qt5base-lts/examples/widgets/painting/shared/arthurstyle.cpp
Jani Heikkinen 83a5694dc2 Update copyright headers
Qt copyrights are now in The Qt Company, so we could update the source
code headers accordingly. In the same go we should also fix the links to
point to qt.io.

Outdated header.LGPL removed (use header.LGPL21 instead)

Old header.LGPL3 renamed to header.LGPL3-COMM to match actual licensing
combination. New header.LGPL-COMM taken in the use file which were
using old header.LGPL3 (src/plugins/platforms/android/extract.cpp)

Added new header.LGPL3 containing Commercial + LGPLv3 + GPLv2 license
combination

Change-Id: I6f49b819a8a20cc4f88b794a8f6726d975e8ffbe
Reviewed-by: Matti Paaso <matti.paaso@theqtcompany.com>
2015-02-11 06:49:51 +00:00

483 lines
19 KiB
C++

/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the demonstration applications of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL21$
** 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 The Qt Company. For licensing terms
** and conditions see http://www.qt.io/terms-conditions. For further
** information use the contact form at http://www.qt.io/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 or version 3 as published by the Free
** Software Foundation and appearing in the file LICENSE.LGPLv21 and
** LICENSE.LGPLv3 included in the packaging of this file. Please review the
** following information to ensure the GNU Lesser General Public License
** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** As a special exception, The Qt Company gives you certain additional
** rights. These rights are described in The Qt Company LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "arthurstyle.h"
#include "arthurwidgets.h"
#include <QLayout>
#include <QPainter>
#include <QPainterPath>
#include <QPixmapCache>
#include <QRadioButton>
#include <QString>
#include <QStyleOption>
#include <QtDebug>
QPixmap cached(const QString &img)
{
if (QPixmap *p = QPixmapCache::find(img))
return *p;
QPixmap pm;
pm = QPixmap::fromImage(QImage(img), Qt::OrderedDither | Qt::OrderedAlphaDither);
if (pm.isNull())
return QPixmap();
QPixmapCache::insert(img, pm);
return pm;
}
ArthurStyle::ArthurStyle()
: QCommonStyle()
{
Q_INIT_RESOURCE(shared);
}
void ArthurStyle::drawHoverRect(QPainter *painter, const QRect &r) const
{
qreal h = r.height();
qreal h2 = r.height() / qreal(2);
QPainterPath path;
path.addRect(r.x() + h2, r.y() + 0, r.width() - h2 * 2, r.height());
path.addEllipse(r.x(), r.y(), h, h);
path.addEllipse(r.x() + r.width() - h, r.y(), h, h);
path.setFillRule(Qt::WindingFill);
painter->setPen(Qt::NoPen);
painter->setBrush(QColor(191, 215, 191));
painter->setRenderHint(QPainter::Antialiasing);
painter->drawPath(path);
}
void ArthurStyle::drawPrimitive(PrimitiveElement element, const QStyleOption *option,
QPainter *painter, const QWidget *widget) const
{
Q_ASSERT(option);
switch (element) {
case PE_FrameFocusRect:
break;
case PE_IndicatorRadioButton:
if (const QStyleOptionButton *button = qstyleoption_cast<const QStyleOptionButton *>(option)) {
bool hover = (button->state & State_Enabled) && (button->state & State_MouseOver);
painter->save();
QPixmap radio;
if (hover)
drawHoverRect(painter, widget->rect());
if (button->state & State_Sunken)
radio = cached(":res/images/radiobutton-on.png");
else if (button->state & State_On)
radio = cached(":res/images/radiobutton_on.png");
else
radio = cached(":res/images/radiobutton_off.png");
painter->drawPixmap(button->rect.topLeft(), radio);
painter->restore();
}
break;
case PE_PanelButtonCommand:
if (const QStyleOptionButton *button = qstyleoption_cast<const QStyleOptionButton *>(option)) {
bool hover = (button->state & State_Enabled) && (button->state & State_MouseOver);
painter->save();
