From 9f405f98a4247cd263b9c5d35659a4ba89e282de Mon Sep 17 00:00:00 2001
From: Andre de la Rocha <andre.rocha@qt.io>
Date: Fri, 13 Oct 2017 19:15:42 +0200
Subject: Add virtual keyboard geometry support to Windows port

Overrides keyboardRect() and isInputPanelVisible() in QWindowsInputContext
in order to provide support for virtual keyboard geometry and visibility
information in the Windows platform.

Change-Id: I15382e604dc076929d253c0c1fbe64ea7da853ce
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>
---
 .../platforms/windows/qwindowsinputcontext.cpp     | 22 ++++++++++++++++++++++
 .../platforms/windows/qwindowsinputcontext.h       |  4 ++++
 2 files changed, 26 insertions(+)

(limited to 'src/plugins/platforms/windows')

diff --git a/src/plugins/platforms/windows/qwindowsinputcontext.cpp b/src/plugins/platforms/windows/qwindowsinputcontext.cpp
index 8c228f588e..b9dd2c557e 100644
--- a/src/plugins/platforms/windows/qwindowsinputcontext.cpp
+++ b/src/plugins/platforms/windows/qwindowsinputcontext.cpp
@@ -221,6 +221,28 @@ void QWindowsInputContext::setFocusObject(QObject *)
     updateEnabled();
 }
 
+HWND QWindowsInputContext::getVirtualKeyboardWindowHandle() const
+{
+    return ::FindWindowA("IPTip_Main_Window", nullptr);
+}
+
+QRectF QWindowsInputContext::keyboardRect() const
+{
+    if (HWND hwnd = getVirtualKeyboardWindowHandle()) {
+        RECT rect;
+        if (::GetWindowRect(hwnd, &rect)) {
+            return QRectF(rect.left, rect.top, rect.right - rect.left, rect.bottom - rect.top);
+        }
+    }
+    return QRectF();
+}
+
+bool QWindowsInputContext::isInputPanelVisible() const
+{
+    HWND hwnd = getVirtualKeyboardWindowHandle();
+    return hwnd && ::IsWindowEnabled(hwnd) && ::IsWindowVisible(hwnd);
+}
+
 void QWindowsInputContext::updateEnabled()
 {
     if (!QGuiApplication::focusObject())
diff --git a/src/plugins/platforms/windows/qwindowsinputcontext.h b/src/plugins/platforms/windows/qwindowsinputcontext.h
index 617ef30cef..ada1fc0d29 100644
--- a/src/plugins/platforms/windows/qwindowsinputcontext.h
+++ b/src/plugins/platforms/windows/qwindowsinputcontext.h
@@ -79,6 +79,9 @@ public:
     void invokeAction(QInputMethod::Action, int cursorPosition) override;
     void setFocusObject(QObject *object) override;
 
+    QRectF keyboardRect() const override;
+    bool isInputPanelVisible() const override;
+
     bool startComposition(HWND hwnd);
     bool composition(HWND hwnd, LPARAM lParam);
     bool endComposition(HWND hwnd);
@@ -98,6 +101,7 @@ private:
     void startContextComposition();
     void endContextComposition();
     void updateEnabled();
+    HWND getVirtualKeyboardWindowHandle() const;
 
     const DWORD m_WM_MSIME_MOUSE;
     static HIMC m_defaultContext;
-- 
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