diff options
Diffstat (limited to 'gtk/gtkprogressbar.c')
| -rw-r--r-- | gtk/gtkprogressbar.c | 259 |
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); + } + } +} |