)->draw_ticks)
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(* GTK_RULER_CLASS (GTK_OBJECT (ruler)->klass)->draw_ticks) (ruler);
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}
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void
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gtk_ruler_draw_pos (GtkRuler *ruler)
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{
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g_return_if_fail (ruler != NULL);
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g_return_if_fail (GTK_IS_RULER (ruler));
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if (GTK_RULER_CLASS (GTK_OBJECT (ruler)->klass)->draw_pos)
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(* GTK_RULER_CLASS (GTK_OBJECT (ruler)->klass)->draw_pos) (ruler);
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}
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static void
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gtk_ruler_realize (GtkWidget *widget)
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{
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GtkRuler *ruler;
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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_RULER (widget));
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ruler = GTK_RULER (widget);
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GTK_WIDGET_SET_FLAGS (ruler, GTK_REALIZED);
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attributes.window_type = GDK_WINDOW_CHILD;
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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.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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attributes.event_mask |= (GDK_EXPOSURE_MASK |
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GDK_POINTER_MOTION_MASK |
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GDK_POINTER_MOTION_HINT_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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gdk_window_set_user_data (widget->window, ruler);
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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_ACTIVE);
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gtk_ruler_make_pixmap (ruler);
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}
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static void
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gtk_ruler_unrealize (GtkWidget *widget)
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{
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GtkRuler *ruler;
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g_return_if_fail (widget != NULL);
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g_return_if_fail (GTK_IS_RULER (widget));
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ruler = GTK_RULER (widget);
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if (ruler->backing_store)
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gdk_pixmap_unref (ruler->backing_store);
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if (ruler->non_gr_exp_gc)
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gdk_gc_destroy (ruler->non_gr_exp_gc);
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ruler->backing_store = NULL;
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ruler->non_gr_exp_gc = NULL;
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if (GTK_WIDGET_CLASS (parent_class)->unrealize)
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(* GTK_WIDGET_CLASS (parent_class)->unrealize) (widget);
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}
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static void
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gtk_ruler_size_allocate (GtkWidget *widget,
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GtkAllocation *allocation)
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{
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GtkRuler *ruler;
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g_return_if_fail (widget != NULL);
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g_return_if_fail (GTK_IS_RULER (widget));
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ruler = GTK_RULER (widget);
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widget->allocation = *allocation;
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if (GTK_WIDGET_REALIZED (widget))
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{
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gdk_window_move_resize (widget->window,
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allocation->x, allocation->y,
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allocation->width, allocation->height);
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gtk_ruler_make_pixmap (ruler);
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}
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}
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static gint
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gtk_ruler_expose (GtkWidget *widget,
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GdkEventExpose *event)
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{
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GtkRuler *ruler;
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g_return_val_if_fail (widget != NULL, FALSE);
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g_return_val_if_fail (GTK_IS_RULER (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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ruler = GTK_RULER (widget);
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gdk_draw_rectangle (ruler->backing_store,
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widget->style->bg_gc[GTK_STATE_NORMAL],
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TRUE, 0, 0,
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widget->allocation.width,
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widget->allocation.height);
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gtk_ruler_draw_ticks (ruler);
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gtk_draw_shadow (widget->style, ruler->backing_store,
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GTK_STATE_NORMAL, GTK_SHADOW_OUT, 0, 0,
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widget->allocation.width,
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widget->allocation.height);
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gdk_draw_pixmap (widget->window,
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ruler->non_gr_exp_gc,
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ruler->backing_store,
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0, 0, 0, 0,
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widget->allocation.width,
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widget->allocation.height);
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gtk_ruler_draw_pos (ruler);
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}
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return FALSE;
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}
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static void
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gtk_ruler_make_pixmap (GtkRuler *ruler)
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{
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GtkWidget *widget;
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gint width;
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gint height;
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widget = GTK_WIDGET (ruler);
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if (ruler->backing_store)
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{
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gdk_window_get_size (ruler->backing_store, &width, &height);
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if ((width == widget->allocation.width) &&
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(height == widget->allocation.height))
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return;
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gdk_pixmap_unref (ruler->backing_store);
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}
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ruler->backing_store = gdk_pixmap_new (widget->window,
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widget->allocation.width,
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widget->allocation.height,
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-1);
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ruler->xsrc = 0;
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ruler->ysrc = 0;
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if (!ruler->non_gr_exp_gc)
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{
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ruler->non_gr_exp_gc = gdk_gc_new (widget->window);
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gdk_gc_set_exposures (ruler->non_gr_exp_gc, FALSE);
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}
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}
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