const QPushButton *pushButton = qobject_cast<const QPushButton *>(widget);
Q_ASSERT(pushButton);
QWidget *parent = pushButton->parentWidget();
if (parent && qobject_cast<QGroupBox *>(parent)) {
QLinearGradient lg(0, 0, 0, parent->height());
lg.setColorAt(0, QColor(224,224,224));
lg.setColorAt(1, QColor(255,255,255));
painter->setPen(Qt::NoPen);
painter->setBrush(lg);
painter->setBrushOrigin(-widget->mapToParent(QPoint(0,0)));
painter->drawRect(button->rect);
painter->setBrushOrigin(0,0);
}
bool down = (button->state & State_Sunken) || (button->state & State_On);
QPixmap left, right, mid;
if (down) {
left = cached(":res/images/button_pressed_cap_left.png");
right = cached(":res/images/button_pressed_cap_right.png");
mid = cached(":res/images/button_pressed_stretch.png");
} else {
left = cached(":res/images/button_normal_cap_left.png");
right = cached(":res/images/button_normal_cap_right.png");
mid = cached(":res/images/button_normal_stretch.png");
}
painter->drawPixmap(button->rect.topLeft(), left);
painter->drawTiledPixmap(QRect(button->rect.x() + left.width(),
button->rect.y(),
button->rect.width() - left.width() - right.width(),
left.height()),
mid);
painter->drawPixmap(button->rect.x() + button->rect.width() - right.width(),
button->rect.y(),
right);
if (hover)
painter->fillRect(widget->rect().adjusted(3,5,-3,-5), QColor(31,127,31,63));
painter->restore();
}
break;
case PE_FrameGroupBox:
if (const QStyleOptionFrameV2 *group
= qstyleoption_cast<const QStyleOptionFrameV2 *>(option)) {
const QRect &r = group->rect;
painter->save();
int radius = 14;
int radius2 = radius*2;
QPainterPath clipPath;
clipPath.moveTo(radius, 0);
clipPath.arcTo(r.right() - radius2, 0, radius2, radius2, 90, -90);
clipPath.arcTo(r.right() - radius2, r.bottom() - radius2, radius2, radius2, 0, -90);
clipPath.arcTo(r.left(), r.bottom() - radius2, radius2, radius2, 270, -90);
clipPath.arcTo(r.left(), r.top(), radius2, radius2, 180, -90);
painter->setClipPath(clipPath);
QPixmap titleStretch = cached(":res/images/title_stretch.png");
QPixmap topLeft = cached(":res/images/groupframe_topleft.png");
QPixmap topRight = cached(":res/images/groupframe_topright.png");
QPixmap bottomLeft = cached(":res/images/groupframe_bottom_left.png");
QPixmap bottomRight = cached(":res/images/groupframe_bottom_right.png");
QPixmap leftStretch = cached(":res/images/groupframe_left_stretch.png");
QPixmap topStretch = cached(":res/images/groupframe_top_stretch.png");
QPixmap rightStretch = cached(":res/images/groupframe_right_stretch.png");
QPixmap bottomStretch = cached(":res/images/groupframe_bottom_stretch.png");
QLinearGradient lg(0, 0, 0, r.height());
lg.setColorAt(0, QColor(224,224,224));
lg.setColorAt(1, QColor(255,255,255));
painter->setPen(Qt::NoPen);
painter->setBrush(lg);
painter->drawRect(r.adjusted(0, titleStretch.height()/2, 0, 0));
painter->setClipping(false);
int topFrameOffset = titleStretch.height()/2 - 2;
painter->drawPixmap(r.topLeft() + QPoint(0, topFrameOffset), topLeft);
painter->drawPixmap(r.topRight() - QPoint(topRight.width()-1, 0)
+ QPoint(0, topFrameOffset), topRight);
painter->drawPixmap(r.bottomLeft() - QPoint(0, bottomLeft.height()-1), bottomLeft);
painter->drawPixmap(r.bottomRight() - QPoint(bottomRight.width()-1,
bottomRight.height()-1), bottomRight);
QRect left = r;
left.setY(r.y() + topLeft.height() + topFrameOffset);
left.setWidth(leftStretch.width());
left.setHeight(r.height() - topLeft.height() - bottomLeft.height() - topFrameOffset);
painter->drawTiledPixmap(left, leftStretch);
QRect top = r;
top.setX(r.x() + topLeft.width());
top.setY(r.y() + topFrameOffset);
top.setWidth(r.width() - topLeft.width() - topRight.width());
top.setHeight(topLeft.height());
painter->drawTiledPixmap(top, topStretch);
QRect right = r;
