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Added custom double-click/triple-click/higher-order click handling to GTK+ Areas.

This commit is contained in:
Pietro Gagliardi 2014-05-23 18:30:08 -04:00
parent b359f995f5
commit dbeccfa922
2 changed files with 25 additions and 6 deletions
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30
area_unix.go
View File

@ -17,6 +17,14 @@ import (
// extern gboolean our_area_motion_notify_event_callback(GtkWidget *, GdkEvent *, gpointer);
// extern gboolean our_area_key_press_event_callback(GtkWidget *, GdkEvent *, gpointer);
// extern gboolean our_area_key_release_event_callback(GtkWidget *, GdkEvent *, gpointer);
// /* because cgo doesn't like ... */
// static inline void gtkGetDoubleClickSettings(GtkSettings *settings, gint *maxTime, gint *maxDistance)
// {
// g_object_get(settings,
// "gtk-double-click-time", maxTime,
// "gtk-double-click-distance", maxDistance,
// NULL);
// }
import "C"
func gtkAreaNew() *C.GtkWidget {
@ -157,14 +165,24 @@ func our_area_button_press_event_callback(widget *C.GtkWidget, event *C.GdkEvent
// GDK button ID == our button ID with some exceptions taken care of by finishMouseEvent()
Down: uint(e.button),
}
switch e._type {
case C.GDK_BUTTON_PRESS:
me.Count = 1
case C.GDK_2BUTTON_PRESS:
me.Count = 2
default: // ignore triple-clicks and beyond; we don't handle those
var maxTime C.gint
var maxDistance C.gint
if e._type != C.GDK_BUTTON_PRESS {
// ignore GDK's generated double-clicks and beyond; we handled those ourselves below
return C.FALSE // TODO really false?
}
s := (*sysData)(unsafe.Pointer(data))
// e.time is unsigned and in milliseconds
// maxTime is also milliseconds; despite being gint, it is only allowed to be positive
// maxDistance is also only allowed to be positive
settings := C.gtk_widget_get_settings(widget)
C.gtkGetDoubleClickSettings(settings, &maxTime, &maxDistance)
me.Count = s.clickCounter.click(me.Down, int(e.x), int(e.y),
uintptr(e.time), uintptr(maxTime),
int(maxDistance), int(maxDistance))
finishMouseEvent(widget, data, me, me.Down, e.x, e.y, e.state, e.window)
return C.FALSE // TODO really false?
}

1
sysdata_unix.go
View File

@ -17,6 +17,7 @@ type sysData struct {
widget *C.GtkWidget
container *C.GtkWidget // for moving
pulse chan bool // for sysData.progressPulse()
clickCounter clickCounter // for Areas
}
type classData struct {