/* GIMP - The GNU Image Manipulation Program * Copyright (C) 1995 Spencer Kimball and Peter Mattis * * gimpspinscale.c * Copyright (C) 2010 Michael Natterer * 2012 Øyvind Kolås * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 3 of the License, or * (at your option) any later version. * * This program 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 General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see . */ #include "config.h" #include #include #include #include "libgimpwidgets/gimpwidgets.h" #include "libgimpmath/gimpmath.h" #include "widgets-types.h" #include "gimpspinscale.h" #include "gimp-intl.h" enum { PROP_0, PROP_LABEL }; typedef enum { TARGET_NUMBER, TARGET_UPPER, TARGET_LOWER } SpinScaleTarget; typedef struct _GimpSpinScalePrivate GimpSpinScalePrivate; struct _GimpSpinScalePrivate { gchar *label; gchar *label_text; gchar *label_pattern; GtkWindow *mnemonic_window; guint mnemonic_keyval; gboolean mnemonics_visible; gboolean scale_limits_set; gdouble scale_lower; gdouble scale_upper; gdouble gamma; PangoLayout *layout; gboolean changing_value; gboolean relative_change; gdouble start_x; gdouble start_value; }; #define GET_PRIVATE(obj) (G_TYPE_INSTANCE_GET_PRIVATE ((obj), \ GIMP_TYPE_SPIN_SCALE, \ GimpSpinScalePrivate)) static void gimp_spin_scale_dispose (GObject *object); static void gimp_spin_scale_finalize (GObject *object); static void gimp_spin_scale_set_property (GObject *object, guint property_id, const GValue *value, GParamSpec *pspec); static void gimp_spin_scale_get_property (GObject *object, guint property_id, GValue *value, GParamSpec *pspec); static void gimp_spin_scale_size_request (GtkWidget *widget, GtkRequisition *requisition); static void gimp_spin_scale_style_set (GtkWidget *widget, GtkStyle *prev_style); static gboolean gimp_spin_scale_expose (GtkWidget *widget, GdkEventExpose *event); static gboolean gimp_spin_scale_button_press (GtkWidget *widget, GdkEventButton *event); static gboolean gimp_spin_scale_button_release (GtkWidget *widget, GdkEventButton *event); static gboolean gimp_spin_scale_motion_notify (GtkWidget *widget, GdkEventMotion *event); static gboolean gimp_spin_scale_leave_notify (GtkWidget *widget, GdkEventCrossing *event); static void gimp_spin_scale_hierarchy_changed (GtkWidget *widget, GtkWidget *old_toplevel); static void gimp_spin_scale_screen_changed (GtkWidget *widget, GdkScreen *old_screen); static void gimp_spin_scale_value_changed (GtkSpinButton *spin_button); static void gimp_spin_scale_settings_notify (GtkSettings *settings, const GParamSpec *pspec, GimpSpinScale *scale); static void gimp_spin_scale_mnemonics_notify (GtkWindow *window, const GParamSpec *pspec, GimpSpinScale *scale); static void gimp_spin_scale_setup_mnemonic (GimpSpinScale *scale, guint previous_keyval); G_DEFINE_TYPE (GimpSpinScale, gimp_spin_scale, GTK_TYPE_SPIN_BUTTON); #define parent_class gimp_spin_scale_parent_class static void gimp_spin_scale_class_init (GimpSpinScaleClass *klass) { GObjectClass *object_class = G_OBJECT_CLASS (klass); GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass); GtkSpinButtonClass *spin_button_class = GTK_SPIN_BUTTON_CLASS (klass); object_class->dispose = gimp_spin_scale_dispose; object_class->finalize = gimp_spin_scale_finalize; object_class->set_property = gimp_spin_scale_set_property; object_class->get_property = gimp_spin_scale_get_property; widget_class->size_request = gimp_spin_scale_size_request; widget_class->style_set = gimp_spin_scale_style_set; widget_class->expose_event = gimp_spin_scale_expose; widget_class->button_press_event = gimp_spin_scale_button_press; widget_class->button_release_event = gimp_spin_scale_button_release; widget_class->motion_notify_event = gimp_spin_scale_motion_notify; widget_class->leave_notify_event = gimp_spin_scale_leave_notify; widget_class->hierarchy_changed = gimp_spin_scale_hierarchy_changed; widget_class->screen_changed = gimp_spin_scale_screen_changed; spin_button_class->value_changed = gimp_spin_scale_value_changed; g_object_class_install_property (object_class, PROP_LABEL, g_param_spec_string ("label", NULL, NULL, NULL, GIMP_PARAM_READWRITE)); g_type_class_add_private (klass, sizeof (GimpSpinScalePrivate)); } static void gimp_spin_scale_init (GimpSpinScale *scale) { GimpSpinScalePrivate *private = GET_PRIVATE (scale); gtk_widget_add_events (GTK_WIDGET (scale), GDK_BUTTON_PRESS_MASK | GDK_BUTTON_RELEASE_MASK | GDK_POINTER_MOTION_MASK | GDK_BUTTON1_MOTION_MASK | GDK_LEAVE_NOTIFY_MASK); gtk_entry_set_alignment (GTK_ENTRY (scale), 1.0); gtk_entry_set_has_frame (GTK_ENTRY (scale), FALSE); gtk_spin_button_set_numeric (GTK_SPIN_BUTTON (scale), TRUE); private->mnemonic_keyval = GDK_KEY_VoidSymbol; private->gamma = 1.0; } static void gimp_spin_scale_dispose (GObject *object) { GimpSpinScalePrivate *private = GET_PRIVATE (object); guint keyval; keyval = private->mnemonic_keyval; private->mnemonic_keyval = GDK_KEY_VoidSymbol; gimp_spin_scale_setup_mnemonic (GIMP_SPIN_SCALE (object), keyval); if (private->layout) { g_object_unref (private->layout); private->layout = NULL; } G_OBJECT_CLASS (parent_class)->dispose (object); } static void gimp_spin_scale_finalize (GObject *object) { GimpSpinScalePrivate *private = GET_PRIVATE (object); if (private->label) { g_free (private->label); private->label = NULL; } if (private->label_text) { g_free (private->label_text); private->label_text = NULL; } if (private->label_pattern) { g_free (private->label_pattern); private->label_pattern = NULL; } G_OBJECT_CLASS (parent_class)->finalize (object); } static void gimp_spin_scale_set_property (GObject *object, guint property_id, const GValue *value, GParamSpec *pspec) { GimpSpinScale *scale = GIMP_SPIN_SCALE (object); switch (property_id) { case PROP_LABEL: gimp_spin_scale_set_label (scale, g_value_get_string (value)); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec); break; } } static void gimp_spin_scale_get_property (GObject *object, guint property_id, GValue *value, GParamSpec *pspec) { GimpSpinScale *scale = GIMP_SPIN_SCALE (object); switch (property_id) { case PROP_LABEL: g_value_set_string (value, gimp_spin_scale_get_label (scale)); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec); break; } } static void gimp_spin_scale_size_request (GtkWidget *widget, GtkRequisition *requisition) { GimpSpinScalePrivate *private = GET_PRIVATE (widget); GtkStyle *style = gtk_widget_get_style (widget); PangoContext *context = gtk_widget_get_pango_context (widget); PangoFontMetrics *metrics; gint height; GTK_WIDGET_CLASS (parent_class)->size_request (widget, requisition); metrics = pango_context_get_metrics (context, style->font_desc, pango_context_get_language (context)); height = PANGO_PIXELS (pango_font_metrics_get_ascent (metrics) + pango_font_metrics_get_descent (metrics)); requisition->height += height; if (private->label) { gint char_width; gint digit_width; gint char_pixels; char_width = pango_font_metrics_get_approximate_char_width (metrics); digit_width = pango_font_metrics_get_approximate_digit_width (metrics); char_pixels = PANGO_PIXELS (MAX (char_width, digit_width)); /* ~3 