gtk2/gtk/gtkprogressbar.c
Owen Taylor 11d37c5067 gtkbutton.c gtkclist.c gtkdrawingarea.c gtkentry.c gtkeventbox.c
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.)
1998-01-18 15:09:10 +00:00

261 lines
7.3 KiB
C

/* 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 "gtkprogressbar.h"
#define MIN_WIDTH 200
#define MIN_HEIGHT 20
static void gtk_progress_bar_class_init (GtkProgressBarClass *klass);
static void gtk_progress_bar_init (GtkProgressBar *pbar);
static void gtk_progress_bar_realize (GtkWidget *widget);
static void gtk_progress_bar_size_allocate (GtkWidget *widget,
GtkAllocation *allocation);
static gint gtk_progress_bar_expose (GtkWidget *widget,
GdkEventExpose *event);
static void gtk_progress_bar_make_pixmap (GtkProgressBar *pbar);
static void gtk_progress_bar_paint (GtkProgressBar *pbar);
guint
gtk_progress_bar_get_type ()
{
static guint progress_bar_type = 0;
if (!progress_bar_type)
{
GtkTypeInfo progress_bar_info =
{
"GtkProgressBar",
sizeof (GtkProgressBar),
sizeof (GtkProgressBarClass),
(GtkClassInitFunc) gtk_progress_bar_class_init,
(GtkObjectInitFunc) gtk_progress_bar_init,
(GtkArgSetFunc) NULL,
(GtkArgGetFunc) NULL,
};
progress_bar_type = gtk_type_unique (gtk_widget_get_type (), &progress_bar_info);
}
return progress_bar_type;
}
static void
gtk_progress_bar_class_init (GtkProgressBarClass *class)
{
GtkWidgetClass *widget_class;
widget_class = (GtkWidgetClass*) class;
widget_class->realize = gtk_progress_bar_realize;
widget_class->size_allocate = gtk_progress_bar_size_allocate;
widget_class->expose_event = gtk_progress_bar_expose;
}
static void
gtk_progress_bar_init (GtkProgressBar *pbar)
{
GTK_WIDGET_SET_FLAGS (pbar, GTK_BASIC);
GTK_WIDGET (pbar)->requisition.width = MIN_WIDTH;
GTK_WIDGET (pbar)->requisition.height = MIN_HEIGHT;
pbar->offscreen_pixmap = NULL;
pbar->percentage = 0;
}
GtkWidget*
gtk_progress_bar_new ()
{
return GTK_WIDGET (gtk_type_new (gtk_progress_bar_get_type ()));
}
void
gtk_progress_bar_update (GtkProgressBar *pbar,
gfloat percentage)
{
g_return_if_fail (pbar != NULL);
g_return_if_fail (GTK_IS_PROGRESS_BAR (pbar));
if (percentage < 0.0)
percentage = 0.0;
else if (percentage > 1.0)
percentage = 1.0;
if (pbar->percentage != percentage)
{
pbar->percentage = percentage;
gtk_progress_bar_paint (pbar);
gtk_widget_queue_draw (GTK_WIDGET (pbar));
}
}
static void
gtk_progress_bar_realize (GtkWidget *widget)
{
GtkProgressBar *pbar;
GdkWindowAttr attributes;
gint attributes_mask;
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_PROGRESS_BAR (widget));
pbar = GTK_PROGRESS_BAR (widget);
GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
attributes.window_type = GDK_WINDOW_CHILD;
attributes.x = widget->allocation.x;
attributes.y = widget->allocation.y;
attributes.width = widget->allocation.width;
attributes.height = widget->allocation.height;
attributes.wclass = GDK_INPUT_OUTPUT;
attributes.visual = gtk_widget_get_visual (widget);
attributes.colormap = gtk_widget_get_colormap (widget);
attributes.event_mask = gtk_widget_get_events (widget);
