Introduced generic GtkProgress widget. Derived GtkProgressBar from
Sun Jul 19 12:19:16 1998 Stefan Jeske <stefan@gtk.org> * gtk/gtkprogress.c gtk/gtkprogress.h gtk/gtkprogressbar.c gtk/gtkprogressbar.h gtk/Makefile.am gtk/gtk.h gtk/testgtk.c: Introduced generic GtkProgress widget. Derived GtkProgressBar from GtkProgress. Made GtkProgressBar much more flexible (see testgtk).
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Stefan Jeske
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Stefan Jeske
Stefan Jeske
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540
gtk/gtkprogress.c
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540
gtk/gtkprogress.c
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@ -0,0 +1,540 @@
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/* 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
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#include <stdio.h>
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#include <math.h>
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#include <string.h>
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#include "gtkprogress.h"
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#include "gtksignal.h"
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#define EPSILON 1e-5
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static void gtk_progress_class_init (GtkProgressClass *klass);
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static void gtk_progress_init (GtkProgress *progress);
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static void gtk_progress_finalize (GtkObject *object);
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static void gtk_progress_realize (GtkWidget *widget);
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static gint gtk_progress_expose (GtkWidget *widget,
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GdkEventExpose *event);
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static void gtk_progress_size_allocate (GtkWidget *widget,
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GtkAllocation *allocation);
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static void gtk_progress_create_pixmap (GtkProgress *progress);
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static GtkWidgetClass *parent_class = NULL;
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guint
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gtk_progress_get_type (void)
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{
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static guint progress_type = 0;
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if (!progress_type)
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{
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GtkTypeInfo progress_info =
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{
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"GtkProgress",
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sizeof (GtkProgress),
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sizeof (GtkProgressClass),
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(GtkClassInitFunc) gtk_progress_class_init,
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(GtkObjectInitFunc) gtk_progress_init,
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/* reserved_1 */ NULL,
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/* reserved_2 */ NULL,
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(GtkClassInitFunc) NULL
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};
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progress_type = gtk_type_unique (gtk_widget_get_type (), &progress_info);
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}
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return progress_type;
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}
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static void
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gtk_progress_class_init (GtkProgressClass *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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object_class->finalize = gtk_progress_finalize;
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widget_class->realize = gtk_progress_realize;
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widget_class->expose_event = gtk_progress_expose;
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widget_class->size_allocate = gtk_progress_size_allocate;
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/* to be overridden */
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class->paint = NULL;
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class->update = NULL;
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class->act_mode_enter = NULL;
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}
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static void
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gtk_progress_init (GtkProgress *progress)
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{
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GTK_WIDGET_SET_FLAGS (progress, GTK_BASIC);
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progress->offscreen_pixmap = NULL;
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progress->format = g_strdup ("%P %%");
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progress->x_align = 0.5;
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progress->y_align = 0.5;
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progress->show_text = FALSE;
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progress->activity_mode = FALSE;
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}
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static void
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gtk_progress_realize (GtkWidget *widget)
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{
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GtkProgress *progress;
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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_PROGRESS (widget));
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progress = GTK_PROGRESS (widget);
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GTK_WIDGET_SET_FLAGS (widget, 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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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),
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&attributes, attributes_mask);
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gdk_window_set_user_data (widget->window, progress);
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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_progress_create_pixmap (progress);
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}
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static void
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gtk_progress_finalize (GtkObject *object)
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{
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GtkProgress *progress;
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g_return_if_fail (object != NULL);
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g_return_if_fail (GTK_IS_PROGRESS (object));
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progress = GTK_PROGRESS (object);
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if (progress->offscreen_pixmap)
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gdk_pixmap_unref (progress->offscreen_pixmap);
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if (progress->format)
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g_free (progress->format);
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GTK_OBJECT_CLASS (parent_class)->finalize (object);
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}
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static gint
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gtk_progress_expose (GtkWidget *widget,
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GdkEventExpose *event)
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{
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g_return_val_if_fail (widget != NULL, FALSE);
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g_return_val_if_fail (GTK_IS_PROGRESS (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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gdk_draw_pixmap (widget->window,
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widget->style->black_gc,
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GTK_PROGRESS (widget)->offscreen_pixmap,
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event->area.x, event->area.y,
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event->area.x, event->area.y,
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event->area.width,
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event->area.height);
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return FALSE;
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}
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static void
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gtk_progress_size_allocate (GtkWidget *widget,
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GtkAllocation *allocation)
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{
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g_return_if_fail (widget != NULL);
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g_return_if_fail (GTK_IS_PROGRESS (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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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_progress_create_pixmap (GTK_PROGRESS (widget));
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}
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}
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static void
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gtk_progress_create_pixmap (GtkProgress *progress)
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{
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GtkWidget *widget;
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g_return_if_fail (progress != NULL);