chars for the ellipses */ requisition->width += char_pixels * 3; } pango_font_metrics_unref (metrics); } static void gimp_spin_scale_style_set (GtkWidget *widget, GtkStyle *prev_style) { GimpSpinScalePrivate *private = GET_PRIVATE (widget); GTK_WIDGET_CLASS (parent_class)->style_set (widget, prev_style); if (private->layout) { g_object_unref (private->layout); private->layout = NULL; } } static PangoAttrList * pattern_to_attrs (const gchar *text, const gchar *pattern) { PangoAttrList *attrs = pango_attr_list_new (); const char *p = text; const char *q = pattern; const char *start; while (TRUE) { while (*p && *q && *q != '_') { p = g_utf8_next_char (p); q++; } start = p; while (*p && *q && *q == '_') { p = g_utf8_next_char (p); q++; } if (p > start) { PangoAttribute *attr = pango_attr_underline_new (PANGO_UNDERLINE_LOW); attr->start_index = start - text; attr->end_index = p - text; pango_attr_list_insert (attrs, attr); } else break; } return attrs; } static gboolean gimp_spin_scale_expose (GtkWidget *widget, GdkEventExpose *event) { GimpSpinScalePrivate *private = GET_PRIVATE (widget); GtkStyle *style = gtk_widget_get_style (widget); cairo_t *cr; gboolean rtl; gint w, h; GTK_WIDGET_CLASS (parent_class)->expose_event (widget, event); cr = gdk_cairo_create (event->window); gdk_cairo_region (cr, event->region); cairo_clip (cr); rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL); w = gdk_window_get_width (event->window); h = gdk_window_get_height (event->window); cairo_set_line_width (cr, 1.0); if (event->window == gtk_entry_get_text_window (GTK_ENTRY (widget))) { /* let spinbutton-side line of rectangle disappear */ if (rtl) cairo_rectangle (cr, -0.5, 0.5, w, h - 1.0); else cairo_rectangle (cr, 0.5, 0.5, w, h - 1.0); gdk_cairo_set_source_color (cr, &style->text[gtk_widget_get_state (widget)]); cairo_stroke (cr); } else { /* let text-box-side line of rectangle disappear */ if (rtl) cairo_rectangle (cr, 0.5, 0.5, w, h - 1.0); else cairo_rectangle (cr, -0.5, 0.5, w, h - 1.0); gdk_cairo_set_source_color (cr, &style->text[gtk_widget_get_state (widget)]); cairo_stroke (cr); if (rtl) cairo_rectangle (cr, 1.5, 1.5, w - 2.0, h - 3.0); else cairo_rectangle (cr, 0.5, 1.5, w - 2.0, h - 3.0); gdk_cairo_set_source_color (cr, &style->base[gtk_widget_get_state (widget)]); cairo_stroke (cr); } if (private->label && gtk_widget_is_drawable (widget) && event->window == gtk_entry_get_text_window (GTK_ENTRY (widget))) { GtkRequisition requisition; GtkAllocation allocation; PangoRectangle logical; gint layout_offset_x; gint layout_offset_y; GtkStateType state; GdkColor text_color; GdkColor bar_text_color; gint window_width; gint window_height; gdouble progress_fraction; gint progress_x; gint progress_y; gint progress_width; gint progress_height; GTK_WIDGET_CLASS (parent_class)->size_request (widget, &requisition); gtk_widget_get_allocation (widget, &allocation); if (! private->layout) { private->layout = gtk_widget_create_pango_layout (widget, private->label_text); pango_layout_set_ellipsize (private->layout, PANGO_ELLIPSIZE_END); if (private->mnemonics_visible) { PangoAttrList *attrs; attrs = pattern_to_attrs (private->label_text, private->label_pattern); if (attrs) { pango_layout_set_attributes (private->layout, attrs); pango_attr_list_unref (attrs); } } } pango_layout_set_width (private->layout, PANGO_SCALE * (allocation.width - requisition.width)); pango_layout_get_pixel_extents (private->layout, NULL, &logical); gtk_entry_get_layout_offsets (GTK_ENTRY (widget), NULL, &layout_offset_y); if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL) layout_offset_x = w - logical.width - 2; else layout_offset_x = 2; layout_offset_x -= logical.x; state = GTK_STATE_SELECTED; if (! gtk_widget_get_sensitive (widget)) state = GTK_STATE_INSENSITIVE; text_color = style->text[gtk_widget_get_state (widget)]; bar_text_color = style->fg[state]; window_width = gdk_window_get_width (event->window); window_height = gdk_window_get_height (event->window); progress_fraction = gtk_entry_get_progress_fraction (GTK_ENTRY (widget)); if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL) { progress_fraction = 1.0 - progress_fraction; progress_x = window_width * progress_fraction; progress_y = 0; progress_width = window_width - progress_x; progress_height = window_height; } else { progress_x = 0; progress_y = 0; progress_width = window_width * progress_fraction; progress_height = window_height; } cairo_save (cr); cairo_set_fill_rule (cr, CAIRO_FILL_RULE_EVEN_ODD); cairo_rectangle (cr, 0, 0, window_width, window_height); cairo_rectangle (cr, progress_x, progress_y, progress_width, progress_height); cairo_clip (cr); cairo_set_fill_rule (cr, CAIRO_FILL_RULE_WINDING); cairo_move_to (cr, layout_offset_x, layout_offset_y); gdk_cairo_set_source_color (cr, &text_color); pango_cairo_show_layout (cr, private->layout); cairo_restore (cr); cairo_rectangle (cr, progress_x, progress_y, progress_width, progress_height); cairo_clip (cr); cairo_move_to (cr, layout_offset_x, layout_offset_y); gdk_cairo_set_source_color (cr, &bar_text_color); pango_cairo_show_layout (cr, private->layout); } cairo_destroy (cr); return FALSE; } static SpinScaleTarget gimp_spin_scale_get_target (GtkWidget *widget, gdouble x, gdouble y) { GtkAllocation allocation; PangoRectangle logical; gint layout_x; gint layout_y; gtk_widget_get_allocation (widget, &allocation); gtk_entry_get_layout_offsets (GTK_ENTRY (widget), &layout_x, &layout_y); pango_layout_get_pixel_extents (gtk_entry_get_layout (GTK_ENTRY (widget)), NULL, &logical); if (x > layout_x && x < layout_x + logical.width && y > layout_y && y < layout_y + logical.height) { return TARGET_NUMBER; } else if (y > allocation.height / 2) { return TARGET_LOWER; } return TARGET_UPPER; } static void gimp_spin_scale_get_limits (GimpSpinScale *scale, gdouble *lower, gdouble *upper) { GimpSpinScalePrivate *private = GET_PRIVATE (scale); if (private->scale_limits_set) { *lower = private->scale_lower; *upper = private->scale_upper; } else { GtkSpinButton *spin_button = GTK_SPIN_BUTTON (scale); GtkAdjustment *adjustment = gtk_spin_button_get_adjustment (spin_button); *lower = gtk_adjustment_get_lower (adjustment); *upper = gtk_adjustment_get_upper (adjustment); } } static void gimp_spin_scale_change_value (GtkWidget *widget, gdouble x) { GimpSpinScalePrivate *private = GET_PRIVATE (widget); GtkSpinButton *spin_button = GTK_SPIN_BUTTON (widget); GtkAdjustment *adjustment = gtk_spin_button_get_adjustment (spin_button); GdkWindow *text_window = gtk_entry_get_text_window (GTK_ENTRY (widget)); gdouble lower; gdouble upper; gint width; gdouble value; gint digits; gint power = 1; gimp_spin_scale_get_limits (GIMP_SPIN_SCALE (widget), &lower, &upper); width = gdk_window_get_width (text_window); if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL) x = width - x; if (private->relative_change) { gdouble diff; gdouble step; step = (upper - lower) / width / 10.0; if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL) diff = x - (width - private->start_x); else diff = x - private->start_x; value = (private->start_value + diff * step); } else { gdouble fraction; fraction = x / (gdouble) width; if (fraction > 0.0) fraction = pow (fraction, private->gamma); value = fraction * (upper - lower) + lower; } digits = gtk_spin_button_get_digits (spin_button); while (digits--) power *= 10; /* round the value to the possible precision of the spinbutton, so * a focus-out will not change the value again, causing inadvertend * adjustment signals. */ value *= power; value = RINT (value); value /= power; gtk_adjustment_set_value (adjustment, value); } static gboolean gimp_spin_scale_button_press (GtkWidget *widget, GdkEventButton *event) { GimpSpinScalePrivate *private = GET_PRIVATE (widget); private->changing_value = FALSE; private->relative_change = FALSE; if (event->window == gtk_entry_get_text_window (GTK_ENTRY (widget))) { switch (gimp_spin_scale_get_target (widget, event->x, event->y)) { case TARGET_UPPER: private->changing_value = TRUE; gtk_widget_grab_focus (widget); gimp_spin_scale_change_value (widget, event->x); return TRUE; case TARGET_LOWER: private->changing_value = TRUE; gtk_widget_grab_focus (widget); private->relative_change = TRUE; private->start_x = event->x; private->start_value = gtk_adjustment_get_value (gtk_spin_button_get_adjustment (GTK_SPIN_BUTTON (widget))); return TRUE; default: break; } } return GTK_WIDGET_CLASS (parent_class)->button_press_event (widget, event); } static gboolean gimp_spin_scale_button_release (GtkWidget *widget, GdkEventButton *event) { GimpSpinScalePrivate *private = GET_PRIVATE (widget); if (private->changing_value) { private->changing_value = FALSE; gimp_spin_scale_change_value (widget, event->x); return TRUE; } return GTK_WIDGET_CLASS (parent_class)->button_release_event (widget, event); } static gboolean gimp_spin_scale_motion_notify (GtkWidget *widget, GdkEventMotion *event) { GimpSpinScalePrivate *private = GET_PRIVATE (widget); gdk_event_request_motions (event); if (private->changing_value) { gimp_spin_scale_change_value (widget, event->x); return TRUE; } GTK_WIDGET_CLASS (parent_class)->motion_notify_event (widget, event); if (! (event->state & (GDK_BUTTON1_MASK | GDK_BUTTON2_MASK | GDK_BUTTON3_MASK)) && event->window == gtk_entry_get_text_window (GTK_ENTRY (widget))) { GdkDisplay *display = gtk_widget_get_display (widget); GdkCursor *cursor = NULL; switch (gimp_spin_scale_get_target (widget, event->x, event->y)) { case TARGET_NUMBER: cursor = gdk_cursor_new_for_display (display, GDK_XTERM); break; case TARGET_UPPER: cursor = gdk_cursor_new_for_display (display, GDK_SB_UP_ARROW); break; case TARGET_LOWER: cursor = gdk_cursor_new_for_display (display, GDK_SB_H_DOUBLE_ARROW); break; } gdk_window_set_cursor (event->window, cursor); gdk_cursor_unref (cursor); } return FALSE; } static gboolean gimp_spin_scale_leave_notify (GtkWidget *widget, GdkEventCrossing *event) { gdk_window_set_cursor (event->window, NULL); return GTK_WIDGET_CLASS (parent_class)->leave_notify_event (widget, event); } static void gimp_spin_scale_hierarchy_changed (GtkWidget *widget, GtkWidget *old_toplevel) { GimpSpinScalePrivate *private = GET_PRIVATE (widget); gimp_spin_scale_setup_mnemonic (GIMP_SPIN_SCALE (widget), private->mnemonic_keyval); } static void gimp_spin_scale_screen_changed (GtkWidget *widget, GdkScreen *old_screen) { GimpSpinScale *scale = GIMP_SPIN_SCALE (widget); GimpSpinScalePrivate *private = GET_PRIVATE (scale); GtkSettings *settings; if (private->layout) { g_object_unref (private->layout); private->layout = NULL; } if (old_screen) { settings = gtk_settings_get_for_screen (old_screen); g_signal_handlers_disconnect_by_func (settings, gimp_spin_scale_settings_notify, scale); } if (! gtk_widget_has_screen (widget)) return; settings = gtk_widget_get_settings (widget); g_signal_connect (settings, "notify::gtk-enable-mnemonics", G_CALLBACK (gimp_spin_scale_settings_notify), scale); g_signal_connect (settings, "notify::gtk-enable-accels", G_CALLBACK (gimp_spin_scale_settings_notify), scale); gimp_spin_scale_settings_notify (settings, NULL, scale); } static void gimp_spin_scale_value_changed (GtkSpinButton *spin_button) { GimpSpinScalePrivate *private = GET_PRIVATE (spin_button); GtkAdjustment *adjustment = gtk_spin_button_get_adjustment (spin_button); gdouble lower; gdouble upper; gdouble value; gimp_spin_scale_get_limits (GIMP_SPIN_SCALE (spin_button), &lower, &upper); value = CLAMP (gtk_adjustment_get_value (adjustment), lower, upper); gtk_entry_set_progress_fraction (GTK_ENTRY (spin_button), pow ((value - lower) / (upper - lower), 1.0 / private->gamma)); } static void gimp_spin_scale_settings_notify (GtkSettings *settings, const GParamSpec *pspec, GimpSpinScale *scale) { GtkWidget *toplevel = gtk_widget_get_toplevel (GTK_WIDGET (scale)); if (GTK_IS_WINDOW (toplevel)) gimp_spin_scale_mnemonics_notify (GTK_WINDOW (toplevel), NULL, scale); } static void gimp_spin_scale_mnemonics_notify (GtkWindow *window, const GParamSpec *pspec, GimpSpinScale *scale) { GimpSpinScalePrivate *private = GET_PRIVATE (scale); gboolean mnemonics_visible = FALSE; gboolean enable_mnemonics; gboolean auto_mnemonics; g_object_get (gtk_widget_get_settings (GTK_WIDGET (scale)), "gtk-enable-mnemonics", &enable_mnemonics, "gtk-auto-mnemonics", &auto_mnemonics, NULL); if (enable_mnemonics && (! auto_mnemonics || gtk_widget_is_sensitive (GTK_WIDGET (scale)))) { g_object_get (window, "mnemonics-visible", &mnemonics_visible, NULL); } if (private->mnemonics_visible != mnemonics_visible) { private->mnemonics_visible = mnemonics_visible; if (private->layout) { g_object_unref (private->layout); private->layout = NULL; } gtk_widget_queue_draw (GTK_WIDGET (scale)); } } static void gimp_spin_scale_setup_mnemonic (GimpSpinScale *scale, guint previous_keyval) { GimpSpinScalePrivate *private = GET_PRIVATE (scale); GtkWidget *widget = GTK_WIDGET (scale); GtkWidget *toplevel; if (private->mnemonic_window) { g_signal_handlers_disconnect_by_func (private->mnemonic_window, gimp_spin_scale_mnemonics_notify, scale); gtk_window_remove_mnemonic (private->mnemonic_window, previous_keyval, widget); private->mnemonic_window = NULL; } toplevel = gtk_widget_get_toplevel (widget); if (gtk_widget_is_toplevel (toplevel) && private->mnemonic_keyval != GDK_KEY_VoidSymbol) { gtk_window_add_mnemonic (GTK_WINDOW (toplevel), private->mnemonic_keyval, widget); private->mnemonic_window = GTK_WINDOW (toplevel); g_signal_connect (toplevel, "notify::mnemonics-visible", G_CALLBACK (gimp_spin_scale_mnemonics_notify), scale); } } /* public functions */ GtkWidget * gimp_spin_scale_new (GtkAdjustment *adjustment, const gchar *label, gint digits) { g_return_val_if_fail (GTK_IS_ADJUSTMENT (adjustment), NULL); return g_object_new (GIMP_TYPE_SPIN_SCALE, "adjustment", adjustment, "label", label, "digits", digits, NULL); } static gboolean separate_uline_pattern (const gchar *str, guint *accel_key, gchar **new_str, gchar **pattern) { gboolean underscore; const gchar *src; gchar *dest; gchar *pattern_dest; *accel_key = GDK_KEY_VoidSymbol; *new_str = g_new (gchar, strlen (str) + 1); *pattern = g_new (gchar, g_utf8_strlen (str, -1) + 1); underscore = FALSE; src = str; dest = *new_str; pattern_dest = *pattern; while (*src) { gunichar c; const gchar *next_src; c = g_utf8_get_char (src); if (c == (gunichar)-1) { g_warning ("Invalid input string"); g_free (*new_str); g_free (*pattern); return FALSE; } next_src = g_utf8_next_char (src); if (underscore) { if (c == '_') *pattern_dest++ = ' '; else { *pattern_dest++ = '_'; if (*accel_key == GDK_KEY_VoidSymbol) *accel_key = gdk_keyval_to_lower (gdk_unicode_to_keyval (c)); } while (src < next_src) *dest++ = *src++; underscore = FALSE; } else { if (c == '_') { underscore = TRUE; src = next_src; } else { while (src < next_src) *dest++ = *src++; *pattern_dest++ = ' '; } } } *dest = 0; *pattern_dest = 0; return TRUE; } void gimp_spin_scale_set_label (GimpSpinScale *scale, const gchar *label) { GimpSpinScalePrivate *private; guint accel_key = GDK_KEY_VoidSymbol; gchar *text = NULL; gchar *pattern = NULL; g_return_if_fail (GIMP_IS_SPIN_SCALE (scale)); private = GET_PRIVATE (scale); if (label == private->label) return; if (label && ! separate_uline_pattern (label, &accel_key, &text, &pattern)) return; g_free (private->label); private->label = g_strdup (label); g_free (private->label_text); private->label_text = text; /* don't dup */ g_free (private->label_pattern); private->label_pattern = pattern; /* don't dup */ if (private->mnemonic_keyval != accel_key) { guint previous = private->mnemonic_keyval; private->mnemonic_keyval = accel_key; gimp_spin_scale_setup_mnemonic (scale, previous); } if (private->layout) { g_object_unref (private->layout); private->layout = NULL; } gtk_widget_queue_resize (GTK_WIDGET (scale)); g_object_notify (G_OBJECT (scale), "label"); } const gchar * gimp_spin_scale_get_label (GimpSpinScale *scale) { g_return_val_if_fail (GIMP_IS_SPIN_SCALE (scale), NULL); return GET_PRIVATE (scale)->label; } void gimp_spin_scale_set_scale_limits (GimpSpinScale *scale, gdouble lower, gdouble upper) { GimpSpinScalePrivate *private; GtkSpinButton *spin_button; GtkAdjustment *adjustment; g_return_if_fail (GIMP_IS_SPIN_SCALE (scale)); private = GET_PRIVATE (scale); spin_button = GTK_SPIN_BUTTON (scale); adjustment = gtk_spin_button_get_adjustment (spin_button); g_return_if_fail (lower >= gtk_adjustment_get_lower (adjustment)); g_return_if_fail (upper <= gtk_adjustment_get_upper (adjustment)); private->scale_limits_set = TRUE; private->scale_lower = lower; private->scale_upper = upper; private->gamma = 1.0; gimp_spin_scale_value_changed (spin_button); } void gimp_spin_scale_unset_scale_limits (GimpSpinScale *scale) { GimpSpinScalePrivate *private; g_return_if_fail (GIMP_IS_SPIN_SCALE (scale)); private = GET_PRIVATE (scale); private->scale_limits_set = FALSE; private->scale_lower = 0.0; private->scale_upper = 0.0; gimp_spin_scale_value_changed (GTK_SPIN_BUTTON (scale)); } gboolean gimp_spin_scale_get_scale_limits (GimpSpinScale *scale, gdouble *lower, gdouble *upper) { GimpSpinScalePrivate *private; g_return_val_if_fail (GIMP_IS_SPIN_SCALE (scale), FALSE); private = GET_PRIVATE (scale); if (lower) *lower = private->scale_lower; if (upper) *upper = private->scale_upper; return private->scale_limits_set; } void gimp_spin_scale_set_gamma (GimpSpinScale *scale, gdouble gamma) { GimpSpinScalePrivate *private; g_return_if_fail (GIMP_IS_SPIN_SCALE (scale)); private = GET_PRIVATE (scale); private->gamma = gamma; gimp_spin_scale_value_changed (GTK_SPIN_BUTTON (scale)); } gdouble gimp_spin_scale_get_gamma (GimpSpinScale *scale) { g_return_val_if_fail (GIMP_IS_SPIN_SCALE (scale), 1.0); return GET_PRIVATE (scale)->gamma; }