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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
#include "norwegianwoodstyle.h"
#include <QComboBox>
#include <QPainter>
#include <QPainterPath>
#include <QPushButton>
#include <QStyleFactory>
NorwegianWoodStyle::NorwegianWoodStyle() :
QProxyStyle(QStyleFactory::create("windows"))
{
setObjectName("NorwegianWood");
}
//! [0]
QPalette NorwegianWoodStyle::standardPalette() const
{
if (!m_standardPalette.isBrushSet(QPalette::Disabled, QPalette::Mid)) {
QColor brown(212, 140, 95);
QColor beige(236, 182, 120);
QColor slightlyOpaqueBlack(0, 0, 0, 63);
QImage backgroundImage(":/images/woodbackground.png");
QImage buttonImage(":/images/woodbutton.png");
QImage midImage = buttonImage.convertToFormat(QImage::Format_RGB32);
QPainter painter;
painter.begin(&midImage);
painter.setPen(Qt::NoPen);
painter.fillRect(midImage.rect(), slightlyOpaqueBlack);
painter.end();
//! [0]
//! [1]
QPalette palette(brown);
palette.setBrush(QPalette::BrightText, Qt::white);
palette.setBrush(QPalette::Base, beige);
palette.setBrush(QPalette::Highlight, Qt::darkGreen);
setTexture(palette, QPalette::Button, buttonImage);
setTexture(palette, QPalette::Mid, midImage);
setTexture(palette, QPalette::Window, backgroundImage);
QBrush brush = palette.window();
brush.setColor(brush.color().darker());
palette.setBrush(QPalette::Disabled, QPalette::WindowText, brush);
palette.setBrush(QPalette::Disabled, QPalette::Text, brush);
palette.setBrush(QPalette::Disabled, QPalette::ButtonText, brush);
palette.setBrush(QPalette::Disabled, QPalette::Base, brush);
palette.setBrush(QPalette::Disabled, QPalette::Button, brush);
palette.setBrush(QPalette::Disabled, QPalette::Mid, brush);
m_standardPalette = palette;
}
return m_standardPalette;
}
//! [1]
//! [3]
void NorwegianWoodStyle::polish(QWidget *widget)
//! [3] //! [4]
{
if (qobject_cast<QPushButton *>(widget)
|| qobject_cast<QComboBox *>(widget))
widget->setAttribute(Qt::WA_Hover, true);
}
//! [4]
//! [5]
void NorwegianWoodStyle::unpolish(QWidget *widget)
//! [5] //! [6]
{
if (qobject_cast<QPushButton *>(widget)
|| qobject_cast<QComboBox *>(widget))
widget->setAttribute(Qt::WA_Hover, false);
}
//! [6]
//! [7]
int NorwegianWoodStyle::pixelMetric(PixelMetric metric,
//! [7] //! [8]
const QStyleOption *option,
const QWidget *widget) const
{
switch (metric) {
case PM_ComboBoxFrameWidth:
return 8;
case PM_ScrollBarExtent:
return QProxyStyle::pixelMetric(metric, option, widget) + 4;
default:
return QProxyStyle::pixelMetric(metric, option, widget);
}
}
//! [8]
//! [9]
int NorwegianWoodStyle::styleHint(StyleHint hint, const QStyleOption *option,
//! [9] //! [10]
const QWidget *widget,
QStyleHintReturn *returnData) const
{
switch (hint) {
case SH_DitherDisabledText:
return int(false);
case SH_EtchDisabledText:
return int(true);
default:
return QProxyStyle::styleHint(hint, option, widget, returnData);
}
}
//! [10]
//! [11]
void NorwegianWoodStyle::drawPrimitive(PrimitiveElement element,
//! [11] //! [12]
const QStyleOption *option,
QPainter *painter,
const QWidget *widget) const
{
switch (element) {
case PE_PanelButtonCommand:
{
int delta = (option->state & State_MouseOver) ? 64 : 0;
QColor slightlyOpaqueBlack(0, 0, 0, 63);
QColor semiTransparentWhite(255, 255, 255, 127 + delta);
QColor semiTransparentBlack(0, 0, 0, 127 - delta);
int x, y, width, height;
option->rect.getRect(&x, &y, &width, &height);
//! [12]
//! [13]
QPainterPath roundRect = roundRectPath(option->rect);
//! [13] //! [14]
int radius = qMin(width, height) / 2;
//! [14]
//! [15]
QBrush brush;
//! [15] //! [16]
bool darker;
const QStyleOptionButton *buttonOption =
qstyleoption_cast<const QStyleOptionButton *>(option);
if (buttonOption
