From bb3cb7dcc1ac9a4a4686554469be8aedae345019 Mon Sep 17 00:00:00 2001 From: daleclack Date: Sun, 31 Jan 2021 13:52:18 +0800 Subject: [PATCH] Add test.c --- Gtk3/test.c | 212 ++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 212 insertions(+) create mode 100644 Gtk3/test.c diff --git a/Gtk3/test.c b/Gtk3/test.c new file mode 100644 index 0000000..ee32c29 --- /dev/null +++ b/Gtk3/test.c @@ -0,0 +1,212 @@ +#include +GtkWidget *hscale, *vscale; +void cb_pos_menu_select( GtkWidget *item, GtkPositionType pos ) +{ +/* 设置两个比例构件的比例值的显示位置 */ + gtk_scale_set_value_pos (GTK_SCALE (hscale), pos); + gtk_scale_set_value_pos (GTK_SCALE (vscale), pos); +} +void cb_update_menu_select( GtkWidget *item, GtkUpdateType policy ) +{ +/* 设置两个比例构件的更新方式 */ + gtk_range_set_update_policy (GTK_RANGE (hscale), policy); + gtk_range_set_update_policy (GTK_RANGE (vscale), policy); +} +void cb_digits_scale( GtkAdjustment *adj ) +{ +/* 设置 adj->value 圆整的小数位数 */ + gtk_scale_set_digits (GTK_SCALE (hscale), (gint) adj->value); + gtk_scale_set_digits (GTK_SCALE (vscale), (gint) adj->value); +} +void cb_page_size( GtkAdjustment *get, GtkAdjustment *set ) +{ +/* 将示例调整对象的 page size 和 page increment size 设置 +* 为"Page Size"比例构件指定的值 */ + set->page_size = get->value; + set->page_increment = get->value; +/* 设置调整对象的值并使它引发一个 "changed" 信号,以重新配置所有 +* 已经连接到这个调整对象的构件。 */ + gtk_adjustment_set_value (set, CLAMP (set->value, + set->lower, (set->upper - set->page_size))); +} +void cb_draw_value( GtkToggleButton *button ) +{ +/* 根据复选按钮的状态设置在比例构件上是否显示比例值 */ + gtk_scale_set_draw_value (GTK_SCALE (hscale), button->active); + gtk_scale_set_draw_value (GTK_SCALE (vscale), button->active); +} +/* 方便的函数 */ +GtkWidget *make_menu_item (gchar *name, GCallback callback, gpointer data) +{ + GtkWidget *item; + item = gtk_menu_item_new_with_label (name); + g_signal_connect (G_OBJECT (item), "activate", callback, data); + gtk_widget_show (item); + return item; +} +void scale_set_default_values( GtkScale *scale ) +{ + gtk_range_set_update_policy (GTK_RANGE (scale), + GTK_UPDATE_CONTINUOUS); + gtk_scale_set_digits (scale, 1); + gtk_scale_set_value_pos (scale, GTK_POS_TOP); + gtk_scale_set_draw_value (scale, TRUE); +} +/* 创建示例窗口 */ +void create_range_controls( void ) +{ + GtkWidget *window; + GtkWidget *box1, *box2, *box3; + GtkWidget *button; + GtkWidget *scrollbar; + GtkWidget *separator; + GtkWidget *opt, *menu, *item; + GtkWidget *label; + GtkWidget *scale; + GtkObject *adj1, *adj2; +/* 标准的创建窗口代码 */ + window = gtk_window_new (GTK_WINDOW_TOPLEVEL); + g_signal_connect (G_OBJECT (window), "destroy", G_CALLBACK (gtk_main_quit), NULL); + gtk_window_set_title (GTK_WINDOW (window), "RT's range controls"); + box1 = gtk_vbox_new (FALSE, 0); + gtk_container_add (GTK_CONTAINER (window), box1); + gtk_widget_show (box1); + box2 = gtk_hbox_new (FALSE, 10); + gtk_container_set_border_width (GTK_CONTAINER (box2), 10); + gtk_box_pack_start (GTK_BOX (box1), box2, TRUE, TRUE, 0); + gtk_widget_show (box2); +/* value, lower, upper, step_increment, page_increment, page_size */ +/* 注意,page_size 值只对滚动条构件有区别,并且,你实际上能取得的最高值 +* 是(upper - page_size)。 */ + adj1 = gtk_adjustment_new (0.0, 0.0, 101.0, 0.1, 1.0, 1.0); + vscale = gtk_vscale_new (GTK_ADJUSTMENT (adj1)); + scale_set_default_values (GTK_SCALE (vscale)); + gtk_box_pack_start (GTK_BOX (box2), vscale, TRUE, TRUE, 0); + gtk_widget_show (vscale); + box3 = gtk_vbox_new (FALSE, 10); + gtk_box_pack_start (GTK_BOX (box2), box3, TRUE, TRUE, 0); + gtk_widget_show (box3); +/* 重新使用同一个调整对象 */ + hscale = gtk_hscale_new (GTK_ADJUSTMENT (adj1)); + gtk_widget_set_size_request (GTK_WIDGET (hscale), 200, -1); + scale_set_default_values (GTK_SCALE (hscale)); + gtk_box_pack_start (GTK_BOX (box3), hscale, TRUE, TRUE, 0); + gtk_widget_show (hscale); +/* 再次重用同一个调整对象 */ + scrollbar = gtk_hscrollbar_new (GTK_ADJUSTMENT (adj1)); +/* 注意,这导致当滚动条移动时,比例构件总是连续更新 */ + gtk_range_set_update_policy (GTK_RANGE (scrollbar), + GTK_UPDATE_CONTINUOUS); + gtk_box_pack_start (GTK_BOX (box3), scrollbar, TRUE, TRUE, 0); + gtk_widget_show (scrollbar); + box2 = gtk_hbox_new (FALSE, 10); + gtk_container_set_border_width (GTK_CONTAINER (box2), 10); + gtk_box_pack_start (GTK_BOX (box1), box2, TRUE, TRUE, 0); + gtk_widget_show (box2); +/* 用一个复选按钮控制是否显示比例构件的值 */ + button = gtk_check_button_new_with_label("Display value on scale widgets"); + gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (button), TRUE); + g_signal_connect (G_OBJECT (button), "toggled", + G_CALLBACK (cb_draw_value), NULL); + gtk_box_pack_start (GTK_BOX (box2), button, TRUE, TRUE, 0); + gtk_widget_show (button); + box2 = gtk_hbox_new (FALSE, 10); + gtk_container_set_border_width (GTK_CONTAINER (box2), 10); +/* 用一个选项菜单以改变显示值的位置 */ + label = gtk_label_new ("Scale Value Position:"); + gtk_box_pack_start (GTK_BOX (box2), label, FALSE, FALSE, 0); + gtk_widget_show (label); + opt = gtk_option_menu_new (); + menu = gtk_menu_new (); + item = make_menu_item ("Top", G_CALLBACK (cb_pos_menu_select), + GINT_TO_POINTER (GTK_POS_TOP)); + gtk_menu_shell_append (GTK_MENU_SHELL (menu), item); + item = make_menu_item ("Bottom", G_CALLBACK (cb_pos_menu_select), + GINT_TO_POINTER (GTK_POS_BOTTOM)); + gtk_menu_shell_append (GTK_MENU_SHELL (menu), item); + item = make_menu_item ("Left", G_CALLBACK (cb_pos_menu_select), + GINT_TO_POINTER (GTK_POS_LEFT)); + gtk_menu_shell_append (GTK_MENU_SHELL (menu), item); + item = make_menu_item ("Right", G_CALLBACK (cb_pos_menu_select), + GINT_TO_POINTER (GTK_POS_RIGHT)); + gtk_menu_shell_append (GTK_MENU_SHELL (menu), item); + gtk_option_menu_set_menu (GTK_OPTION_MENU (opt), menu); + gtk_box_pack_start (GTK_BOX (box2), opt, TRUE, TRUE, 0); + gtk_widget_show (opt); + gtk_box_pack_start (GTK_BOX (box1), box2, TRUE, TRUE, 0); + gtk_widget_show (box2); + box2 = gtk_hbox_new (FALSE, 10); + gtk_container_set_border_width (GTK_CONTAINER (box2), 10); +/* 另一个选项菜单,这里是用于设置比例构件的更新方式 */ + label = gtk_label_new ("Scale Update Policy:"); + gtk_box_pack_start (GTK_BOX (box2), label, FALSE, FALSE, 0); + gtk_widget_show (label); + opt = gtk_option_menu_new (); + menu = gtk_menu_new (); + item = make_menu_item ("Continuous", G_CALLBACK (cb_update_menu_select), + GINT_TO_POINTER (GTK_UPDATE_CONTINUOUS)); + gtk_menu_shell_append (GTK_MENU_SHELL (menu), item); + item = make_menu_item ("Discontinuous", G_CALLBACK (cb_update_menu_select), + GINT_TO_POINTER (GTK_UPDATE_DISCONTINUOUS)); + gtk_menu_shell_append (GTK_MENU_SHELL (menu), item); + item = make_menu_item ("Delayed", G_CALLBACK (cb_update_menu_select), + GINT_TO_POINTER (GTK_UPDATE_DELAYED)); + gtk_menu_shell_append (GTK_MENU_SHELL (menu), item); + gtk_option_menu_set_menu (GTK_OPTION_MENU (opt), menu); + gtk_box_pack_start (GTK_BOX (box2), opt, TRUE, TRUE, 0); + gtk_widget_show (opt); + gtk_box_pack_start (GTK_BOX (box1), box2, TRUE, TRUE, 0); + gtk_widget_show (box2); + box2 = gtk_hbox_new (FALSE, 10); + gtk_container_set_border_width (GTK_CONTAINER (box2), 10); +/* 一个水平比例构件,用于调整示例比例构件的显示小数位数。 */ + label = gtk_label_new ("Scale Digits:"); + gtk_box_pack_start (GTK_BOX (box2), label, FALSE, FALSE, 0); + gtk_widget_show (label); + adj2 = gtk_adjustment_new (1.0, 0.0, 5.0, 1.0, 1.0, 0.0); + g_signal_connect (G_OBJECT (adj2), "value_changed", + G_CALLBACK (cb_digits_scale), NULL); + scale = gtk_hscale_new (GTK_ADJUSTMENT (adj2)); + gtk_scale_set_digits (GTK_SCALE (scale), 0); + gtk_box_pack_start (GTK_BOX (box2), scale, TRUE, TRUE, 0); + gtk_widget_show (scale); + gtk_box_pack_start (GTK_BOX (box1), box2, TRUE, TRUE, 0); + gtk_widget_show (box2); + box2 = gtk_hbox_new (FALSE, 10); + gtk_container_set_border_width (GTK_CONTAINER (box2), 10); +/* 以及,最后一个水平比例构件用于调整滚动条的 page size。 */ + label = gtk_label_new ("Scrollbar Page Size:"); + gtk_box_pack_start (GTK_BOX (box2), label, FALSE, FALSE, 0); + gtk_widget_show (label); + adj2 = gtk_adjustment_new (1.0, 1.0, 101.0, 1.0, 1.0, 0.0); + g_signal_connect (G_OBJECT (adj2), "value_changed", + G_CALLBACK (cb_page_size), adj1); + scale = gtk_hscale_new (GTK_ADJUSTMENT (adj2)); + gtk_scale_set_digits (GTK_SCALE (scale), 0); + gtk_box_pack_start (GTK_BOX (box2), scale, TRUE, TRUE, 0); + gtk_widget_show (scale); + gtk_box_pack_start (GTK_BOX (box1), box2, TRUE, TRUE, 0); + gtk_widget_show (box2); + separator = gtk_hseparator_new (); + gtk_box_pack_start (GTK_BOX (box1), separator, FALSE, TRUE, 0); + gtk_widget_show (separator); + box2 = gtk_vbox_new (FALSE, 10); + gtk_container_set_border_width (GTK_CONTAINER (box2), 10); + gtk_box_pack_start (GTK_BOX (box1), box2, FALSE, TRUE, 0); + gtk_widget_show (box2); + button = gtk_button_new_with_label ("Quit"); + g_signal_connect_swapped (G_OBJECT (button), "clicked", + G_CALLBACK (gtk_main_quit), NULL); + gtk_box_pack_start (GTK_BOX (box2), button, TRUE, TRUE, 0); + GTK_WIDGET_SET_FLAGS (button, GTK_CAN_DEFAULT); + gtk_widget_grab_default (button); + gtk_widget_show (button); + gtk_widget_show (window); +} +int main( int argc, char *argv[] ) +{ + gtk_init (&argc, &argv); + create_range_controls (); + gtk_main (); + return 0; +}