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g_return_if_fail (GTK_IS_PROGRESS (progress));
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if (GTK_WIDGET_REALIZED (progress))
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{
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widget = GTK_WIDGET (progress);
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if (progress->offscreen_pixmap)
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gdk_pixmap_unref (progress->offscreen_pixmap);
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progress->offscreen_pixmap = 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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GTK_PROGRESS_CLASS (GTK_OBJECT (progress)->klass)->paint (progress);
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}
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}
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static void
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gtk_progress_value_changed (GtkAdjustment *adjustment,
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GtkProgress *progress)
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{
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GTK_PROGRESS_CLASS (GTK_OBJECT (progress)->klass)->update (progress);
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}
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static gchar *
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gtk_progress_build_string (GtkProgress *progress,
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gfloat value,
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gfloat percentage)
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{
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gchar buf[256] = { 0 };
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gchar tmp[256] = { 0 };
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gchar *src;
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gchar *dest;
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gchar fmt[10];
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src = progress->format;
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dest = buf;
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while (src && *src)
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{
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if (*src != '%')
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{
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*dest = *src;
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dest++;
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}
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else
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{
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gchar c;
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gint digits;
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c = *(src + sizeof(gchar));
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digits = 0;
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if (c >= '0' && c <= '2')
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{
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digits = (gint) (c - '0');
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src++;
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c = *(src + sizeof(gchar));
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}
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switch (c)
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{
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case '%':
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*dest = '%';
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src++;
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dest++;
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break;
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case 'p':
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case 'P':
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if (digits)
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{
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sprintf (fmt, "%%.%df", digits);
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sprintf (tmp, fmt, 100 * percentage);
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}
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else
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sprintf (tmp, "%.0f", 100 * percentage);
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strcat (buf, tmp);
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dest = &(buf[strlen (buf)]);
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src++;
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break;
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case 'v':
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case 'V':
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if (digits)
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{
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sprintf (fmt, "%%.%df", digits);
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sprintf (tmp, fmt, value);
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}
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else
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sprintf (tmp, "%.0f", value);
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strcat (buf, tmp);
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dest = &(buf[strlen (buf)]);
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src++;
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break;
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case 'l':
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case 'L':
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if (digits)
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{
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sprintf (fmt, "%%.%df", digits);
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sprintf (tmp, fmt, progress->adjustment->lower);
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}
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else
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sprintf (tmp, "%.0f", progress->adjustment->lower);
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strcat (buf, tmp);
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dest = &(buf[strlen (buf)]);
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src++;
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break;
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case 'u':
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case 'U':
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if (digits)
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{
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sprintf (fmt, "%%.%df", digits);
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sprintf (tmp, fmt, progress->adjustment->upper);
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}
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else
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sprintf (tmp, "%.0f", progress->adjustment->upper);
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strcat (buf, tmp);
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dest = &(buf[strlen (buf)]);
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src++;
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break;
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default:
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break;
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}
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}
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src++;
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}
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return g_strdup (buf);
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}
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/***************************************************************/
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void
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gtk_progress_set_adjustment (GtkProgress *progress,
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GtkAdjustment *adjustment)
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{
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g_return_if_fail (progress != NULL);
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g_return_if_fail (GTK_IS_PROGRESS (progress));
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if (progress->adjustment != adjustment)
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{
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if (progress->adjustment)
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{
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gtk_signal_disconnect_by_data (GTK_OBJECT (progress->adjustment),
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(gpointer) progress);
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gtk_object_unref (GTK_OBJECT (progress->adjustment));
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}
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progress->adjustment = adjustment;
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if (adjustment)
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{
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gtk_object_ref (GTK_OBJECT (adjustment));
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gtk_object_sink (GTK_OBJECT (adjustment));
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gtk_signal_connect (GTK_OBJECT (adjustment), "value_changed",
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(GtkSignalFunc) gtk_progress_value_changed,
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(gpointer) progress);
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}
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}
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}
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void
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gtk_progress_reconfigure (GtkProgress *progress,
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gfloat value,
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gfloat min,