right.setX(r.right() - rightStretch.width()+1);
right.setY(r.y() + topRight.height() + topFrameOffset);
right.setWidth(rightStretch.width());
right.setHeight(r.height() - topRight.height()
- bottomRight.height() - topFrameOffset);
painter->drawTiledPixmap(right, rightStretch);
QRect bottom = r;
bottom.setX(r.x() + bottomLeft.width());
bottom.setY(r.bottom() - bottomStretch.height()+1);
bottom.setWidth(r.width() - bottomLeft.width() - bottomRight.width());
bottom.setHeight(bottomLeft.height());
painter->drawTiledPixmap(bottom, bottomStretch);
painter->restore();
}
break;
default:
QCommonStyle::drawPrimitive(element, option, painter, widget);
break;
}
return;
}
void ArthurStyle::drawComplexControl(ComplexControl control, const QStyleOptionComplex *option,
QPainter *painter, const QWidget *widget) const
{
switch (control) {
case CC_Slider:
if (const QStyleOptionSlider *slider = qstyleoption_cast<const QStyleOptionSlider *>(option)) {
QRect groove = subControlRect(CC_Slider, option, SC_SliderGroove, widget);
QRect handle = subControlRect(CC_Slider, option, SC_SliderHandle, widget);
painter->save();
bool hover = (slider->state & State_Enabled) && (slider->state & State_MouseOver);
if (hover) {
QRect moderated = widget->rect().adjusted(0, 4, 0, -4);
drawHoverRect(painter, moderated);
}
if ((option->subControls & SC_SliderGroove) && groove.isValid()) {
QPixmap grv = cached(":res/images/slider_bar.png");
painter->drawPixmap(QRect(groove.x() + 5, groove.y(),
groove.width() - 10, grv.height()),
grv);
}
if ((option->subControls & SC_SliderHandle) && handle.isValid()) {
QPixmap hndl = cached(":res/images/slider_thumb_on.png");
painter->drawPixmap(handle.topLeft(), hndl);
}
painter->restore();
}
break;
case CC_GroupBox:
if (const QStyleOptionGroupBox *groupBox
= qstyleoption_cast<const QStyleOptionGroupBox *>(option)) {
QStyleOptionGroupBox groupBoxCopy(*groupBox);
groupBoxCopy.subControls &= ~SC_GroupBoxLabel;
QCommonStyle::drawComplexControl(control, &groupBoxCopy, painter, widget);
if (groupBox->subControls & SC_GroupBoxLabel) {
const QRect &r = groupBox->rect;
QPixmap titleLeft = cached(":res/images/title_cap_left.png");
QPixmap titleRight = cached(":res/images/title_cap_right.png");
QPixmap titleStretch = cached(":res/images/title_stretch.png");
int txt_width = groupBox->fontMetrics.width(groupBox->text) + 20;
painter->drawPixmap(r.center().x() - txt_width/2, 0, titleLeft);
QRect tileRect = subControlRect(control, groupBox, SC_GroupBoxLabel, widget);
painter->drawTiledPixmap(tileRect, titleStretch);
painter->drawPixmap(tileRect.x() + tileRect.width(), 0, titleRight);
int opacity = 31;
painter->setPen(QColor(0, 0, 0, opacity));
painter->drawText(tileRect.translated(0, 1),
Qt::AlignVCenter | Qt::AlignHCenter, groupBox->text);
painter->drawText(tileRect.translated(2, 1),
Qt::AlignVCenter | Qt::AlignHCenter, groupBox->text);
painter->setPen(QColor(0, 0, 0, opacity * 2));
painter->drawText(tileRect.translated(1, 1),
Qt::AlignVCenter | Qt::AlignHCenter, groupBox->text);
painter->setPen(Qt::white);
painter->drawText(tileRect, Qt::AlignVCenter | Qt::AlignHCenter, groupBox->text);
}
}
break;
default:
QCommonStyle::drawComplexControl(control, option, painter, widget);
break;
}
return;
}
void ArthurStyle::drawControl(QStyle::ControlElement element, const QStyleOption *option,
QPainter *painter, const QWidget *widget) const
{
switch (element) {
case CE_RadioButtonLabel:
if (const QStyleOptionButton *button
= qstyleoption_cast<const QStyleOptionButton *>(option)) {
if (button->text.isEmpty()) {
QCommonStyle::drawControl(element, option, painter, widget);
} else {
painter->save();
painter->setPen(Qt::black);
painter->drawText(button->rect, Qt::AlignVCenter, button->text);
painter->restore();
}
}
break;
