* GNT - The GLib Ncurses Toolkit * GNT is the legal property of its developers, whose names are too numerous * to list here. Please refer to the COPYRIGHT file distributed with this * This library 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 2 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, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02111-1301 USA static guint signals[SIGS] = { 0 }; static GntWidgetClass *parent_class = NULL; /* returns TRUE if the value was changed */ sanitize_value(GntSlider *slider) if (slider->current < slider->min) slider->current = slider->min; else if (slider->current > slider->max) slider->current = slider->max; redraw_slider(GntSlider *slider) GntWidget *widget = GNT_WIDGET(slider); if (GNT_WIDGET_IS_FLAG_SET(widget, GNT_WIDGET_MAPPED)) slider_value_changed(GntSlider *slider) g_signal_emit(slider, signals[SIG_VALUE_CHANGED], 0, slider->current); gnt_slider_draw(GntWidget *widget) GntSlider *slider = GNT_SLIDER(widget); size = widget->priv.height; size = widget->priv.width; if (gnt_widget_has_focus(widget)) attr |= GNT_COLOR_HIGHLIGHT; attr |= GNT_COLOR_HIGHLIGHT_D; if (slider->max != slider->min) position = ((size - 1) * (slider->current - slider->min)) / (slider->max - slider->min); mvwvline(widget->window, size-position, 0, ACS_VLINE | gnt_color_pair(GNT_COLOR_NORMAL) | A_BOLD, mvwvline(widget->window, 0, 0, ACS_VLINE | gnt_color_pair(GNT_COLOR_NORMAL), mvwhline(widget->window, 0, 0, ACS_HLINE | gnt_color_pair(GNT_COLOR_NORMAL) | A_BOLD, mvwhline(widget->window, 0, position, ACS_HLINE | gnt_color_pair(GNT_COLOR_NORMAL), slider->vertical ? (size - position - 1) : 0, slider->vertical ? 0 : position, ACS_CKBOARD | gnt_color_pair(attr)); gnt_slider_size_request(GntWidget *widget) if (GNT_SLIDER(widget)->vertical) { gnt_slider_map(GntWidget *widget) if (widget->priv.width == 0 || widget->priv.height == 0) gnt_widget_size_request(widget); step_back(GntBindable *bindable, GList *null) GntSlider *slider = GNT_SLIDER(bindable); gnt_slider_advance_step(slider, -1); small_step_back(GntBindable *bindable, GList *null) GntSlider *slider = GNT_SLIDER(bindable); gnt_slider_set_value(slider, slider->current - slider->smallstep); large_step_back(GntBindable *bindable, GList *null) GntSlider *slider = GNT_SLIDER(bindable); gnt_slider_set_value(slider, slider->current - slider->largestep); step_forward(GntBindable *bindable, GList *list) GntSlider *slider = GNT_SLIDER(bindable); gnt_slider_advance_step(slider, 1); small_step_forward(GntBindable *bindable, GList *null) GntSlider *slider = GNT_SLIDER(bindable); gnt_slider_set_value(slider, slider->current + slider->smallstep); large_step_forward(GntBindable *bindable, GList *null) GntSlider *slider = GNT_SLIDER(bindable); gnt_slider_set_value(slider, slider->current + slider->largestep); move_min_value(GntBindable *bindable, GList *null) GntSlider *slider = GNT_SLIDER(bindable); gnt_slider_set_value(slider, slider->min); move_max_value(GntBindable *bindable, GList *null) GntSlider *slider = GNT_SLIDER(bindable); gnt_slider_set_value(slider, slider->max); gnt_slider_class_init(GntSliderClass *klass) GntBindableClass *bindable = GNT_BINDABLE_CLASS(klass); parent_class = GNT_WIDGET_CLASS(klass); parent_class->draw = gnt_slider_draw; parent_class->map = gnt_slider_map; parent_class->size_request = gnt_slider_size_request; signals[SIG_VALUE_CHANGED] = G_TYPE_FROM_CLASS(klass), G_STRUCT_OFFSET(GntSliderClass, changed), g_cclosure_marshal_VOID__INT, G_TYPE_NONE, 1, G_TYPE_INT); gnt_bindable_class_register_action(bindable, "step-backward", step_back, GNT_KEY_LEFT, NULL); gnt_bindable_register_binding(bindable, "step-backward", GNT_KEY_DOWN, NULL); gnt_bindable_class_register_action(bindable, "step-forward", step_forward, GNT_KEY_RIGHT, NULL); gnt_bindable_register_binding(bindable, "step-forward", GNT_KEY_UP, NULL); gnt_bindable_class_register_action(bindable, "small-step-backward", small_step_back, GNT_KEY_CTRL_LEFT, NULL); gnt_bindable_register_binding(bindable, "small-step-backward", GNT_KEY_CTRL_DOWN, NULL); gnt_bindable_class_register_action(bindable, "small-step-forward", small_step_forward, GNT_KEY_CTRL_RIGHT, NULL); gnt_bindable_register_binding(bindable, "small-step-forward", GNT_KEY_CTRL_UP, NULL); gnt_bindable_class_register_action(bindable, "large-step-backward", large_step_back, GNT_KEY_PGDOWN, NULL); gnt_bindable_class_register_action(bindable, "large-step-forward", large_step_forward, GNT_KEY_PGUP, NULL); gnt_bindable_class_register_action(bindable, "min-value", move_min_value, GNT_KEY_HOME, NULL); gnt_bindable_class_register_action(bindable, "max-value", move_max_value, GNT_KEY_END, NULL); gnt_style_read_actions(G_OBJECT_CLASS_TYPE(klass), GNT_BINDABLE_CLASS(klass)); gnt_slider_init(GTypeInstance *instance, gpointer class) GntWidget *widget = GNT_WIDGET(instance); GNT_WIDGET_SET_FLAGS(widget, GNT_WIDGET_NO_SHADOW | GNT_WIDGET_NO_BORDER | GNT_WIDGET_CAN_TAKE_FOCUS); /****************************************************************************** *****************************************************************************/ gnt_slider_get_gtype(void) static const GTypeInfo info = { NULL, /* base_finalize */ (GClassInitFunc)gnt_slider_class_init, NULL, /* class_finalize */ gnt_slider_init, /* instance_init */ type = g_type_register_static(GNT_TYPE_WIDGET, GntWidget *gnt_slider_new(gboolean vertical, int max, int min) GntWidget *widget = g_object_new(GNT_TYPE_SLIDER, NULL); GntSlider *slider = GNT_SLIDER(widget); slider->vertical = vertical; GNT_WIDGET_SET_FLAGS(widget, GNT_WIDGET_GROW_Y); GNT_WIDGET_SET_FLAGS(widget, GNT_WIDGET_GROW_X); gnt_slider_set_range(slider, max, min); void gnt_slider_set_value(GntSlider *slider, int value) if (slider->current == value) if (old == slider->current) slider_value_changed(slider); int gnt_slider_get_value(GntSlider *slider) int gnt_slider_advance_step(GntSlider *slider, int steps) gnt_slider_set_value(slider, slider->current + steps * slider->step); void gnt_slider_set_step(GntSlider *slider, int step) void gnt_slider_set_small_step(GntSlider *slider, int step) slider->smallstep = step; void gnt_slider_set_large_step(GntSlider *slider, int step) slider->largestep = step; void gnt_slider_set_range(GntSlider *slider, int max, int min) slider->max = MAX(max, min); slider->min = MIN(max, min); update_label(GntSlider *slider, int current_value, GntLabel *label) g_snprintf(value, sizeof(value), "%d/%d", current_value, slider->max); gnt_label_set_text(label, value); void gnt_slider_reflect_label(GntSlider *slider, GntLabel *label) g_signal_connect(G_OBJECT(slider), "changed", G_CALLBACK(update_label), label);