/* 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 Lesser 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 * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the * Free Software Foundation, Inc., 59 Temple Place - Suite 330, * Boston, MA 02111-1307, USA. */ /* * Modified by the GTK+ Team and others 1997-2000. See the AUTHORS * file for a list of people on the GTK+ Team. See the ChangeLog * files for a list of changes. These files are distributed with * GTK+ at ftp://ftp.gtk.org/pub/gtk/. */ #include "config.h" #include #include "gtkprogressbar.h" #include "gtkorientableprivate.h" #include "gtkprivate.h" #include "gtkintl.h" #include "a11y/gtkprogressbaraccessible.h" /** * SECTION:gtkprogressbar * @Short_description: A widget which indicates progress visually * @Title: GtkProgressBar * * The #GtkProgressBar is typically used to display the progress of a long * running operation. It provides a visual clue that processing * is underway. The #GtkProgressBar can be used in two different * modes: percentage mode and activity mode. * * When an application can determine how much work needs to take place * (e.g. read a fixed number of bytes from a file) and can monitor its * progress, it can use the #GtkProgressBar in percentage mode and the user * sees a growing bar indicating the percentage of the work that has * been completed. In this mode, the application is required to call * gtk_progress_bar_set_fraction() periodically to update the progress bar. * * When an application has no accurate way of knowing the amount of work * to do, it can use the #GtkProgressBar in activity mode, which shows * activity by a block moving back and forth within the progress area. In * this mode, the application is required to call gtk_progress_bar_pulse() * periodically to update the progress bar. * * There is quite a bit of flexibility provided to control the appearance * of the #GtkProgressBar. Functions are provided to control the * orientation of the bar, optional text can be displayed along with * the bar, and the step size used in activity mode can be set. */ #define MIN_HORIZONTAL_BAR_WIDTH 150 #define MIN_HORIZONTAL_BAR_HEIGHT 20 #define MIN_VERTICAL_BAR_WIDTH 22 #define MIN_VERTICAL_BAR_HEIGHT 80 struct _GtkProgressBarPrivate { gchar *text; gdouble fraction; gdouble pulse_fraction; gint activity_pos; guint activity_blocks; guint activity_step; GtkOrientation orientation; guint activity_dir : 1; guint activity_mode : 1; guint ellipsize : 3; guint show_text : 1; guint inverted : 1; }; enum { PROP_0, PROP_FRACTION, PROP_PULSE_STEP, PROP_ORIENTATION, PROP_INVERTED, PROP_TEXT, PROP_SHOW_TEXT, PROP_ELLIPSIZE }; static void gtk_progress_bar_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec); static void gtk_progress_bar_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec); static void gtk_progress_bar_get_preferred_width (GtkWidget *widget, gint *minimum, gint *natural); static void gtk_progress_bar_get_preferred_height (GtkWidget *widget, gint *minimum, gint *natural); static void gtk_progress_bar_real_update (GtkProgressBar *progress); static gboolean gtk_progress_bar_draw (GtkWidget *widget, cairo_t *cr); static void gtk_progress_bar_act_mode_enter (GtkProgressBar *progress); static void gtk_progress_bar_finalize (GObject *object); static void gtk_progress_bar_set_orientation (GtkProgressBar *progress, GtkOrientation orientation); G_DEFINE_TYPE_WITH_CODE (GtkProgressBar, gtk_progress_bar, GTK_TYPE_WIDGET, G_IMPLEMENT_INTERFACE (GTK_TYPE_ORIENTABLE, NULL)) static void gtk_progress_bar_class_init (GtkProgressBarClass *class) { GObjectClass *gobject_class; GtkWidgetClass *widget_class; gobject_class = G_OBJECT_CLASS (class); widget_class = (GtkWidgetClass *) class; gobject_class->set_property = gtk_progress_bar_set_property; gobject_class->get_property = gtk_progress_bar_get_property; gobject_class->finalize = gtk_progress_bar_finalize; widget_class->draw = gtk_progress_bar_draw; widget_class->get_preferred_width = gtk_progress_bar_get_preferred_width; widget_class->get_preferred_height = gtk_progress_bar_get_preferred_height; g_object_class_override_property (gobject_class, PROP_ORIENTATION, "orientation"); g_object_class_install_property (gobject_class, PROP_INVERTED, g_param_spec_boolean ("inverted", P_("Inverted"), P_("Invert the direction in which the progress bar grows"), FALSE, GTK_PARAM_READWRITE)); g_object_class_install_property (gobject_class, PROP_FRACTION, g_param_spec_double ("fraction", P_("Fraction"), P_("The fraction of total work that has been completed"), 0.0, 1.0, 0.0, GTK_PARAM_READWRITE)); g_object_class_install_property (gobject_class, PROP_PULSE_STEP, g_param_spec_double ("pulse-step", P_("Pulse Step"), P_("The fraction of total progress to move the bouncing block when pulsed"), 0.0, 1.0, 0.1, GTK_PARAM_READWRITE)); g_object_class_install_property (gobject_class, PROP_TEXT, g_param_spec_string ("text", P_("Text"), P_("Text to be displayed in the progress bar"), NULL, GTK_PARAM_READWRITE)); /** * GtkProgressBar:show_text: * * Sets whether the progressbar will show text superimposed * over the bar. The shown text is either the value of * the #GtkProgressBar::text property or, if that is %NULL, * the #GtkProgressBar::fraction value, as a percentage. * * To make a progress bar that is styled and sized suitably for containing * text (even if the actual text is blank), set #GtkProgressBar:show-text to * %TRUE and #GtkProgressBar:text to the empty string (not %NULL). * * Since: 3.0 */ g_object_class_install_property (gobject_class, PROP_SHOW_TEXT, g_param_spec_boolean ("show-text", P_("Show text"), P_("Whether the progress is shown as text."), FALSE, GTK_PARAM_READWRITE)); /** * GtkProgressBar:ellipsize: * * The preferred place to ellipsize the string, if the progressbar does * not have enough room to display the entire string, specified as a * #PangoEllisizeMode. * * Note that setting this property to a value other than * %PANGO_ELLIPSIZE_NONE has the side-effect that the progressbar requests * only enough space to display the ellipsis "...". Another means to set a * progressbar's width is gtk_widget_set_size_request(). * * Since: 2.6 */ g_object_class_install_property (gobject_class, PROP_ELLIPSIZE, g_param_spec_enum ("ellipsize", P_("Ellipsize"), P_("The preferred place to ellipsize the string, if the progress bar " "does not have enough room to display the entire string, if at all."), PANGO_TYPE_ELLIPSIZE_MODE, PANGO_ELLIPSIZE_NONE, GTK_PARAM_READWRITE)); gtk_widget_class_install_style_property (widget_class, g_param_spec_int ("xspacing", P_("X spacing"), P_("Extra spacing applied to the width of a progress bar."), 0, G_MAXINT, 7, G_PARAM_READWRITE)); gtk_widget_class_install_style_property (widget_class, g_param_spec_int ("yspacing", P_("Y spacing"), P_("Extra spacing applied to the height of a progress bar."), 0, G_MAXINT, 7, G_PARAM_READWRITE)); /** * GtkProgressBar:min-horizontal-bar-width: * * The minimum horizontal width of the progress bar. * * Since: 2.14 */ gtk_widget_class_install_style_property (widget_class, g_param_spec_int ("min-horizontal-bar-width", P_("Minimum horizontal bar width"), P_("The minimum horizontal width of the progress bar"), 1, G_MAXINT, MIN_HORIZONTAL_BAR_WIDTH, G_PARAM_READWRITE)); /** * GtkProgressBar:min-horizontal-bar-height: * * Minimum horizontal height of the progress bar. * * Since: 2.14 */ gtk_widget_class_install_style_property (widget_class, g_param_spec_int ("min-horizontal-bar-height", P_("Minimum horizontal bar height"), P_("Minimum horizontal height of the progress bar"), 1, G_MAXINT, MIN_HORIZONTAL_BAR_HEIGHT, G_PARAM_READWRITE)); /** * GtkProgressBar:min-vertical-bar-width: * * The minimum vertical width of the progress bar. * * Since: 2.14 */ gtk_widget_class_install_style_property (widget_class, g_param_spec_int ("min-vertical-bar-width", P_("Minimum vertical bar width"), P_("The minimum vertical width of the progress bar"), 1, G_MAXINT, MIN_VERTICAL_BAR_WIDTH, G_PARAM_READWRITE)); /** * GtkProgressBar:min-vertical-bar-height: * * The minimum vertical height of the progress bar. * * Since: 2.14 */ gtk_widget_class_install_style_property (widget_class, g_param_spec_int ("min-vertical-bar-height", P_("Minimum vertical bar height"), P_("The minimum vertical height of the progress bar"), 1, G_MAXINT, MIN_VERTICAL_BAR_HEIGHT, G_PARAM_READWRITE)); g_type_class_add_private (class, sizeof (GtkProgressBarPrivate)); gtk_widget_class_set_accessible_type (widget_class, GTK_TYPE_PROGRESS_BAR_ACCESSIBLE); } static void gtk_progress_bar_init (GtkProgressBar *pbar) { GtkProgressBarPrivate *priv; pbar->priv = G_TYPE_INSTANCE_GET_PRIVATE (pbar, GTK_TYPE_PROGRESS_BAR, GtkProgressBarPrivate); priv = pbar->priv; priv->orientation = GTK_ORIENTATION_HORIZONTAL; priv->inverted = FALSE; priv->pulse_fraction = 0.1; priv->activity_pos = 0; priv->activity_dir = 1; priv->activity_step = 3; priv->activity_blocks = 5; priv->ellipsize = PANGO_ELLIPSIZE_NONE; priv->show_text = FALSE; priv->text = NULL; priv->fraction = 0.0; gtk_widget_set_has_window (GTK_WIDGET (pbar), FALSE); } static void gtk_progress_bar_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec) { GtkProgressBar *pbar; pbar = GTK_PROGRESS_BAR (object); switch (prop_id) { case PROP_ORIENTATION: gtk_progress_bar_set_orientation (pbar, g_value_get_enum (value)); break; case PROP_INVERTED: gtk_progress_bar_set_inverted (pbar, g_value_get_boolean (value)); break; case PROP_FRACTION: gtk_progress_bar_set_fraction (pbar, g_value_get_double (value)); break; case PROP_PULSE_STEP: gtk_progress_bar_set_pulse_step (pbar, g_value_get_double (value)); break; case PROP_TEXT: gtk_progress_bar_set_text (pbar, g_value_get_string (value)); break; case PROP_SHOW_TEXT: gtk_progress_bar_set_show_text (pbar, g_value_get_boolean (value)); break; case PROP_ELLIPSIZE: gtk_progress_bar_set_ellipsize (pbar, g_value_get_enum (value)); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } static void gtk_progress_bar_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec) { GtkProgressBar *pbar = GTK_PROGRESS_BAR (object); GtkProgressBarPrivate* priv = pbar->priv; switch (prop_id) { case PROP_ORIENTATION: g_value_set_enum (value, priv->orientation); break; case PROP_INVERTED: g_value_set_boolean (value, priv->inverted); break; case PROP_FRACTION: g_value_set_double (value, priv->fraction); break; case PROP_PULSE_STEP: g_value_set_double (value, priv->pulse_fraction); break; case PROP_TEXT: g_value_set_string (value, priv->text); break; case PROP_SHOW_TEXT: g_value_set_boolean (value, priv->show_text); break; case PROP_ELLIPSIZE: g_value_set_enum (value, priv->ellipsize); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } /** * gtk_progress_bar_new: * * Creates a new #GtkProgressBar. * * Returns: a #GtkProgressBar. */ GtkWidget* gtk_progress_bar_new (void) { GtkWidget *pbar; pbar = g_object_new (GTK_TYPE_PROGRESS_BAR, NULL); return pbar; } static void gtk_progress_bar_real_update (GtkProgressBar *pbar) { GtkProgressBarPrivate *priv; GtkWidget *widget; g_return_if_fail (GTK_IS_PROGRESS_BAR (pbar)); priv = pbar->priv; widget = GTK_WIDGET (pbar); if (priv->activity_mode) { GtkAllocation allocation; GtkStyleContext *context; GtkStateFlags state; GtkBorder padding; gint size; gtk_widget_get_allocation (widget, &allocation); context = gtk_widget_get_style_context (widget); state = gtk_widget_get_state_flags (widget); gtk_style_context_get_padding (context, state, &padding); /* advance the block */ if (priv->orientation == GTK_ORIENTATION_HORIZONTAL) { /* Update our activity step. */ priv->activity_step = allocation.width * priv->pulse_fraction; size = MAX (2, allocation.width / priv->activity_blocks); if (priv->activity_dir == 0) { priv->activity_pos += priv->activity_step; if (priv->activity_pos + size >= allocation.width - padding.left) { priv->activity_pos = allocation.width - padding.left - size; priv->activity_dir = 1; } } else { priv->activity_pos -= priv->activity_step; if (priv->activity_pos <= padding.left) { priv->activity_pos = padding.left; priv->activity_dir = 0; } } } else { /* Update our activity step. */ priv->activity_step = allocation.height * priv->pulse_fraction; size = MAX (2, allocation.height / priv->activity_blocks); if (priv->activity_dir == 0) { priv->activity_pos += priv->activity_step; if (priv->activity_pos + size >= allocation.height - padding.top) { priv->activity_pos = allocation.height - padding.top - size; priv->activity_dir = 1; } } else { priv->activity_pos -= priv->activity_step; if (priv->activity_pos <= padding.top) { priv->activity_pos = padding.top; priv->activity_dir = 0; } } } } gtk_widget_queue_draw (widget); } static void gtk_progress_bar_finalize (GObject *object) { GtkProgressBar *pbar = GTK_PROGRESS_BAR (object); GtkProgressBarPrivate *priv = pbar->priv; g_free (priv->text); G_OBJECT_CLASS (gtk_progress_bar_parent_class)->finalize (object); } static gchar * get_current_text (GtkProgressBar *pbar) { GtkProgressBarPrivate *priv = pbar->priv; if (priv->text) return g_strdup (priv->text); else return g_strdup_printf ("%.0f %%", priv->fraction * 100.0); } static void gtk_progress_bar_get_preferred_width (GtkWidget *widget, gint *minimum, gint *natural) { GtkProgressBar *pbar; GtkProgressBarPrivate *priv; GtkStyleContext *style_context; GtkStateFlags state; GtkBorder padding; gchar *buf; PangoRectangle logical_rect; PangoLayout *layout; gint width; gint xspacing; gint min_width; g_return_if_fail (GTK_IS_PROGRESS_BAR (widget)); style_context = gtk_widget_get_style_context (widget); state = gtk_widget_get_state_flags (widget); gtk_style_context_get_padding (style_context, state, &padding); gtk_widget_style_get (widget, "xspacing", &xspacing, NULL); pbar = GTK_PROGRESS_BAR (widget); priv = pbar->priv; width = padding.left + padding.right + xspacing; if (priv->show_text) { buf = get_current_text (pbar); layout = gtk_widget_create_pango_layout (widget, buf); pango_layout_get_pixel_extents (layout, NULL, &logical_rect); if (priv->ellipsize) { const PangoFontDescription *font_desc; PangoContext *context; PangoFontMetrics *metrics; gint char_width; /* The minimum size for ellipsized text is ~ 3 chars */ context = pango_layout_get_context (layout); font_desc = gtk_style_context_get_font (style_context, state); metrics = pango_context_get_metrics (context, font_desc, pango_context_get_language (context)); char_width = pango_font_metrics_get_approximate_char_width (metrics); pango_font_metrics_unref (metrics); width += PANGO_PIXELS (char_width) * 3; } else width += logical_rect.width; g_object_unref (layout); g_free (buf); } if (priv->orientation == GTK_ORIENTATION_HORIZONTAL) gtk_widget_style_get (widget, "min-horizontal-bar-width", &min_width, NULL); else gtk_widget_style_get (widget, "min-vertical-bar-width", &min_width, NULL); *minimum = *natural = MAX (min_width, width); } static void gtk_progress_bar_get_preferred_height (GtkWidget *widget, gint *minimum, gint *natural) { GtkProgressBar *pbar; GtkProgressBarPrivate *priv; GtkStyleContext *context; GtkStateFlags state; GtkBorder padding; gchar *buf; PangoRectangle logical_rect; PangoLayout *layout; gint height; gint yspacing; gint min_height; g_return_if_fail (GTK_IS_PROGRESS_BAR (widget)); context = gtk_widget_get_style_context (widget); state = gtk_widget_get_state_flags (widget); gtk_style_context_get_padding (context, state, &padding); gtk_widget_style_get (widget, "yspacing", &yspacing, NULL); pbar = GTK_PROGRESS_BAR (widget); priv = pbar->priv; height = padding.top + padding.bottom + yspacing; if (priv->show_text) { buf = get_current_text (pbar); layout = gtk_widget_create_pango_layout (widget, buf); pango_layout_get_pixel_extents (layout, NULL, &logical_rect); height += logical_rect.height; g_object_unref (layout); g_free (buf); } if (priv->orientation == GTK_ORIENTATION_HORIZONTAL) gtk_widget_style_get (widget, "min-horizontal-bar-height", &min_height, NULL); else gtk_widget_style_get (widget, "min-vertical-bar-height", &min_height, NULL); *minimum = *natural = MAX (min_height, height); } static void gtk_progress_bar_act_mode_enter (GtkProgressBar *pbar) { GtkProgressBarPrivate *priv = pbar->priv; GtkAllocation allocation; GtkStyleContext *context; GtkStateFlags state; GtkBorder padding; GtkWidget *widget = GTK_WIDGET (pbar); GtkOrientation orientation; gboolean inverted; context = gtk_widget_get_style_context (widget); state = gtk_widget_get_state_flags (widget); gtk_style_context_get_padding (context, state, &padding); orientation = priv->orientation; inverted = priv->inverted; if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL) { if (priv->orientation == GTK_ORIENTATION_HORIZONTAL) inverted = !inverted; } /* calculate start pos */ if (orientation == GTK_ORIENTATION_HORIZONTAL) { if (!inverted) { priv->activity_pos = padding.left; priv->activity_dir = 0; } else { gtk_widget_get_allocation (widget, &allocation); priv->activity_pos = allocation.width - padding.left - (allocation.height - padding.top - padding.bottom); priv->activity_dir = 1; } } else { if (!inverted) { priv->activity_pos = padding.top; priv->activity_dir = 0; } else { gtk_widget_get_allocation (widget, &allocation); priv->activity_pos = allocation.height - padding.top - (allocation.width - padding.left - padding.right); priv->activity_dir = 1; } } } static void gtk_progress_bar_get_activity (GtkProgressBar *pbar, GtkOrientation orientation, gint *offset, gint *amount) { GtkProgressBarPrivate *priv = pbar->priv; GtkAllocation allocation; GtkWidget *widget = GTK_WIDGET (pbar); *offset = priv->activity_pos; gtk_widget_get_allocation (widget, &allocation); if (orientation == GTK_ORIENTATION_HORIZONTAL) *amount = MAX (2, allocation.width / priv->activity_blocks); else *amount = MAX (2, allocation.height / priv->activity_blocks); } static void gtk_progress_bar_paint_activity (GtkProgressBar *pbar, cairo_t *cr, GtkOrientation orientation, gboolean inverted, int width, int height) { GtkStyleContext *context; GtkStateFlags state; GtkBorder padding; GtkWidget *widget = GTK_WIDGET (pbar); GdkRectangle area; context = gtk_widget_get_style_context (widget); state = gtk_widget_get_state_flags (widget); gtk_style_context_get_padding (context, state, &padding); if (orientation == GTK_ORIENTATION_HORIZONTAL) { gtk_progress_bar_get_activity (pbar, orientation, &area.x, &area.width); area.y = padding.top; area.height = height - padding.top - padding.bottom; } else { gtk_progress_bar_get_activity (pbar, orientation, &area.y, &area.height); area.x = padding.left; area.width = width - padding.left - padding.right; } gtk_style_context_save (context); gtk_style_context_set_state (context, state); gtk_style_context_add_class (context, GTK_STYLE_CLASS_PROGRESSBAR); gtk_style_context_add_class (context, GTK_STYLE_CLASS_PULSE); gtk_render_activity (context, cr, area.x, area.y, area.width, area.height); gtk_style_context_restore (context); } static void gtk_progress_bar_paint_continuous (GtkProgressBar *pbar, cairo_t *cr, gint amount, GtkOrientation orientation, gboolean inverted, int width, int height) { GtkStyleContext *context; GtkStateFlags state; GtkBorder padding; GtkWidget *widget = GTK_WIDGET (pbar); GdkRectangle area; if (amount <= 0) return; context = gtk_widget_get_style_context (widget); state = gtk_widget_get_state_flags (widget); gtk_style_context_get_padding (context, state, &padding); if (orientation == GTK_ORIENTATION_HORIZONTAL) { area.width = amount; area.height = height - padding.top - padding.bottom; area.y = padding.top; if (!inverted) area.x = padding.left; else area.x = width - amount - padding.right; } else { area.width = width - padding.left - padding.right; area.height = amount; area.x = padding.left; if (!inverted) area.y = padding.top; else area.y = height - amount - padding.bottom; } gtk_style_context_save (context); gtk_style_context_set_state (context, state); gtk_style_context_add_class (context, GTK_STYLE_CLASS_PROGRESSBAR); gtk_render_activity (context, cr, area.x, area.y, area.width, area.height); gtk_style_context_restore (context); } static void gtk_progress_bar_paint_text (GtkProgressBar *pbar, cairo_t *cr, gint offset, gint amount, GtkOrientation orientation, gboolean inverted, int width, int height) { GtkProgressBarPrivate *priv = pbar->priv; GtkStyleContext *context; GtkStateFlags state; GtkBorder padding; GtkWidget *widget = GTK_WIDGET (pbar); gint x; gint y; gchar *buf; GdkRectangle rect; PangoLayout *layout; PangoRectangle logical_rect; GdkRectangle prelight_clip, start_clip, end_clip; gfloat text_xalign = 0.5; gfloat text_yalign = 0.5; context = gtk_widget_get_style_context (widget); state = gtk_widget_get_state_flags (widget); gtk_style_context_get_padding (context, state, &padding); if (gtk_widget_get_direction (widget) != GTK_TEXT_DIR_LTR) text_xalign = 1.0 - text_xalign; buf = get_current_text (pbar); layout = gtk_widget_create_pango_layout (widget, buf); pango_layout_set_ellipsize (layout, priv->ellipsize); if (priv->ellipsize) pango_layout_set_width (layout, width * PANGO_SCALE); pango_layout_get_pixel_extents (layout, NULL, &logical_rect); x = padding.left + 1 + text_xalign * (width - padding.left - padding.right - 2 - logical_rect.width); y = padding.top + 1 + text_yalign * (height - padding.top - padding.bottom - 2 - logical_rect.height); rect.x = padding.left; rect.y = padding.top; rect.width = width - padding.left - padding.right; rect.height = height - padding.top - padding.bottom; prelight_clip = start_clip = end_clip = rect; if (orientation == GTK_ORIENTATION_HORIZONTAL) { if (!inverted) { if (offset != -1) prelight_clip.x = offset; prelight_clip.width = amount; start_clip.width = prelight_clip.x - start_clip.x; end_clip.x = start_clip.x + start_clip.width + prelight_clip.width; end_clip.width -= prelight_clip.width + start_clip.width; } else { if (offset != -1) prelight_clip.x = offset; else prelight_clip.x = rect.x + rect.width - amount; prelight_clip.width = amount; start_clip.width = prelight_clip.x - start_clip.x; end_clip.x = start_clip.x + start_clip.width + prelight_clip.width; end_clip.width -= prelight_clip.width + start_clip.width; } } else { if (!inverted) { if (offset != -1) prelight_clip.y = offset; prelight_clip.height = amount; start_clip.height = prelight_clip.y - start_clip.y; end_clip.y = start_clip.y + start_clip.height + prelight_clip.height; end_clip.height -= prelight_clip.height + start_clip.height; } else { if (offset != -1) prelight_clip.y = offset; else prelight_clip.y = rect.y + rect.height - amount; prelight_clip.height = amount; start_clip.height = prelight_clip.y - start_clip.y; end_clip.y = start_clip.y + start_clip.height + prelight_clip.height; end_clip.height -= prelight_clip.height + start_clip.height; } } gtk_style_context_save (context); gtk_style_context_set_state (context, state); gtk_style_context_add_class (context, GTK_STYLE_CLASS_TROUGH); if (start_clip.width > 0 && start_clip.height > 0) { cairo_save (cr); gdk_cairo_rectangle (cr, &start_clip); cairo_clip (cr); gtk_render_layout (context, cr, x, y, layout); cairo_restore (cr); } if (end_clip.width > 0 && end_clip.height > 0) { cairo_save (cr); gdk_cairo_rectangle (cr, &end_clip); cairo_clip (cr); gtk_render_layout (context, cr, x, y, layout); cairo_restore (cr); } gtk_style_context_restore (context); cairo_save (cr); gdk_cairo_rectangle (cr, &prelight_clip); cairo_clip (cr); gtk_style_context_save (context); gtk_style_context_set_state (context, state); gtk_style_context_add_class (context, GTK_STYLE_CLASS_PROGRESSBAR); gtk_render_layout (context, cr, x, y, layout); gtk_style_context_restore (context); cairo_restore (cr); g_object_unref (layout); g_free (buf); } static gboolean gtk_progress_bar_draw (GtkWidget *widget, cairo_t *cr) { GtkProgressBar *pbar = GTK_PROGRESS_BAR (widget); GtkProgressBarPrivate *priv = pbar->priv; GtkOrientation orientation; gboolean inverted; GtkStyleContext *context; GtkStateFlags state; GtkBorder padding; int width, height; context = gtk_widget_get_style_context (widget); state = gtk_widget_get_state_flags (widget); gtk_style_context_get_padding (context, state, &padding); orientation = priv->orientation; inverted = priv->inverted; if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL) { if (priv->orientation == GTK_ORIENTATION_HORIZONTAL) inverted = !inverted; } width = gtk_widget_get_allocated_width (widget); height = gtk_widget_get_allocated_height (widget); gtk_style_context_save (context); gtk_style_context_set_state (context, state); gtk_style_context_add_class (context, GTK_STYLE_CLASS_TROUGH); gtk_render_background (context, cr, 0, 0, width, height); gtk_render_frame (context, cr, 0, 0, width, height); gtk_style_context_restore (context); if (priv->activity_mode) { gtk_progress_bar_paint_activity (pbar, cr, orientation, inverted, width, height); if (priv->show_text) { gint offset; gint amount; gtk_progress_bar_get_activity (pbar, orientation, &offset, &amount); gtk_progress_bar_paint_text (pbar, cr, offset, amount, orientation, inverted, width, height); } } else { gint amount; gint space; if (orientation == GTK_ORIENTATION_HORIZONTAL) space = width - padding.left - padding.right; else space = height - padding.top - padding.bottom; amount = space * gtk_progress_bar_get_fraction (pbar); gtk_progress_bar_paint_continuous (pbar, cr, amount, orientation, inverted, width, height); if (priv->show_text) gtk_progress_bar_paint_text (pbar, cr, -1, amount, orientation, inverted, width, height); } return FALSE; } static void gtk_progress_bar_set_activity_mode (GtkProgressBar *pbar, gboolean activity_mode) { GtkProgressBarPrivate *priv = pbar->priv; activity_mode = !!activity_mode; if (priv->activity_mode != activity_mode) { priv->activity_mode = activity_mode; if (priv->activity_mode) gtk_progress_bar_act_mode_enter (pbar); gtk_widget_queue_resize (GTK_WIDGET (pbar)); } } /** * gtk_progress_bar_set_fraction: * @pbar: a #GtkProgressBar * @fraction: fraction of the task that's been completed * * Causes the progress bar to "fill in" the given fraction * of the bar. The fraction should be between 0.0 and 1.0, * inclusive. * */ void gtk_progress_bar_set_fraction (GtkProgressBar *pbar, gdouble fraction) { GtkProgressBarPrivate* priv; g_return_if_fail (GTK_IS_PROGRESS_BAR (pbar)); priv = pbar->priv; priv->fraction = CLAMP(fraction, 0.0, 1.0); gtk_progress_bar_set_activity_mode (pbar, FALSE); gtk_progress_bar_real_update (pbar); g_object_notify (G_OBJECT (pbar), "fraction"); } /** * gtk_progress_bar_pulse: * @pbar: a #GtkProgressBar * * Indicates that some progress is made, but you don't know how much. * Causes the progress bar to enter "activity mode," where a block * bounces back and forth. Each call to gtk_progress_bar_pulse() * causes the block to move by a little bit (the amount of movement * per pulse is determined by gtk_progress_bar_set_pulse_step()). **/ void gtk_progress_bar_pulse (GtkProgressBar *pbar) { g_return_if_fail (GTK_IS_PROGRESS_BAR (pbar)); gtk_progress_bar_set_activity_mode (pbar, TRUE); gtk_progress_bar_real_update (pbar); } /** * gtk_progress_bar_set_text: * @pbar: a #GtkProgressBar * @text: (allow-none): a UTF-8 string, or %NULL * * Causes the given @text to appear superimposed on the progress bar. * * If @text is %NULL and #GtkProgressBar:show-text is %TRUE, the current * value of #GtkProgressBar:fraction will be displayed as a percentage. * * If @text is non-%NULL and #GtkProgressBar:show-text is %TRUE, the text will * be displayed. In this case, it will not display the progress percentage. * If @text is the empty string, the progress bar will still be styled and sized * suitably for containing text, as long as #GtkProgressBar:show-text is %TRUE. **/ void gtk_progress_bar_set_text (GtkProgressBar *pbar, const gchar *text) { GtkProgressBarPrivate *priv; g_return_if_fail (GTK_IS_PROGRESS_BAR (pbar)); priv = pbar->priv; /* Don't notify again if nothing's changed. */ if (g_strcmp0 (priv->text, text) == 0) return; g_free (priv->text); priv->text = g_strdup (text); gtk_widget_queue_resize (GTK_WIDGET (pbar)); g_object_notify (G_OBJECT (pbar), "text"); } /** * gtk_progress_bar_set_show_text: * @pbar: a #GtkProgressBar * @show_text: whether to show superimposed text * * Sets whether the progressbar will show text superimposed * over the bar. The shown text is either the value of * the #GtkProgressBar::text property or, if that is %NULL, * the #GtkProgressBar::fraction value, as a percentage. * * To make a progress bar that is styled and sized suitably for containing * text (even if the actual text is blank), set #GtkProgressBar:show-text to * %TRUE and #GtkProgressBar:text to the empty string (not %NULL). * * Since: 3.0 */ void gtk_progress_bar_set_show_text (GtkProgressBar *pbar, gboolean show_text) { GtkProgressBarPrivate *priv; g_return_if_fail (GTK_IS_PROGRESS_BAR (pbar)); priv = pbar->priv; show_text = !!show_text; if (priv->show_text != show_text) { priv->show_text = show_text; gtk_widget_queue_resize (GTK_WIDGET (pbar)); g_object_notify (G_OBJECT (pbar), "show-text"); } } /** * gtk_progress_bar_get_show_text: * @pbar: a #GtkProgressBar * * Gets the value of the #GtkProgressBar::show-text property. * See gtk_progress_bar_set_show_text(). * * Returns: %TRUE if text is shown in the progress bar * * Since: 