365 lines
8.1 KiB
Go
365 lines
8.1 KiB
Go
// +build !windows,!darwin,!plan9
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// 16 february 2014
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package ui
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import (
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"time"
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)
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// #include "gtk_unix.h"
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import "C"
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type sysData struct {
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cSysData
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widget *C.GtkWidget
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container *C.GtkWidget // for moving
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pulse chan bool // for sysData.progressPulse()
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clickCounter clickCounter // for Areas
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}
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type classData struct {
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make func() *C.GtkWidget
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makeAlt func() *C.GtkWidget
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setText func(widget *C.GtkWidget, text string)
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text func(widget *C.GtkWidget) string
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append func(widget *C.GtkWidget, text string)
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insert func(widget *C.GtkWidget, index int, text string)
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selected func(widget *C.GtkWidget) int
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selMulti func(widget *C.GtkWidget) []int
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smtexts func(widget *C.GtkWidget) []string
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delete func(widget *C.GtkWidget, index int)
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len func(widget *C.GtkWidget) int
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// ...
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signals callbackMap
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child func(widget *C.GtkWidget) *C.GtkWidget
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childsigs callbackMap
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}
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var classTypes = [nctypes]*classData{
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c_window: &classData{
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make: gtk_window_new,
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setText: gtk_window_set_title,
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text: gtk_window_get_title,
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signals: callbackMap{
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"delete-event": window_delete_event_callback,
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"configure-event": window_configure_event_callback,
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},
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},
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c_button: &classData{
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make: gtk_button_new,
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setText: gtk_button_set_label,
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text: gtk_button_get_label,
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signals: callbackMap{
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"clicked": button_clicked_callback,
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},
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},
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c_checkbox: &classData{
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make: gtk_check_button_new,
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setText: gtk_button_set_label,
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text: gtk_button_get_label,
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},
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c_combobox: &classData{
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make: gtk_combo_box_text_new,
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makeAlt: gtk_combo_box_text_new_with_entry,
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text: gtk_combo_box_text_get_active_text,
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append: gtk_combo_box_text_append_text,
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insert: gtk_combo_box_text_insert_text,
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selected: gtk_combo_box_get_active,
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delete: gtk_combo_box_text_remove,
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len: gtkComboBoxLen,
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},
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c_lineedit: &classData{
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make: gtk_entry_new,
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makeAlt: gtkPasswordEntryNew,
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setText: gtk_entry_set_text,
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text: gtk_entry_get_text,
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},
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c_label: &classData{
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make: gtk_label_new,
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setText: gtk_label_set_text,
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text: gtk_label_get_text,
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},
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c_listbox: &classData{
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make: gListboxNewSingle,
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makeAlt: gListboxNewMulti,
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text: gListboxText,
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append: gListboxAppend,
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insert: gListboxInsert,
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selMulti: gListboxSelectedMulti,
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smtexts: gListboxSelMultiTexts,
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delete: gListboxDelete,
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len: gListboxLen,
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},
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c_progressbar: &classData{
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make: gtk_progress_bar_new,
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},
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c_area: &classData{
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make: gtkAreaNew,
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child: gtkAreaGetControl,
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childsigs: callbackMap{
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"draw": area_draw_callback,
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"button-press-event": area_button_press_event_callback,
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"button-release-event": area_button_release_event_callback,
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"motion-notify-event": area_motion_notify_event_callback,
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"focus-in-event": area_focus_event_callback,
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"focus-out-event": area_focus_event_callback,
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"key-press-event": area_key_press_event_callback,
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"key-release-event": area_key_release_event_callback,
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},
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},
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}
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func (s *sysData) make(window *sysData) error {
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ct := classTypes[s.ctype]
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ret := make(chan *C.GtkWidget)
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defer close(ret)
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uitask <- func() {
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if s.alternate {
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ret <- ct.makeAlt()
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return
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}
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ret <- ct.make()
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}
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s.widget = <-ret
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if window == nil {
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uitask <- func() {
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fixed := gtkNewWindowLayout()
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gtk_container_add(s.widget, fixed)
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for signame, sigfunc := range ct.signals {
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g_signal_connect(s.widget, signame, sigfunc, s)
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}
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ret <- fixed
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}
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s.container = <-ret
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} else {
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s.container = window.container
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uitask <- func() {
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gtkAddWidgetToLayout(s.container, s.widget)
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for signame, sigfunc := range ct.signals {
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g_signal_connect(s.widget, signame, sigfunc, s)
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}
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if ct.child != nil {
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child := ct.child(s.widget)
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for signame, sigfunc := range ct.childsigs {
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g_signal_connect(child, signame, sigfunc, s)
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}
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}
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ret <- nil
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}
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<-ret
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}
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return nil
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}
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// used for Windows; nothing special needed elsewhere
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func (s *sysData) firstShow() error {
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s.show()
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return nil
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}
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func (s *sysData) show() {
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ret := make(chan struct{})
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defer close(ret)
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uitask <- func() {
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gtk_widget_show(s.widget)
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ret <- struct{}{}
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}
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<-ret
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}
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func (s *sysData) hide() {
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ret := make(chan struct{})
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defer close(ret)
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uitask <- func() {
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gtk_widget_hide(s.widget)