case CE_PushButtonLabel:
if (const QStyleOptionButton *button
= qstyleoption_cast<const QStyleOptionButton *>(option)) {
if (button->text.isEmpty()) {
QCommonStyle::drawControl(element, option, painter, widget);
} else {
painter->save();
painter->setPen(Qt::black);
painter->drawText(button->rect, Qt::AlignVCenter | Qt::AlignHCenter, button->text);
painter->restore();
}
}
break;
default:
QCommonStyle::drawControl(element, option, painter, widget);
break;
}
}
QRect ArthurStyle::subControlRect(ComplexControl control, const QStyleOptionComplex *option,
SubControl subControl, const QWidget *widget) const
{
QRect rect;
switch (control) {
default:
rect = QCommonStyle::subControlRect(control, option, subControl, widget);
break;
case CC_GroupBox:
if (const QStyleOptionGroupBox *group
= qstyleoption_cast<const QStyleOptionGroupBox *>(option)) {
switch (subControl) {
default:
rect = QCommonStyle::subControlRect(control, option, subControl, widget);
break;
case SC_GroupBoxContents:
rect = QCommonStyle::subControlRect(control, option, subControl, widget);
rect.adjust(0, -8, 0, 0);
break;
case SC_GroupBoxFrame:
rect = group->rect;
break;
case SC_GroupBoxLabel:
QPixmap titleLeft = cached(":res/images/title_cap_left.png");
QPixmap titleRight = cached(":res/images/title_cap_right.png");
QPixmap titleStretch = cached(":res/images/title_stretch.png");
int txt_width = group->fontMetrics.width(group->text) + 20;
rect = QRect(group->rect.center().x() - txt_width/2 + titleLeft.width(), 0,
txt_width - titleLeft.width() - titleRight.width(),
titleStretch.height());
break;
}
}
break;
}
if (control == CC_Slider && subControl == SC_SliderHandle) {
rect.setWidth(13);
rect.setHeight(27);
} else if (control == CC_Slider && subControl == SC_SliderGroove) {
rect.setHeight(9);
rect.moveTop(27/2 - 9/2);
}
return rect;
}
QSize ArthurStyle::sizeFromContents(ContentsType type, const QStyleOption *option,
const QSize &size, const QWidget *widget) const
{
QSize newSize = QCommonStyle::sizeFromContents(type, option, size, widget);
switch (type) {
case CT_RadioButton:
newSize += QSize(20, 0);
break;
case CT_PushButton:
newSize.setHeight(26);
break;
case CT_Slider:
newSize.setHeight(27);
break;
default:
break;
}
return newSize;
}
int ArthurStyle::pixelMetric(PixelMetric pm, const QStyleOption *opt, const QWidget *widget) const
{
if (pm == PM_SliderLength)
return 13;
return QCommonStyle::pixelMetric(pm, opt, widget);
}
void ArthurStyle::polish(QWidget *widget)
{
if (widget->layout() && qobject_cast<QGroupBox *>(widget)) {
if (widget->findChildren<QGroupBox *>().size() == 0) {
widget->layout()->setSpacing(0);
widget->layout()->setMargin(12);
} else {
widget->layout()->setMargin(13);
}
}
if (qobject_cast<QPushButton *>(widget)
|| qobject_cast<QRadioButton *>(widget)
|| qobject_cast<QSlider *>(widget)) {
widget->setAttribute(Qt::WA_Hover);
}
QPalette pal = widget->palette();
if (widget->isWindow()) {
pal.setColor(QPalette::Background, QColor(241, 241, 241));
widget->setPalette(pal);
}
}
void ArthurStyle::unpolish(QWidget *widget)
{
if (qobject_cast<QPushButton *>(widget)
|| qobject_cast<QRadioButton *>(widget)
|| qobject_cast<QSlider *>(widget)) {
widget->setAttribute(Qt::WA_Hover, false);
}
}
void ArthurStyle::polish(QPalette &palette)
{
palette.setColor(QPalette::Background, QColor(241, 241, 241));
}
QRect ArthurStyle::subElementRect(SubElement element, const QStyleOption *option, const QWidget *widget) const
{
QRect r;
switch(element) {
case SE_RadioButtonClickRect:
r = widget->rect();
break;
case SE_RadioButtonContents:
r = widget->rect().adjusted(20, 0, 0, 0);
break;
default:
r = QCommonStyle::subElementRect(element, option, widget);
break;
}
if (qobject_cast<const QRadioButton*>(widget))
r = r.adjusted(5, 0, -5, 0);
return r;
}