1 files changed, 287 insertions, 0 deletions
diff --git a/sysdata_unix.go b/sysdata_unix.go
new file mode 100644
index 0000000..33f7ef2
--- /dev/null
+++ b/sysdata_unix.go
@@ -0,0 +1,287 @@
+// +build !windows,!darwin,!plan9
+
+// 16 february 2014
+
+package ui
+
+import (
+	"unsafe"
+)
+
+// #include "gtk_unix.h"
+// extern gboolean our_pulse_callback(gpointer);
+import "C"
+
+type sysData struct {
+	cSysData
+
+	widget       *C.GtkWidget
+	container    *C.GtkWidget // for moving
+	pulseTimer	C.guint	// for indeterminate progress bars
+	clickCounter clickCounter // for Areas
+	// we probably don't need to save these, but we'll do so for sysData.preferredSize() just in case
+	areawidth  int
+	areaheight int
+}
+
+type classData struct {
+	make     func() *C.GtkWidget
+	makeAlt  func() *C.GtkWidget
+	setText  func(widget *C.GtkWidget, text string)
+	text     func(widget *C.GtkWidget) string
+	append   func(widget *C.GtkWidget, text string)
+	insert   func(widget *C.GtkWidget, index int, text string)
+	selected func(widget *C.GtkWidget) int
+	selMulti func(widget *C.GtkWidget) []int
+	smtexts  func(widget *C.GtkWidget) []string
+	delete   func(widget *C.GtkWidget, index int)
+	len      func(widget *C.GtkWidget) int
+	// ...
+	signals   callbackMap
+	child     func(widget *C.GtkWidget) *C.GtkWidget
+	childsigs callbackMap
+}
+
+var classTypes = [nctypes]*classData{
+	c_window: &classData{
+		make:    gtk_window_new,
+		setText: gtk_window_set_title,
+		text:    gtk_window_get_title,
+		signals: callbackMap{
+			"delete-event":    window_delete_event_callback,
+			"configure-event": window_configure_event_callback,
+		},
+	},
+	c_button: &classData{
+		make:    gtk_button_new,
+		setText: gtk_button_set_label,
+		text:    gtk_button_get_label,
+		signals: callbackMap{
+			"clicked": button_clicked_callback,
+		},
+	},
+	c_checkbox: &classData{
+		make:    gtk_check_button_new,
+		setText: gtk_button_set_label,
+		text:    gtk_button_get_label,
+	},
+	c_combobox: &classData{
+		make:     gtk_combo_box_text_new,
+		makeAlt:  gtk_combo_box_text_new_with_entry,
+		text:     gtk_combo_box_text_get_active_text,
+		append:   gtk_combo_box_text_append_text,
+		insert:   gtk_combo_box_text_insert_text,
+		selected: gtk_combo_box_get_active,
+		delete:   gtk_combo_box_text_remove,
+		len:      gtkComboBoxLen,
+	},
+	c_lineedit: &classData{
+		make:    gtk_entry_new,
+		makeAlt: gtkPasswordEntryNew,
+		setText: gtk_entry_set_text,
+		text:    gtk_entry_get_text,
+	},
+	c_label: &classData{
+		make:    gtk_label_new,
+		makeAlt:	gtk_label_new_standalone,
+		setText: gtk_label_set_text,
+		text:    gtk_label_get_text,
+	},
+	c_listbox: &classData{
+		make:     gListboxNewSingle,
+		makeAlt:  gListboxNewMulti,
+		text:     gListboxText,
+		append:   gListboxAppend,
+		insert:   gListboxInsert,
+		selMulti: gListboxSelectedMulti,
+		smtexts:  gListboxSelMultiTexts,
+		delete:   gListboxDelete,
+		len:      gListboxLen,
+	},
+	c_progressbar: &classData{
+		make: gtk_progress_bar_new,
+	},
+	c_area: &classData{
+		make:  gtkAreaNew,
+		child: gtkAreaGetControl,
+		childsigs: callbackMap{
+			"draw":                 area_draw_callback,
+			"button-press-event":   area_button_press_event_callback,
+			"button-release-event": area_button_release_event_callback,
+			"motion-notify-event":  area_motion_notify_event_callback,
+			"enter-notify-event":   area_enterleave_notify_event_callback,
+			"leave-notify-event":   area_enterleave_notify_event_callback,
+			"key-press-event":      area_key_press_event_callback,
+			"key-release-event":    area_key_release_event_callback,
+		},
+	},
+}
+
+func (s *sysData) make(window *sysData) error {
+	ct := classTypes[s.ctype]
+	if s.alternate {
+		s.widget = ct.makeAlt()
+	} else {
+		s.widget = ct.make()
+	}
+	if window == nil {
+		fixed := gtkNewWindowLayout()
+		gtk_container_add(s.widget, fixed)
+		for signame, sigfunc := range ct.signals {
+			g_signal_connect(s.widget, signame, sigfunc, s)
+		}
+		s.container = fixed
+	} else {
+		s.container = window.container
+		gtkAddWidgetToLayout(s.container, s.widget)
+		for signame, sigfunc := range ct.signals {
+			g_signal_connect(s.widget, signame, sigfunc, s)
+		}
+		if ct.child != nil {
+			child := ct.child(s.widget)
+			for signame, sigfunc := range ct.childsigs {
