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Bug 1249915 - Add ability to synthesize native touch events on GTK for mochitests. r=karlt

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MozReview-Commit-ID: GurXjryrsle
This commit is contained in:
Kartikaya Gupta 2016-02-23 10:17:46 -05:00
parent 2548d417f5
commit fdf87498df
2 changed files with 91 additions and 0 deletions
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82
widget/gtk/nsWindow.cpp
View File

@ -6843,6 +6843,88 @@ nsWindow::SynthesizeNativeMouseScrollEvent(mozilla::LayoutDeviceIntPoint aPoint,
return NS_OK;
}
#if GTK_CHECK_VERSION(3,4,0)
nsresult
nsWindow::SynthesizeNativeTouchPoint(uint32_t aPointerId,
TouchPointerState aPointerState,
ScreenIntPoint aPointerScreenPoint,
double aPointerPressure,
uint32_t aPointerOrientation,
nsIObserver* aObserver)
{
AutoObserverNotifier notifier(aObserver, "touchpoint");
if (!mGdkWindow) {
return NS_OK;
}
GdkEvent event;
memset(&event, 0, sizeof(GdkEvent));
static std::map<uint32_t, GdkEventSequence*> sKnownPointers;
auto result = sKnownPointers.find(aPointerId);
switch (aPointerState) {
case TOUCH_CONTACT:
if (result == sKnownPointers.end()) {
// GdkEventSequence isn't a thing we can instantiate, and never gets
// dereferenced in the gtk code. It's an opaque pointer, the only
// requirement is that it be distinct from other instances of
// GdkEventSequence*.
event.touch.sequence = (GdkEventSequence*)((uintptr_t)aPointerId);
sKnownPointers[aPointerId] = event.touch.sequence;
event.type = GDK_TOUCH_BEGIN;
} else {
event.touch.sequence = result->second;
event.type = GDK_TOUCH_UPDATE;
}
break;
case TOUCH_REMOVE:
event.type = GDK_TOUCH_END;
if (result == sKnownPointers.end()) {
NS_WARNING("Tried to synthesize touch-end for unknown pointer!");
return NS_ERROR_UNEXPECTED;
}
event.touch.sequence = result->second;
sKnownPointers.erase(result);
break;
case TOUCH_CANCEL:
event.type = GDK_TOUCH_CANCEL;
if (result == sKnownPointers.end()) {
NS_WARNING("Tried to synthesize touch-cancel for unknown pointer!");
return NS_ERROR_UNEXPECTED;
}
event.touch.sequence = result->second;
sKnownPointers.erase(result);
break;
case TOUCH_HOVER:
default:
return NS_ERROR_NOT_IMPLEMENTED;
}
event.touch.window = mGdkWindow;
event.touch.time = GDK_CURRENT_TIME;
GdkDisplay* display = gdk_window_get_display(mGdkWindow);
GdkDeviceManager* device_manager = gdk_display_get_device_manager(display);
event.touch.device = gdk_device_manager_get_client_pointer(device_manager);
event.touch.x_root = DevicePixelsToGdkCoordRoundDown(aPointerScreenPoint.x);
event.touch.y_root = DevicePixelsToGdkCoordRoundDown(aPointerScreenPoint.y);
LayoutDeviceIntPoint pointInWindow =
ViewAs<LayoutDevicePixel>(aPointerScreenPoint,
PixelCastJustification::LayoutDeviceIsScreenForUntransformedEvent)
- WidgetToScreenOffset();
event.touch.x = DevicePixelsToGdkCoordRoundDown(pointInWindow.x);
event.touch.y = DevicePixelsToGdkCoordRoundDown(pointInWindow.y);
gdk_event_put(&event);
return NS_OK;
}
#endif
int32_t
nsWindow::RoundsWidgetCoordinatesTo()
{

9
widget/gtk/nsWindow.h
View File

@ -338,6 +338,15 @@ public:
uint32_t aAdditionalFlags,
nsIObserver* aObserver) override;
#if GTK_CHECK_VERSION(3,4,0)
virtual nsresult SynthesizeNativeTouchPoint(uint32_t aPointerId,
TouchPointerState aPointerState,
ScreenIntPoint aPointerScreenPoint,
double aPointerPressure,
uint32_t aPointerOrientation,
nsIObserver* aObserver) override;
#endif
// HiDPI scale conversion
gint GdkScaleFactor();