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/*
* This file is part of the theme implementation for form controls in WebCore.
*
* Copyright (C) 2015 The Qt Company Ltd.
* Copyright (C) 2011-2012 Nokia Corporation and/or its subsidiary(-ies).
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
*/
#include "config.h"
#include "QStyleFacadeImp.h"
#include <QApplication>
#include <QLineEdit>
#include <QPainter>
#include <QPushButton>
#include <QStyleFactory>
#include <QStyleOption>
#include <QWebPageAdapter.h>
#include <QWebPageClient.h>
using namespace WebCore;
namespace WebKit {
static QStyle::State convertToQStyleState(QStyleFacade::State state)
{
QStyle::State result;
#define CONVERT_STATE(ProxiedState, Value) \
if (state & QStyleFacade::ProxiedState) \
result |= QStyle::ProxiedState;
FOR_EACH_MAPPED_STATE(CONVERT_STATE, )
#undef CONVERT_STATE
return result;
}
static QStyle::SubControl convertToQStyleSubControl(QStyleFacade::SubControl sc)
{
#define CONVERT_SUBCONTROL(F, Value) \
case QStyleFacade::F: return QStyle::F
switch (sc) {
FOR_EACH_SUBCONTROL(CONVERT_SUBCONTROL, SEMICOLON);
}
ASSERT_NOT_REACHED();
return QStyle::SC_None;
#undef CONVERT_SUBCONTROL
}
static void initGenericStyleOption(QStyleOption* option, QWidget* widget, const QStyleFacadeOption& facadeOption)
{
if (widget)
option->init(widget);
else
// If a widget is not directly available for rendering, we fallback to default
// value for an active widget.
option->state = QStyle::State_Active | QStyle::State_Enabled;
option->rect = facadeOption.rect;
option->state = convertToQStyleState(facadeOption.state);
if (facadeOption.direction != Qt::LayoutDirectionAuto)
option->direction = facadeOption.direction;
option->palette = facadeOption.palette;
}
static void initSpecificStyleOption(QStyleOption*, const QStyleFacadeOption&)
{
}
static void initSpecificStyleOption(QStyleOptionSlider* sliderOption, const QStyleFacadeOption& facadeOption)
{
sliderOption->orientation = facadeOption.slider.orientation;
sliderOption->upsideDown = facadeOption.slider.upsideDown;
sliderOption->minimum = facadeOption.slider.minimum;
sliderOption->maximum = facadeOption.slider.maximum;
sliderOption->sliderPosition = facadeOption.slider.position;
sliderOption->sliderValue = facadeOption.slider.value;
sliderOption->singleStep = facadeOption.slider.singleStep;
sliderOption->pageStep = facadeOption.slider.pageStep;
sliderOption->activeSubControls = convertToQStyleSubControl(facadeOption.slider.activeSubControls);
}
template <typename StyleOption>
class MappedStyleOption : public StyleOption {
public:
MappedStyleOption(QWidget* widget, const QStyleFacadeOption& facadeOption)
{
initGenericStyleOption(this, widget, facadeOption);
initSpecificStyleOption(this, facadeOption);
}
};
static QStyle::PixelMetric convertPixelMetric(QStyleFacade::PixelMetric state)
{
#define CONVERT_METRIC(Metric) \
case QStyleFacade::Metric: return QStyle::Metric
switch (state) {
FOR_EACH_MAPPED_METRIC(CONVERT_METRIC, SEMICOLON);
}
ASSERT_NOT_REACHED();
return QStyle::PM_CustomBase;
#undef CONVERT_METRIC
}
static QStyleFacade::SubControl convertToQStyleFacadeSubControl(QStyle::SubControl sc)
{
#define CONVERT_SUBCONTROL(F, Value) \
case QStyle::F: return QStyleFacade::F
switch (sc) {
FOR_EACH_SUBCONTROL(CONVERT_SUBCONTROL, SEMICOLON);
}
ASSERT_NOT_REACHED();
return QStyleFacade::SC_None;
#undef CONVERT_SUBCONTROL
}
QStyleFacadeImp::QStyleFacadeImp(QWebPageAdapter* page)
: m_page(page)
, m_style(0)
{
m_fallbackStyle = QStyleFactory::create(QLatin1String("windows"));
m_ownFallbackStyle = true;
if (!m_fallbackStyle) {
m_fallbackStyle = QApplication::style();
m_ownFallbackStyle = false;
}
}
QStyleFacadeImp::~QStyleFacadeImp()
{
if (m_ownFallbackStyle)
delete m_fallbackStyle;
}
QRect QStyleFacadeImp::buttonSubElementRect(QStyleFacade::ButtonSubElement buttonElement, State state, const QRect& originalRect) const
{
QStyleOptionButton option;
option.state = convertToQStyleState(state);
option.rect = originalRect;
QStyle::SubElement subElement = QStyle::SE_CustomBase;
switch (buttonElement) {