3.0 */ gboolean gtk_progress_bar_get_show_text (GtkProgressBar *pbar) { g_return_val_if_fail (GTK_IS_PROGRESS_BAR (pbar), FALSE); return pbar->priv->show_text; } /** * gtk_progress_bar_set_pulse_step: * @pbar: a #GtkProgressBar * @fraction: fraction between 0.0 and 1.0 * * Sets the fraction of total progress bar length to move the * bouncing block for each call to gtk_progress_bar_pulse(). **/ void gtk_progress_bar_set_pulse_step (GtkProgressBar *pbar, gdouble fraction) { GtkProgressBarPrivate *priv; g_return_if_fail (GTK_IS_PROGRESS_BAR (pbar)); priv = pbar->priv; priv->pulse_fraction = fraction; g_object_notify (G_OBJECT (pbar), "pulse-step"); } static void gtk_progress_bar_set_orientation (GtkProgressBar *pbar, GtkOrientation orientation) { GtkProgressBarPrivate *priv = pbar->priv; if (priv->orientation != orientation) { priv->orientation = orientation; _gtk_orientable_set_style_classes (GTK_ORIENTABLE (pbar)); gtk_widget_queue_resize (GTK_WIDGET (pbar)); } } /** * gtk_progress_bar_set_inverted: * @pbar: a #GtkProgressBar * @inverted: %TRUE to invert the progress bar * * Progress bars normally grow from top to bottom or left to right. * Inverted progress bars grow in the opposite direction. */ void gtk_progress_bar_set_inverted (GtkProgressBar *pbar, gboolean inverted) { GtkProgressBarPrivate *priv; g_return_if_fail (GTK_IS_PROGRESS_BAR (pbar)); priv = pbar->priv; if (priv->inverted != inverted) { priv->inverted = inverted; gtk_widget_queue_resize (GTK_WIDGET (pbar)); g_object_notify (G_OBJECT (pbar), "inverted"); } } /** * gtk_progress_bar_get_text: * @pbar: a #GtkProgressBar * * Retrieves the text displayed superimposed on the progress bar, * if any, otherwise %NULL. The return value is a reference * to the text, not a copy of it, so will become invalid * if you change the text in the progress bar. * * Return value: text, or %NULL; this string is owned by the widget * and should not be modified or freed. **/ const gchar* gtk_progress_bar_get_text (GtkProgressBar *pbar) { g_return_val_if_fail (GTK_IS_PROGRESS_BAR (pbar), NULL); return pbar->priv->text; } /** * gtk_progress_bar_get_fraction: * @pbar: a #GtkProgressBar * * Returns the current fraction of the task that's been completed. * * Return value: a fraction from 0.0 to 1.0 **/ gdouble gtk_progress_bar_get_fraction (GtkProgressBar *pbar) { g_return_val_if_fail (GTK_IS_PROGRESS_BAR (pbar), 0); return pbar->priv->fraction; } /** * gtk_progress_bar_get_pulse_step: * @pbar: a #GtkProgressBar * * Retrieves the pulse step set with gtk_progress_bar_set_pulse_step() * * Return value: a fraction from 0.0 to 1.0 **/ gdouble gtk_progress_bar_get_pulse_step (GtkProgressBar *pbar) { g_return_val_if_fail (GTK_IS_PROGRESS_BAR (pbar), 0); return pbar->priv->pulse_fraction; } /** * gtk_progress_bar_get_inverted: * @pbar: a #GtkProgressBar * * Gets the value set by gtk_progress_bar_set_inverted() * * Return value: %TRUE if the progress bar is inverted */ gboolean gtk_progress_bar_get_inverted (GtkProgressBar *pbar) { g_return_val_if_fail (GTK_IS_PROGRESS_BAR (pbar), FALSE); return pbar->priv->inverted; } /** * gtk_progress_bar_set_ellipsize: * @pbar: a #GtkProgressBar * @mode: a #PangoEllipsizeMode * * Sets the mode used to ellipsize (add an ellipsis: "...") the text * if there is not enough space to render the entire string. * * Since: 2.6 **/ void gtk_progress_bar_set_ellipsize (GtkProgressBar *pbar, PangoEllipsizeMode mode) { GtkProgressBarPrivate *priv; g_return_if_fail (GTK_IS_PROGRESS_BAR (pbar)); g_return_if_fail (mode >= PANGO_ELLIPSIZE_NONE && mode <= PANGO_ELLIPSIZE_END); priv = pbar->priv; if ((PangoEllipsizeMode)priv->ellipsize != mode) { priv->ellipsize = mode; g_object_notify (G_OBJECT (pbar), "ellipsize"); gtk_widget_queue_resize (GTK_WIDGET (pbar)); } } /** * gtk_progress_bar_get_ellipsize: * @pbar: a #GtkProgressBar * * Returns the ellipsizing position of the progressbar. * See gtk_progress_bar_set_ellipsize(). * * Return value: #PangoEllipsizeMode * * Since: 2.6 **/ PangoEllipsizeMode gtk_progress_bar_get_ellipsize (GtkProgressBar *pbar) { g_return_val_if_fail (GTK_IS_PROGRESS_BAR (pbar), PANGO_ELLIPSIZE_NONE); return pbar->priv->ellipsize; }