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authorElliot Lee <sopwith@src.gnome.org>1997-11-24 22:37:52 +0000
committerElliot Lee <sopwith@src.gnome.org>1997-11-24 22:37:52 +0000
commit9508b76bd2401b6b9e289b5c8ec9fc0e08909283 (patch)
tree53c88a9e5ac09e1a027e56df33bdaa66d670901b /gtk/gtkprogressbar.c
downloadgdk-pixbuf-9508b76bd2401b6b9e289b5c8ec9fc0e08909283.tar.gz
Initial revision
Diffstat (limited to 'gtk/gtkprogressbar.c')
-rw-r--r--gtk/gtkprogressbar.c259
1 files changed, 259 insertions, 0 deletions
diff --git a/gtk/gtkprogressbar.c b/gtk/gtkprogressbar.c
new file mode 100644
index 000000000..8db560ba0
--- /dev/null
+++ b/gtk/gtkprogressbar.c
@@ -0,0 +1,259 @@
+/* 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,
+ (GtkArgFunc) 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 (widget->parent->window, &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_destroy (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);
+ }
+ }
+}