From c558c5c1b82256fc8c8e9e6f947eda6164ea59e8 Mon Sep 17 00:00:00 2001 From: Richard Moe Gustavsen Date: Tue, 11 Dec 2012 15:12:40 +0100 Subject: iOS: add class QIOSInputContext (to handle keyboard) MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This change will add an initial implementation of the QPlatformInputContext for dealing with the keyboard. Change-Id: I29c1cfbbebb8456977b8a1db0e966973cd2c24a5 Reviewed-by: Tor Arne Vestbø --- src/plugins/platforms/ios/plugin.pro | 6 +- src/plugins/platforms/ios/qiosinputcontext.h | 69 +++++++++++++ src/plugins/platforms/ios/qiosinputcontext.mm | 134 ++++++++++++++++++++++++++ src/plugins/platforms/ios/qiosintegration.h | 2 + src/plugins/platforms/ios/qiosintegration.mm | 7 ++ 5 files changed, 216 insertions(+), 2 deletions(-) create mode 100644 src/plugins/platforms/ios/qiosinputcontext.h create mode 100644 src/plugins/platforms/ios/qiosinputcontext.mm (limited to 'src/plugins') diff --git a/src/plugins/platforms/ios/plugin.pro b/src/plugins/platforms/ios/plugin.pro index 12c5c6db01..d4fe25ef08 100644 --- a/src/plugins/platforms/ios/plugin.pro +++ b/src/plugins/platforms/ios/plugin.pro @@ -16,7 +16,8 @@ OBJECTIVE_SOURCES = \ qiosapplicationdelegate.mm \ qiosorientationlistener.mm \ qiosviewcontroller.mm \ - qioscontext.mm + qioscontext.mm \ + qiosinputcontext.mm HEADERS = \ qiosintegration.h \ @@ -27,6 +28,7 @@ HEADERS = \ qiosapplicationdelegate.h \ qiosorientationlistener.h \ qiosviewcontroller.h \ - qioscontext.h + qioscontext.h \ + qiosinputcontext.h #HEADERS = qiossoftwareinputhandler.h diff --git a/src/plugins/platforms/ios/qiosinputcontext.h b/src/plugins/platforms/ios/qiosinputcontext.h new file mode 100644 index 0000000000..22782d183c --- /dev/null +++ b/src/plugins/platforms/ios/qiosinputcontext.h @@ -0,0 +1,69 @@ +/**************************************************************************** +** +** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies). +** Contact: http://www.qt-project.org/legal +** +** This file is part of the plugins of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** Commercial License Usage +** Licensees holding valid commercial Qt licenses may use this file in +** accordance with the commercial license agreement provided with the +** Software or, alternatively, in accordance with the terms contained in +** a written agreement between you and Digia. For licensing terms and +** conditions see http://qt.digia.com/licensing. For further information +** use the contact form at http://qt.digia.com/contact-us. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 2.1 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 2.1 requirements +** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Digia gives you certain additional +** rights. These rights are described in the Digia Qt LGPL Exception +** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 3.0 as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU General Public License version 3.0 requirements will be +** met: http://www.gnu.org/copyleft/gpl.html. +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#ifndef QIOSINPUTCONTEXT_H +#define QIOSINPUTCONTEXT_H + +#include + +#include + +QT_BEGIN_NAMESPACE + +@class QIOSKeyboardListener; + +class QIOSInputContext : public QPlatformInputContext +{ +public: + QIOSInputContext(); + ~QIOSInputContext(); + + void showInputPanel(); + void hideInputPanel(); + bool isInputPanelVisible() const; + +private: + QIOSKeyboardListener *m_keyboardListener; +}; + +QT_END_NAMESPACE + +#endif diff --git a/src/plugins/platforms/ios/qiosinputcontext.mm b/src/plugins/platforms/ios/qiosinputcontext.mm new file mode 100644 index 0000000000..7937337e4a --- /dev/null +++ b/src/plugins/platforms/ios/qiosinputcontext.mm @@ -0,0 +1,134 @@ +/**************************************************************************** +** +** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies). +** Contact: http://www.qt-project.org/legal +** +** This file is part of the plugins of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** Commercial License Usage +** Licensees holding valid commercial Qt licenses may use this file in +** accordance with the commercial license agreement provided with the +** Software or, alternatively, in accordance with the terms contained in +** a written agreement between you and Digia. For licensing terms and +** conditions see http://qt.digia.com/licensing. For further information +** use the contact form at http://qt.digia.com/contact-us. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 2.1 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 2.1 requirements +** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Digia gives you certain additional +** rights. These rights are described in the Digia Qt LGPL Exception +** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 3.0 as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU General Public License version 3.0 requirements will be +** met: http://www.gnu.org/copyleft/gpl.html. +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "qiosinputcontext.h" +#include "qioswindow.h" +#include + +@interface QIOSKeyboardListener : NSObject { +@public + QIOSInputContext *m_context; + BOOL m_keyboardVisible; +} +@end + +@implementation QIOSKeyboardListener + +- (id)initWithQIOSInputContext:(QIOSInputContext *)context +{ + self = [super init]; + if (self) { + m_context = context; + m_keyboardVisible = NO; + // After the keyboard became undockable (iOS5), UIKeyboardWillShow/UIKeyboardWillHide + // no longer works for all cases. So listen to keyboard frame changes instead: + [[NSNotificationCenter defaultCenter] + addObserver:self + selector:@selector(keyboardDidChangeFrame:) + name:@"UIKeyboardDidChangeFrameNotification" object:nil]; + } + return self; +} + +- (void) dealloc +{ + [[NSNotificationCenter defaultCenter] + removeObserver:self + name:@"UIKeyboardDidChangeFrameNotification" object:nil]; + [super dealloc]; +} + +- (void) keyboardDidChangeFrame:(NSNotification *)notification +{ + CGRect frame; + [[[notification userInfo] objectForKey:UIKeyboardFrameEndUserInfoKey] getValue:&frame]; + BOOL visible = CGRectIntersectsRect(frame, [UIScreen mainScreen].bounds); + if (m_keyboardVisible != visible) { + m_keyboardVisible = visible; + m_context->emitInputPanelVisibleChanged(); + } +} + +@end + +QIOSInputContext::QIOSInputContext() + : QPlatformInputContext(), + m_keyboardListener([[QIOSKeyboardListener alloc] initWithQIOSInputContext:this]) +{ +} + +QIOSInputContext::~QIOSInputContext() +{ + [m_keyboardListener release]; +} + +void QIOSInputContext::showInputPanel() +{ + if (isInputPanelVisible()) + return; + + // Documentation tells that one should call (and recall, if necessary) becomeFirstResponder/resignFirstResponder + // to show/hide the keyboard. This is slightly inconvenient, since there exist no API to get the current first + // responder. Rather than searching for it from the top, we assume that the view backing the focus window in Qt + // is the best candidate as long as there exist no first responder from before (which the isInputPanelVisible + // test on top should catch). Note that Qt will forward keyevents to whichever QObject that needs it, regardless of + // which UIView the input actually came from. So in this respect, we're undermining iOS' responder chain. + if (QWindow *window = QGuiApplication::focusWindow()) { + QIOSWindow *qiosWindow = static_cast(window->handle()); + [qiosWindow->nativeView() becomeFirstResponder]; + } +} + +void QIOSInputContext::hideInputPanel() +{ + if (!isInputPanelVisible()) + return; + + if (QWindow *window = QGuiApplication::focusWindow()) { + QIOSWindow *qiosWindow = static_cast(window->handle()); + [qiosWindow->nativeView() resignFirstResponder]; + } +} + +bool QIOSInputContext::isInputPanelVisible() const +{ + return m_keyboardListener->m_keyboardVisible; +} diff --git a/src/plugins/platforms/ios/qiosintegration.h b/src/plugins/platforms/ios/qiosintegration.h index 363d267716..9e6dadc5a1 100644 --- a/src/plugins/platforms/ios/qiosintegration.h +++ b/src/plugins/platforms/ios/qiosintegration.h @@ -59,6 +59,7 @@ public: QPlatformOpenGLContext *createPlatformOpenGLContext(QOpenGLContext *context) const; QPlatformFontDatabase *fontDatabase() const; + QPlatformInputContext *inputContext() const; QVariant styleHint(StyleHint hint) const; @@ -69,6 +70,7 @@ public: private: QPlatformFontDatabase *m_fontDatabase; + QPlatformInputContext *m_inputContext; QPlatformScreen *m_screen; }; diff --git a/src/plugins/platforms/ios/qiosintegration.mm b/src/plugins/platforms/ios/qiosintegration.mm index b37e803455..9d603da150 100644 --- a/src/plugins/platforms/ios/qiosintegration.mm +++ b/src/plugins/platforms/ios/qiosintegration.mm @@ -45,6 +45,7 @@ #include "qiosscreen.h" #include "qioseventdispatcher.h" #include "qioscontext.h" +#include "qiosinputcontext.h" #include @@ -54,6 +55,7 @@ QT_BEGIN_NAMESPACE QIOSIntegration::QIOSIntegration() : m_fontDatabase(new QCoreTextFontDatabase) + , m_inputContext(new QIOSInputContext) , m_screen(new QIOSScreen(QIOSScreen::MainScreen)) { if (![UIApplication sharedApplication]) { @@ -106,6 +108,11 @@ QPlatformFontDatabase * QIOSIntegration::fontDatabase() const return m_fontDatabase; } +QPlatformInputContext *QIOSIntegration::inputContext() const +{ + return m_inputContext; +} + QVariant QIOSIntegration::styleHint(StyleHint hint) const { switch (hint) { -- cgit v1.2.3