&& (buttonOption->features & QStyleOptionButton::Flat)) {
brush = option->palette.window();
darker = (option->state & (State_Sunken | State_On));
} else {
if (option->state & (State_Sunken | State_On)) {
brush = option->palette.mid();
darker = !(option->state & State_Sunken);
} else {
brush = option->palette.button();
darker = false;
//! [16] //! [17]
}
//! [17] //! [18]
}
//! [18]
//! [19]
painter->save();
//! [19] //! [20]
painter->setRenderHint(QPainter::Antialiasing, true);
//! [20] //! [21]
painter->fillPath(roundRect, brush);
//! [21] //! [22]
if (darker)
//! [22] //! [23]
painter->fillPath(roundRect, slightlyOpaqueBlack);
//! [23]
//! [24]
int penWidth;
//! [24] //! [25]
if (radius < 10)
penWidth = 3;
else if (radius < 20)
penWidth = 5;
else
penWidth = 7;
QPen topPen(semiTransparentWhite, penWidth);
QPen bottomPen(semiTransparentBlack, penWidth);
if (option->state & (State_Sunken | State_On))
qSwap(topPen, bottomPen);
//! [25]
//! [26]
int x1 = x;
int x2 = x + radius;
int x3 = x + width - radius;
int x4 = x + width;
if (option->direction == Qt::RightToLeft) {
qSwap(x1, x4);
qSwap(x2, x3);
}
QPolygon topHalf;
topHalf << QPoint(x1, y)
<< QPoint(x4, y)
<< QPoint(x3, y + radius)
<< QPoint(x2, y + height - radius)
<< QPoint(x1, y + height);
painter->setClipPath(roundRect);
painter->setClipRegion(topHalf, Qt::IntersectClip);
painter->setPen(topPen);
painter->drawPath(roundRect);
//! [26] //! [32]
QPolygon bottomHalf = topHalf;
bottomHalf[0] = QPoint(x4, y + height);
painter->setClipPath(roundRect);
painter->setClipRegion(bottomHalf, Qt::IntersectClip);
painter->setPen(bottomPen);
painter->drawPath(roundRect);
painter->setPen(option->palette.windowText().color());
painter->setClipping(false);
painter->drawPath(roundRect);
painter->restore();
}
break;
//! [32] //! [33]
default:
//! [33] //! [34]
QProxyStyle::drawPrimitive(element, option, painter, widget);
}
}
//! [34]
//! [35]
void NorwegianWoodStyle::drawControl(ControlElement element,
//! [35] //! [36]
const QStyleOption *option,
QPainter *painter,
const QWidget *widget) const
{
switch (element) {
case CE_PushButtonLabel:
{
QStyleOptionButton myButtonOption;
const QStyleOptionButton *buttonOption =
qstyleoption_cast<const QStyleOptionButton *>(option);
if (buttonOption) {
myButtonOption = *buttonOption;
if (myButtonOption.palette.currentColorGroup()
!= QPalette::Disabled) {
if (myButtonOption.state & (State_Sunken | State_On)) {
myButtonOption.palette.setBrush(QPalette::ButtonText,
myButtonOption.palette.brightText());
}
}
}
QProxyStyle::drawControl(element, &myButtonOption, painter, widget);
}
break;
default:
QProxyStyle::drawControl(element, option, painter, widget);
}
}
//! [36]
//! [37]
void NorwegianWoodStyle::setTexture(QPalette &palette, QPalette::ColorRole role,
//! [37] //! [38]
const QImage &image)
{
for (int i = 0; i < QPalette::NColorGroups; ++i) {
QBrush brush(image);
brush.setColor(palette.brush(QPalette::ColorGroup(i), role).color());
palette.setBrush(QPalette::ColorGroup(i), role, brush);
}
}
//! [38]
//! [39]
QPainterPath NorwegianWoodStyle::roundRectPath(const QRect &rect)
//! [39] //! [40]
{
int radius = qMin(rect.width(), rect.height()) / 2;
int diam = 2 * radius;
int x1, y1, x2, y2;
rect.getCoords(&x1, &y1, &x2, &y2);
QPainterPath path;
path.moveTo(x2, y1 + radius);
path.arcTo(QRect(x2 - diam, y1, diam, diam), 0.0, +90.0);
path.lineTo(x1 + radius, y1);
path.arcTo(QRect(x1, y1, diam, diam), 90.0, +90.0);
path.lineTo(x1, y2 - radius);
path.arcTo(QRect(x1, y2 - diam, diam, diam), 180.0, +90.0);
path.lineTo(x1 + radius, y2);
path.arcTo(QRect(x2 - diam, y2 - diam, diam, diam), 270.0, +90.0);
path.closeSubpath();
return path;
}
//! [40]
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