case CheckBoxIndicator: subElement = QStyle::SE_CheckBoxIndicator; break;
case RadioButtonIndicator: subElement = QStyle::SE_RadioButtonIndicator; break;
case PushButtonLayoutItem: subElement = QStyle::SE_PushButtonLayoutItem; break;
case PushButtonContents: subElement = QStyle::SE_PushButtonContents; break;
default: ASSERT_NOT_REACHED();
}
return style()->subElementRect(subElement, &option);
}
int QStyleFacadeImp::findFrameLineWidth() const
{
if (!m_lineEdit)
m_lineEdit.reset(new QLineEdit());
return style()->pixelMetric(QStyle::PM_DefaultFrameWidth, 0, m_lineEdit.data());
}
int QStyleFacadeImp::simplePixelMetric(QStyleFacade::PixelMetric metric, State state) const
{
QStyleOption opt;
opt.state = convertToQStyleState(state);
return style()->pixelMetric(convertPixelMetric(metric), &opt, 0);
}
int QStyleFacadeImp::buttonMargin(State state, const QRect& originalRect) const
{
QStyleOptionButton styleOption;
styleOption.state = convertToQStyleState(state);
styleOption.rect = originalRect;
return style()->pixelMetric(QStyle::PM_ButtonMargin, &styleOption, 0);
}
int QStyleFacadeImp::sliderLength(Qt::Orientation orientation) const
{
QStyleOptionSlider opt;
opt.orientation = orientation;
return style()->pixelMetric(QStyle::PM_SliderLength, &opt);
}
int QStyleFacadeImp::sliderThickness(Qt::Orientation orientation) const
{
QStyleOptionSlider opt;
opt.orientation = orientation;
return style()->pixelMetric(QStyle::PM_SliderThickness, &opt);
}
int QStyleFacadeImp::progressBarChunkWidth(const QSize& size) const
{
QStyleOptionProgressBar option;
option.rect.setSize(size);
// FIXME: Until http://bugreports.qt.nokia.com/browse/QTBUG-9171 is fixed,
// we simulate one square animating across the progress bar.
return style()->pixelMetric(QStyle::PM_ProgressBarChunkWidth, &option);
}
void QStyleFacadeImp::getButtonMetrics(QString *buttonFontFamily, int *buttonFontPixelSize) const
{
QPushButton button;
QFont defaultButtonFont = QApplication::font(&button);
*buttonFontFamily = defaultButtonFont.family();
*buttonFontPixelSize = 0;
#ifdef Q_OS_MAC
button.setAttribute(Qt::WA_MacSmallSize);
QFontInfo fontInfo(defaultButtonFont);
*buttonFontPixelSize = fontInfo.pixelSize();
#endif
}
QSize QStyleFacadeImp::comboBoxSizeFromContents(State state, const QSize& contentsSize) const
{
QStyleOptionComboBox opt;
opt.state = convertToQStyleState(state);
return style()->sizeFromContents(QStyle::CT_ComboBox, &opt, contentsSize);
}
QSize QStyleFacadeImp::pushButtonSizeFromContents(State state, const QSize& contentsSize) const
{
QStyleOptionButton opt;
opt.state = convertToQStyleState(state);
return style()->sizeFromContents(QStyle::CT_PushButton, &opt, contentsSize);
}
void QStyleFacadeImp::paintButton(QPainter* painter, QStyleFacade::ButtonType type, const QStyleFacadeOption &proxyOption)
{
QWidget* widget = qobject_cast<QWidget*>(widgetForPainter(painter));
MappedStyleOption<QStyleOptionButton> option(widget, proxyOption);
if (option.styleObject)
option.styleObject->setProperty("_q_no_animation", true);
if (type == PushButton)
style()->drawControl(QStyle::CE_PushButton, &option, painter, widget);
else if (type == RadioButton)
style()->drawControl(QStyle::CE_RadioButton, &option, painter, widget);
else if (type == CheckBox)
style()->drawControl(QStyle::CE_CheckBox, &option, painter, widget);
}
void QStyleFacadeImp::paintTextField(QPainter *painter, const QStyleFacadeOption &proxyOption)
{
QWidget* widget = qobject_cast<QWidget*>(widgetForPainter(painter));
MappedStyleOption<QStyleOptionFrame> panel(widget, proxyOption);
panel.lineWidth = findFrameLineWidth();
panel.features = QStyleOptionFrame::None;
style()->drawPrimitive(QStyle::PE_PanelLineEdit, &panel, painter, widget);
}
void QStyleFacadeImp::paintComboBox(QPainter *painter, const QStyleFacadeOption &proxyOption)
{
QWidget* widget = qobject_cast<QWidget*>(widgetForPainter(painter));
MappedStyleOption<QStyleOptionComboBox> opt(widget, proxyOption);
QRect rect = opt.rect;
#if defined(Q_OS_MAC) && !defined(QT_NO_STYLE_MAC)
// QMacStyle makes the combo boxes a little bit smaller to leave space for the focus rect.