+				g_signal_connect(child, signame, sigfunc, s)
+			}
+		}
+	}
+	return nil
+}
+
+// see sysData.center()
+func (s *sysData) resetposition() {
+	C.gtk_window_set_position(togtkwindow(s.widget), C.GTK_WIN_POS_NONE)
+}
+
+// used for Windows; nothing special needed elsewhere
+func (s *sysData) firstShow() error {
+	s.show()
+	return nil
+}
+
+func (s *sysData) show() {
+	gtk_widget_show(s.widget)
+	s.resetposition()
+}
+
+func (s *sysData) hide() {
+	gtk_widget_hide(s.widget)
+	s.resetposition()
+}
+
+func (s *sysData) setText(text string) {
+	classTypes[s.ctype].setText(s.widget, text)
+}
+
+func (s *sysData) setRect(x int, y int, width int, height int, winheight int) error {
+	gtkMoveWidgetInLayout(s.container, s.widget, x, y)
+	gtk_widget_set_size_request(s.widget, width, height)
+	return nil
+}
+
+func (s *sysData) isChecked() bool {
+	return gtk_toggle_button_get_active(s.widget)
+}
+
+func (s *sysData) text() string {
+	return classTypes[s.ctype].text(s.widget)
+}
+
+func (s *sysData) append(what string) {
+	classTypes[s.ctype].append(s.widget, what)
+}
+
+func (s *sysData) insertBefore(what string, before int) {
+	classTypes[s.ctype].insert(s.widget, before, what)
+}
+
+func (s *sysData) selectedIndex() int {
+	return classTypes[s.ctype].selected(s.widget)
+}
+
+func (s *sysData) selectedIndices() []int {
+	return classTypes[s.ctype].selMulti(s.widget)
+}
+
+func (s *sysData) selectedTexts() []string {
+	return classTypes[s.ctype].smtexts(s.widget)
+}
+
+func (s *sysData) setWindowSize(width int, height int) error {
+	// does not take window geometry into account (and cannot, since the window manager won't give that info away)
+	// thanks to TingPing in irc.gimp.net/#gtk+
+	gtk_window_resize(s.widget, width, height)
+	return nil
+}
+
+func (s *sysData) delete(index int) {
+	classTypes[s.ctype].delete(s.widget, index)
+}
+
+// With GTK+, we must manually pulse the indeterminate progressbar ourselves.
+// To ensure pulsing runs on the main lop and doesn't cause any other weird racy things, we'll use g_timeout_add().
+// Zenity 3.4 does this too (https://git.gnome.org/browse/zenity/tree/src/progress.c?id=3.4.0).
+// The following is Zenity 3.4's pulse rate.
+const pulseRate = 100	// in milliseconds
+
+//export our_pulse_callback
+func our_pulse_callback(data C.gpointer) C.gboolean {
+	// TODO this can be called when closing the window
+	s := (*sysData)(unsafe.Pointer(data))
+	gtk_progress_bar_pulse(s.widget)
+	return C.TRUE		// continue processing
+}
+
+func (s *sysData) setProgress(percent int) {
+	if s.pulseTimer != 0 {		// kill current timer
+		// TODO only if not indeterminate already?
+		C.g_source_remove(s.pulseTimer)
+		s.pulseTimer = 0
+	}
+	if percent == -1 {
+		gtk_progress_bar_pulse(s.widget)		// start animation now
+		s.pulseTimer = C.g_timeout_add(pulseRate,
+			C.GSourceFunc(C.our_pulse_callback),
+			C.gpointer(unsafe.Pointer(s)))
+		return
+	}
+	gtk_progress_bar_set_fraction(s.widget, percent)
+}
+
+func (s *sysData) len() int {
+	return classTypes[s.ctype].len(s.widget)
+}
+
+func (s *sysData) setAreaSize(width int, height int) {
+	c := gtkAreaGetControl(s.widget)
+	gtk_widget_set_size_request(c, width, height)
+	s.areawidth = width // for sysData.preferredSize()
+	s.areaheight = height
+	C.gtk_widget_queue_draw(c)
+}
+
+// TODO should this be made safe? (TODO move to area.go)
+func (s *sysData) repaintAll() {
+	c := gtkAreaGetControl(s.widget)
+	C.gtk_widget_queue_draw(c)
+}
+
+func (s *sysData) center() {
+	if C.gtk_widget_get_visible(s.widget) == C.FALSE {
+		// hint to the WM to make it centered when it is shown again
+		// thanks to Jasper in irc.gimp.net/#gtk+
+		C.gtk_window_set_position(togtkwindow(s.widget), C.GTK_WIN_POS_CENTER)
+	} else {
+		var width, height C.gint
+
+		s.resetposition()
+		//we should be able to use gravity to simplify this, but it doesn't take effect immediately, and adding show calls does nothing (thanks Jasper in irc.gimp.net/#gtk+)
+		C.gtk_window_get_size(togtkwindow(s.widget), &width, &height)
+		C.gtk_window_move(togtkwindow(s.widget),
+			(C.gdk_screen_width() / 2) - (width / 2),
+			(C.gdk_screen_height() / 2) - (width / 2))
+	}
+}
+
+func (s *sysData) setChecked(checked bool) {
+	gtk_toggle_button_set_active(s.widget, checked)
+}