Initial revision

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);
+	}
+    }
+}