// Because of it, the combo button is drawn at a point to the left of where it was expect to be and may end up
// overlapped with the text. This will force QMacStyle to draw the combo box with the expected width.
if (m_style->inherits("QMacStyle")) {
rect.setX(rect.x() - 3);
rect.setWidth(rect.width() + 2 * 3);
}
#endif
painter->translate(rect.topLeft());
opt.rect.moveTo(QPoint(0, 0));
opt.rect.setSize(rect.size());
style()->drawComplexControl(QStyle::CC_ComboBox, &opt, painter, widget);
painter->translate(-rect.topLeft());
}
void QStyleFacadeImp::paintComboBoxArrow(QPainter *painter, const QStyleFacadeOption &proxyOption)
{
QWidget* widget = qobject_cast<QWidget*>(widgetForPainter(painter));
MappedStyleOption<QStyleOptionComboBox> opt(widget, proxyOption);
opt.subControls = QStyle::SC_ComboBoxArrow;
// for drawing the combo box arrow, rely only on the fallback style
m_fallbackStyle->drawComplexControl(QStyle::CC_ComboBox, &opt, painter, widget);
}
void QStyleFacadeImp::paintSliderTrack(QPainter* painter, const QStyleFacadeOption& proxyOption)
{
QWidget* widget = qobject_cast<QWidget*>(widgetForPainter(painter));
MappedStyleOption<QStyleOptionSlider> option(widget, proxyOption);
option.subControls = QStyle::SC_SliderGroove;
option.upsideDown = proxyOption.slider.upsideDown;
option.minimum = proxyOption.slider.minimum;
option.maximum = proxyOption.slider.maximum;
option.sliderPosition = proxyOption.slider.position;
option.orientation = proxyOption.slider.orientation;
style()->drawComplexControl(QStyle::CC_Slider, &option, painter, widget);
if (option.state & QStyle::State_HasFocus) {
QStyleOptionFocusRect focusOption;
focusOption.rect = option.rect;
style()->drawPrimitive(QStyle::PE_FrameFocusRect, &focusOption, painter, widget);
}
}
void QStyleFacadeImp::paintSliderThumb(QPainter* painter, const QStyleFacadeOption& proxyOption)
{
QWidget* widget = qobject_cast<QWidget*>(widgetForPainter(painter));
MappedStyleOption<QStyleOptionSlider> option(widget, proxyOption);
option.subControls = QStyle::SC_SliderHandle;
if (option.state & QStyle::State_Sunken)
option.activeSubControls = QStyle::SC_SliderHandle;
style()->drawComplexControl(QStyle::CC_Slider, &option, painter, widget);
}
void QStyleFacadeImp::paintInnerSpinButton(QPainter* painter, const QStyleFacadeOption& proxyOption, bool spinBoxUp)
{
QWidget* widget = qobject_cast<QWidget*>(widgetForPainter(painter));
MappedStyleOption<QStyleOptionSpinBox> option(widget, proxyOption);
option.subControls = QStyle::SC_SpinBoxUp | QStyle::SC_SpinBoxDown;
if (!(option.state & QStyle::State_ReadOnly)) {
if (option.state & QStyle::State_Enabled)
option.stepEnabled = QAbstractSpinBox::StepUpEnabled | QAbstractSpinBox::StepDownEnabled;
if (option.state & QStyle::State_Sunken) {
if (spinBoxUp)
option.activeSubControls = QStyle::SC_SpinBoxUp;
else
option.activeSubControls = QStyle::SC_SpinBoxDown;
}
}
QRect buttonRect = option.rect;
// Default to moving the buttons a little bit within the editor frame.
int inflateX = -2;
int inflateY = -2;
#if defined(Q_OS_MAC) && !defined(QT_NO_STYLE_MAC)
// QMacStyle will position the aqua buttons flush to the right.