attributes.event_mask |= GDK_EXPOSURE_MASK;
attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
widget->window = gdk_window_new (gtk_widget_get_parent_window (widget), &attributes, attributes_mask);
gdk_window_set_user_data (widget->window, pbar);
widget->style = gtk_style_attach (widget->style, widget->window);
gtk_style_set_background (widget->style, widget->window, GTK_STATE_ACTIVE);
gtk_progress_bar_make_pixmap (pbar);
}
static void
gtk_progress_bar_size_allocate (GtkWidget *widget,
GtkAllocation *allocation)
{
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_PROGRESS_BAR (widget));
g_return_if_fail (allocation != NULL);
widget->allocation = *allocation;
if (GTK_WIDGET_REALIZED (widget))
{
gdk_window_move_resize (widget->window,
allocation->x, allocation->y,
allocation->width, allocation->height);
gtk_progress_bar_make_pixmap (GTK_PROGRESS_BAR (widget));
}
}
static gint
gtk_progress_bar_expose (GtkWidget *widget,
GdkEventExpose *event)
{
GtkProgressBar *pbar;
g_return_val_if_fail (widget != NULL, FALSE);
g_return_val_if_fail (GTK_IS_PROGRESS_BAR (widget), FALSE);
g_return_val_if_fail (event != NULL, FALSE);
if (GTK_WIDGET_DRAWABLE (widget))
{
pbar = GTK_PROGRESS_BAR (widget);
gdk_draw_pixmap (widget->window,
widget->style->black_gc,
pbar->offscreen_pixmap,
0, 0, 0, 0,
widget->allocation.width,
widget->allocation.height);
}
return FALSE;
}
static void
gtk_progress_bar_make_pixmap (GtkProgressBar *pbar)
{
GtkWidget *widget;
g_return_if_fail (pbar != NULL);
g_return_if_fail (GTK_IS_PROGRESS_BAR (pbar));
if (GTK_WIDGET_REALIZED (pbar))
{
widget = GTK_WIDGET (pbar);
if (pbar->offscreen_pixmap)
gdk_pixmap_unref (pbar->offscreen_pixmap);
pbar->offscreen_pixmap = gdk_pixmap_new (widget->window,
widget->allocation.width,
widget->allocation.height,
-1);
gtk_progress_bar_paint (pbar);
}
}
static void
gtk_progress_bar_paint (GtkProgressBar *pbar)
{
GtkWidget *widget;
int amount;
g_return_if_fail (pbar != NULL);
g_return_if_fail (GTK_IS_PROGRESS_BAR (pbar));
if (pbar->offscreen_pixmap)
{
widget = GTK_WIDGET (pbar);
gtk_draw_shadow (widget->style,
pbar->offscreen_pixmap,
GTK_STATE_NORMAL, GTK_SHADOW_IN, 0, 0,
widget->allocation.width,
widget->allocation.height);
gdk_draw_rectangle (pbar->offscreen_pixmap,
widget->style->bg_gc[GTK_STATE_ACTIVE], TRUE,
widget->style->klass->xthickness,
widget->style->klass->ythickness,
widget->allocation.width - widget->style->klass->xthickness * 2,
widget->allocation.height - widget->style->klass->ythickness * 2);
amount = pbar->percentage * (widget->allocation.width - widget->style->klass->xthickness * 2);
if (amount > 0)
{
gdk_draw_rectangle (pbar->offscreen_pixmap,
widget->style->bg_gc[GTK_STATE_PRELIGHT], TRUE,
widget->style->klass->xthickness,
widget->style->klass->ythickness,
amount,
widget->allocation.height - widget->style->klass->ythickness * 2);
gtk_draw_shadow (widget->style,
pbar->offscreen_pixmap,
GTK_STATE_PRELIGHT, GTK_SHADOW_OUT,
widget->style->klass->xthickness,
widget->style->klass->ythickness,
amount,
widget->allocation.height - widget->style->klass->ythickness * 2);
}
}
}