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ret <- struct{}{}
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}
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<-ret
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}
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func (s *sysData) setText(text string) {
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ret := make(chan struct{})
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defer close(ret)
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uitask <- func() {
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classTypes[s.ctype].setText(s.widget, text)
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ret <- struct{}{}
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}
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<-ret
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}
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func (s *sysData) setRect(x int, y int, width int, height int, winheight int) error {
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gtkMoveWidgetInLayout(s.container, s.widget, x, y)
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gtk_widget_set_size_request(s.widget, width, height)
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return nil
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}
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func (s *sysData) isChecked() bool {
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ret := make(chan bool)
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defer close(ret)
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uitask <- func() {
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ret <- gtk_toggle_button_get_active(s.widget)
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}
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return <-ret
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}
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func (s *sysData) text() string {
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ret := make(chan string)
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defer close(ret)
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uitask <- func() {
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ret <- classTypes[s.ctype].text(s.widget)
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}
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return <-ret
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}
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func (s *sysData) append(what string) {
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ret := make(chan struct{})
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defer close(ret)
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uitask <- func() {
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classTypes[s.ctype].append(s.widget, what)
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ret <- struct{}{}
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}
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<-ret
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}
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func (s *sysData) insertBefore(what string, before int) {
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ret := make(chan struct{})
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defer close(ret)
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uitask <- func() {
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classTypes[s.ctype].insert(s.widget, before, what)
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ret <- struct{}{}
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}
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<-ret
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}
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func (s *sysData) selectedIndex() int {
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ret := make(chan int)
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defer close(ret)
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uitask <- func() {
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ret <- classTypes[s.ctype].selected(s.widget)
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}
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return <-ret
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}
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func (s *sysData) selectedIndices() []int {
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ret := make(chan []int)
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defer close(ret)
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uitask <- func() {
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ret <- classTypes[s.ctype].selMulti(s.widget)
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}
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return <-ret
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}
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func (s *sysData) selectedTexts() []string {
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ret := make(chan []string)
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defer close(ret)
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uitask <- func() {
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ret <- classTypes[s.ctype].smtexts(s.widget)
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}
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return <-ret
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}
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func (s *sysData) setWindowSize(width int, height int) error {
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ret := make(chan struct{})
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defer close(ret)
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uitask <- func() {
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// does not take window geometry into account (and cannot, since the window manager won't give that info away)
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// thanks to TingPing in irc.gimp.net/#gtk+
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gtk_window_resize(s.widget, width, height)
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ret <- struct{}{}
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}
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<-ret
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return nil
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}
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func (s *sysData) delete(index int) {
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ret := make(chan struct{})
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defer close(ret)
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uitask <- func() {
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classTypes[s.ctype].delete(s.widget, index)
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ret <- struct{}{}
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}
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<-ret
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}
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// With GTK+, we must manually pulse the indeterminate progressbar ourselves. This goroutine does that.
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func (s *sysData) progressPulse() {
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pulse := func() {
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ret := make(chan struct{})
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defer close(ret)
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uitask <- func() {
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gtk_progress_bar_pulse(s.widget)
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ret <- struct{}{}
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}
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<-ret
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}
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var ticker *time.Ticker
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var tickchan <-chan time.Time
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// the pulse rate used by Zenity (https://git.gnome.org/browse/zenity/tree/src/progress.c#n69 for blob cbffe08e8337ba1375a0ac7210eff5a2e4313bb8)
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const pulseRate = 100 * time.Millisecond
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for {
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select {
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case start := <-s.pulse:
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if start {
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ticker = time.NewTicker(pulseRate)
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tickchan = ticker.C
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pulse() // start the pulse animation now, not 100ms later
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} else {
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if ticker != nil {
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ticker.Stop()
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}
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ticker = nil
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tickchan = nil
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s.pulse <- true // notify sysData.setProgress()
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}
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case <-tickchan:
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pulse()
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}
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}
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}
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func (s *sysData) setProgress(percent int) {
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if s.pulse == nil {
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s.pulse = make(chan bool)
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go s.progressPulse()
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}
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if percent == -1 {
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s.pulse <- true
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return
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}
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s.pulse <- false
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<-s.pulse // wait for sysData.progressPulse() to register that
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ret := make(chan struct{})
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defer close(ret)
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uitask <- func() {
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gtk_progress_bar_set_fraction(s.widget, percent)
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ret <- struct{}{}
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}
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<-ret
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}
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func (s *sysData) len() int {
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ret := make(chan int)
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defer close(ret)
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uitask <- func() {
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ret <- classTypes[s.ctype].len(s.widget)
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}
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return <-ret
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}
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func (s *sysData) setAreaSize(width int, height int) {
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ret := make(chan struct{})
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defer close(ret)
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uitask <- func() {
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c := gtkAreaGetControl(s.widget)
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gtk_widget_set_size_request(c, width, height)
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ret <- struct{}{}
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}
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<-ret
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}
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