// This will move them more within the control for better style, a la
// Chromium look & feel.
if (m_style->inherits("QMacStyle")) {
inflateX = -4;
// Render mini aqua spin buttons for QMacStyle to fit nicely into
// the editor area, like Chromium.
option.state |= QStyle::State_Mini;
}
#endif
buttonRect.setX(buttonRect.x() - inflateX);
buttonRect.setWidth(buttonRect.width() + 2 * inflateX);
buttonRect.setY(buttonRect.y() - inflateY);
buttonRect.setHeight(buttonRect.height() + 2 * inflateY);
option.rect = buttonRect;
style()->drawComplexControl(QStyle::CC_SpinBox, &option, painter, widget);
}
void QStyleFacadeImp::paintProgressBar(QPainter* painter, const QStyleFacadeOption& proxyOption, double progress, double animationProgress)
{
QWidget* widget = qobject_cast<QWidget*>(widgetForPainter(painter));
MappedStyleOption<QStyleOptionProgressBar> option(widget, proxyOption);
option.maximum = std::numeric_limits<int>::max();
option.minimum = 0;
option.progress = progress * std::numeric_limits<int>::max();
const QPoint topLeft = option.rect.topLeft();
painter->translate(topLeft);
option.rect.moveTo(QPoint(0, 0));
if (progress < 0) {
// FIXME: Until http://bugreports.qt.nokia.com/browse/QTBUG-9171 is fixed,
// we simulate one square animating across the progress bar.
style()->drawControl(QStyle::CE_ProgressBarGroove, &option, painter, widget);
int chunkWidth = style()->pixelMetric(QStyle::PM_ProgressBarChunkWidth, &option);
QColor color = (option.palette.highlight() == option.palette.background()) ? option.palette.color(QPalette::Active, QPalette::Highlight) : option.palette.color(QPalette::Highlight);
if (option.direction == Qt::RightToLeft)
painter->fillRect(option.rect.right() - chunkWidth - animationProgress * option.rect.width(), 0, chunkWidth, option.rect.height(), color);
else
painter->fillRect(animationProgress * option.rect.width(), 0, chunkWidth, option.rect.height(), color);
} else
style()->drawControl(QStyle::CE_ProgressBar, &option, painter, widget);
painter->translate(-topLeft);
}
int QStyleFacadeImp::scrollBarExtent(bool mini)
{
QStyleOptionSlider o;
o.orientation = Qt::Vertical;
o.state &= ~QStyle::State_Horizontal;
if (mini)
o.state |= QStyle::State_Mini;
return style()->pixelMetric(QStyle::PM_ScrollBarExtent, &o, 0);
}
bool QStyleFacadeImp::scrollBarMiddleClickAbsolutePositionStyleHint() const
{
return style()->styleHint(QStyle::SH_ScrollBar_MiddleClickAbsolutePosition);
}
void QStyleFacadeImp::paintScrollCorner(QPainter* painter, const QRect& rect)
{
QWidget* widget = qobject_cast<QWidget*>(widgetForPainter(painter));
QStyleOption option;
option.rect = rect;
style()->drawPrimitive(QStyle::PE_PanelScrollAreaCorner, &option, painter, widget);
}
QStyleFacade::SubControl QStyleFacadeImp::hitTestScrollBar(const QStyleFacadeOption &proxyOption, const QPoint &pos)
{
MappedStyleOption<QStyleOptionSlider> opt(0, proxyOption);
QStyle::SubControl sc = style()->hitTestComplexControl(QStyle::CC_ScrollBar, &opt, pos, 0);
return convertToQStyleFacadeSubControl(sc);
}
QRect QStyleFacadeImp::scrollBarSubControlRect(const QStyleFacadeOption &proxyOption, QStyleFacade::SubControl subControl)
{
MappedStyleOption<QStyleOptionSlider> opt(0, proxyOption);
return style()->subControlRect(QStyle::CC_ScrollBar, &opt, convertToQStyleSubControl(subControl), 0);
}
void QStyleFacadeImp::paintScrollBar(QPainter *painter, const QStyleFacadeOption &proxyOption)
{
QWidget* widget = qobject_cast<QWidget*>(widgetForPainter(painter));
MappedStyleOption<QStyleOptionSlider> opt(widget, proxyOption);
if (m_style->inherits("QMacStyle")) {
// FIXME: Disable transient scrollbar animations on OSX to avoid hiding the whole webview with the scrollbar fade out animation.
opt.styleObject = 0;
}
painter->fillRect(opt.rect, opt.palette.background());
const QPoint topLeft = opt.rect.topLeft();
painter->translate(topLeft);
opt.rect.moveTo(QPoint(0, 0));
style()->drawComplexControl(QStyle::CC_ScrollBar, &opt, painter, widget);
opt.rect.moveTo(topLeft);
}
QObject* QStyleFacadeImp::widgetForPainter(QPainter* painter)
{
QPaintDevice* dev = 0;
if (painter)
dev = painter->device();
if (dev && dev->devType() == QInternal::Widget)
return static_cast<QWidget*>(dev);
return 0;
}
QStyle* QStyleFacadeImp::style() const
{
if (m_style)
return m_style;
if (m_page) {
if (QWebPageClient* pageClient = m_page->client.data())
m_style = pageClient->style();
}
if (!m_style)
m_style = QApplication::style();
return m_style;
}
}
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