qt5base-lts/examples/widgets/painting/shared/arthurstyle.cpp
Gabriel de Dietrich 806dda08d6 Moving .qdoc files under examples/widgets/doc
Updated those .qdoc files to refer to the new relative examples
emplacement. Images and snippets to be moved later.

Also grouped all widgets related examples under widgets.

Change-Id: Ib29696e2d8948524537f53e8dda88f9ee26a597f
Reviewed-by: J-P Nurmi <j-p.nurmi@nokia.com>
2012-08-20 12:20:55 +02:00

453 lines
17 KiB
C++

/****************************************************************************
**
** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/
**
** This file is part of the demonstration applications of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** GNU Lesser General Public License Usage
** 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, Nokia gives you certain additional
** rights. These rights are described in the Nokia 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.
**
** Other Usage
** Alternatively, this file may be used in accordance with the terms and
** conditions contained in a signed written agreement between you and Nokia.
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#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()
: QWindowsStyle()
{
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:
QWindowsStyle::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;
QWindowsStyle::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:
QWindowsStyle::drawComplexControl(control, option, painter, widget);
break;
}
return;
}
QRect ArthurStyle::subControlRect(ComplexControl control, const QStyleOptionComplex *option,
SubControl subControl, const QWidget *widget) const
{
QRect rect;
switch (control) {
default:
rect = QWindowsStyle::subControlRect(control, option, subControl, widget);
break;
case CC_GroupBox:
if (const QStyleOptionGroupBox *group
= qstyleoption_cast<const QStyleOptionGroupBox *>(option)) {
switch (subControl) {
default:
rect = QWindowsStyle::subControlRect(control, option, subControl, widget);
break;
case SC_GroupBoxContents:
rect = QWindowsStyle::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 = QWindowsStyle::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 QWindowsStyle::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 = QWindowsStyle::subElementRect(element, option, widget);
break;
}
if (qobject_cast<const QRadioButton*>(widget))
r = r.adjusted(5, 0, -5, 0);
return r;
}