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gfloat max)
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{
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GtkAdjustment *adj;
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gboolean changed = FALSE;
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g_return_if_fail (progress != NULL);
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g_return_if_fail (GTK_IS_PROGRESS (progress));
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g_return_if_fail (min <= max);
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g_return_if_fail (value >= min && value <= max);
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adj = progress->adjustment;
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if (fabs (adj->lower - min) > EPSILON || fabs (adj->upper - max) > EPSILON)
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changed = TRUE;
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adj->value = value;
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adj->lower = min;
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adj->upper = max;
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gtk_signal_emit_by_name (GTK_OBJECT (adj), "value_changed");
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if (changed)
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gtk_signal_emit_by_name (GTK_OBJECT (progress->adjustment), "changed");
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}
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void
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gtk_progress_set_percentage (GtkProgress *progress,
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gfloat percentage)
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{
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g_return_if_fail (progress != NULL);
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g_return_if_fail (GTK_IS_PROGRESS (progress));
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g_return_if_fail (percentage >= 0 && percentage <= 1.0);
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gtk_progress_set_value (progress, progress->adjustment->lower + percentage *
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(progress->adjustment->upper - progress->adjustment->lower));
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}
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gfloat
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gtk_progress_get_current_percentage (GtkProgress *progress)
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{
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g_return_val_if_fail (progress != NULL, 0);
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g_return_val_if_fail (GTK_IS_PROGRESS (progress), 0);
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return (progress->adjustment->value - progress->adjustment->lower) /
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(progress->adjustment->upper - progress->adjustment->lower);
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}
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gfloat
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gtk_progress_get_percentage_from_value (GtkProgress *progress,
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gfloat value)
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{
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g_return_val_if_fail (progress != NULL, 0);
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g_return_val_if_fail (GTK_IS_PROGRESS (progress), 0);
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if (value >= progress->adjustment->lower &&
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value <= progress->adjustment->upper)
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return (value - progress->adjustment->lower) /
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(progress->adjustment->upper - progress->adjustment->lower);
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else
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return 0.0;
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}
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void
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gtk_progress_set_value (GtkProgress *progress,
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gfloat value)
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{
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g_return_if_fail (progress != NULL);
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g_return_if_fail (GTK_IS_PROGRESS (progress));
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if (fabs (progress->adjustment->value - value) > EPSILON)
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gtk_adjustment_set_value (progress->adjustment, value);
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}
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gfloat
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gtk_progress_get_value (GtkProgress *progress)
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{
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g_return_val_if_fail (progress != NULL, 0);
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g_return_val_if_fail (GTK_IS_PROGRESS (progress), 0);
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return progress->adjustment->value;
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}
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void
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gtk_progress_set_show_text (GtkProgress *progress,
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gint show_text)
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{
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g_return_if_fail (progress != NULL);
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g_return_if_fail (GTK_IS_PROGRESS (progress));
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if (progress->show_text != show_text)
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{
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progress->show_text = show_text;
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if (GTK_WIDGET_DRAWABLE (GTK_WIDGET (progress)))
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gtk_widget_queue_resize (GTK_WIDGET (progress));
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}
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}
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void
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gtk_progress_set_text_alignment (GtkProgress *progress,
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gfloat x_align,
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gfloat y_align)
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{
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g_return_if_fail (progress != NULL);
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g_return_if_fail (GTK_IS_PROGRESS (progress));
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g_return_if_fail (x_align >= 0.0 && x_align <= 1.0);
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g_return_if_fail (y_align >= 0.0 && y_align <= 1.0);
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if (progress->x_align != x_align || progress->y_align != y_align)
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{
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progress->x_align = x_align;
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progress->y_align = y_align;
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if (GTK_WIDGET_DRAWABLE (GTK_WIDGET (progress)))
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gtk_widget_queue_resize (GTK_WIDGET (progress));
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}
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}
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void
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gtk_progress_set_format_string (GtkProgress *progress,
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gchar *format)
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{
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g_return_if_fail (progress != NULL);
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g_return_if_fail (GTK_IS_PROGRESS (progress));
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if (format)
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{
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if (progress->format)
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g_free (progress->format);
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progress->format = g_strdup (format);
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if (GTK_WIDGET_DRAWABLE (GTK_WIDGET (progress)))
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gtk_widget_queue_resize (GTK_WIDGET (progress));
|
||||
}
|
||||
}
|
||||
|
||||
gchar *
|
||||
gtk_progress_get_current_text (GtkProgress *progress)
|
||||
{
|
||||
g_return_val_if_fail (progress != NULL, 0);
|
||||
g_return_val_if_fail (GTK_IS_PROGRESS (progress), 0);
|
||||
|
||||
return gtk_progress_build_string (progress, progress->adjustment->value,
|
||||
gtk_progress_get_current_percentage (progress));
|
||||
}
|
||||
|
||||
gchar *
|
||||
gtk_progress_get_text_from_value (GtkProgress *progress,
|
||||
gfloat value)
|
||||
{
|
||||
g_return_val_if_fail (progress != NULL, 0);
|
||||
g_return_val_if_fail (GTK_IS_PROGRESS (progress), 0);
|
||||
|
||||
return gtk_progress_build_string (progress, value,
|
||||
gtk_progress_get_percentage_from_value (progress, value));
|
||||
}
|
||||
|
||||
void
|
||||
gtk_progress_set_activity_mode (GtkProgress *progress,
|
||||
guint activity_mode)
|
||||
{
|
||||
g_return_if_fail (progress != NULL);
|
||||
g_return_if_fail (GTK_IS_PROGRESS (progress));
|
||||
|
||||
if (progress->activity_mode != (activity_mode != 0))
|
||||
{
|
||||
progress->activity_mode = (activity_mode != 0);
|
||||
|
||||
if (progress->activity_mode)
|
||||
GTK_PROGRESS_CLASS
|
||||
(GTK_OBJECT (progress)->klass)->act_mode_enter (progress);
|
||||
|
||||
if (GTK_WIDGET_DRAWABLE (GTK_WIDGET (progress)))
|
||||
gtk_widget_queue_resize (GTK_WIDGET (progress));
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user