Files
cantata/support/touchproxystyle.cpp
craig.p.drummond 28a6e9263d Fix variable setting
2015-02-06 22:39:17 +00:00

502 lines
21 KiB
C++

/*
* Cantata
*
* Copyright (c) 2011-2014 Craig Drummond <craig.p.drummond@gmail.com>
*
* ----
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#include "touchproxystyle.h"
#include "utils.h"
#include "gtkstyle.h"
#include "flickcharm.h"
#ifdef Q_OS_MAC
#include "osxstyle.h"
#endif
#include <QSpinBox>
#include <QComboBox>
#include <QScrollBar>
#include <QPainter>
#include <QStyleOptionSpinBox>
#include <QAbstractScrollArea>
#include <QStyledItemDelegate>
#include <QApplication>
double TouchProxyStyle::constScaleFactor=1.4;
static const char * constOnCombo="on-combo";
static bool isOnCombo(const QWidget *w)
{
return w && (qobject_cast<const QComboBox *>(w) || isOnCombo(w->parentWidget()));
}
static void drawSpinButton(QPainter *painter, const QRect &r, const QColor &col, bool isPlus)
{
int length=r.height()*0.5;
int lineWidth=length<24 ? 2 : 4;
if (length<(lineWidth*2)) {
length=lineWidth*2;
} else if (length%2) {
length++;
}
painter->save();
painter->setRenderHint(QPainter::Antialiasing, false);
painter->fillRect(r.x()+((r.width()-length)/2), r.y()+((r.height()-lineWidth)/2), length, lineWidth, col);
if (isPlus) {
painter->fillRect(r.x()+((r.width()-lineWidth)/2), r.y()+((r.height()-length)/2), lineWidth, length, col);
}
painter->restore();
}
class ComboItemDelegate : public QStyledItemDelegate
{
public:
ComboItemDelegate(QComboBox *p) : QStyledItemDelegate(p), combo(p) { }
virtual ~ComboItemDelegate() { }
QSize sizeHint(const QStyleOptionViewItem &option, const QModelIndex &index) const
{
QSize sz=QStyledItemDelegate::sizeHint(option, index);
int minH=option.fontMetrics.height()*2;
if (sz.height()<minH) {
sz.setHeight(minH);
}
return sz;
}
void paint(QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index) const
{
if (GtkStyle::isActive()) {
QStyleOptionMenuItem opt = getStyleOption(option, index);
painter->fillRect(option.rect, opt.palette.background());
combo->style()->drawControl(QStyle::CE_MenuItem, &opt, painter, combo);
} else {
QStyledItemDelegate::paint(painter, option, index);
}
}
static bool isSeparator(const QModelIndex &index)
{
return index.data(Qt::AccessibleDescriptionRole).toString() == QLatin1String("separator");
}
QStyleOptionMenuItem getStyleOption(const QStyleOptionViewItem &option, const QModelIndex &index) const
{
QStyleOptionMenuItem menuOption;
QPalette resolvedpalette = option.palette.resolve(QApplication::palette("QMenu"));
QVariant value = index.data(Qt::ForegroundRole);
if (value.canConvert<QBrush>()) {
resolvedpalette.setBrush(QPalette::WindowText, qvariant_cast<QBrush>(value));
resolvedpalette.setBrush(QPalette::ButtonText, qvariant_cast<QBrush>(value));
resolvedpalette.setBrush(QPalette::Text, qvariant_cast<QBrush>(value));
}
menuOption.palette = resolvedpalette;
menuOption.state = QStyle::State_None;
if (combo->window()->isActiveWindow()) {
menuOption.state = QStyle::State_Active;
}
if ((option.state & QStyle::State_Enabled) && (index.model()->flags(index) & Qt::ItemIsEnabled)) {
menuOption.state |= QStyle::State_Enabled;
} else {
menuOption.palette.setCurrentColorGroup(QPalette::Disabled);
}
if (option.state & QStyle::State_Selected) {
menuOption.state |= QStyle::State_Selected;
}
menuOption.checkType = QStyleOptionMenuItem::NonExclusive;
menuOption.checked = combo->currentIndex() == index.row();
if (isSeparator(index)) {
menuOption.menuItemType = QStyleOptionMenuItem::Separator;
} else {
menuOption.menuItemType = QStyleOptionMenuItem::Normal;
}
QVariant variant = index.model()->data(index, Qt::DecorationRole);
switch (variant.type()) {
case QVariant::Icon:
menuOption.icon = qvariant_cast<QIcon>(variant);
break;
case QVariant::Color: {
static QPixmap pixmap(option.decorationSize);
pixmap.fill(qvariant_cast<QColor>(variant));
menuOption.icon = pixmap;
break;
}
default:
menuOption.icon = qvariant_cast<QPixmap>(variant);
break;
}
if (index.data(Qt::BackgroundRole).canConvert<QBrush>()) {
menuOption.palette.setBrush(QPalette::All, QPalette::Background,
qvariant_cast<QBrush>(index.data(Qt::BackgroundRole)));
}
menuOption.text = index.model()->data(index, Qt::DisplayRole).toString()
.replace(QLatin1Char('&'), QLatin1String("&&"));
menuOption.tabWidth = 0;
menuOption.maxIconWidth = option.decorationSize.width() + 4;
menuOption.menuRect = option.rect;
menuOption.rect = option.rect;
menuOption.font = combo->font();
menuOption.fontMetrics = QFontMetrics(menuOption.font);
return menuOption;
}
QComboBox *combo;
};
TouchProxyStyle::TouchProxyStyle(int modView, bool touchSpin, bool gtkOverlayStyleScrollbar)
: touchStyleSpin(touchSpin)
, sbarPlainViewWidth(-1)
{
spinButtonRatio=touchSpin && Utils::touchFriendly() ? 1.5 : 1.25;
if (Utils::touchFriendly()) {
sbarType=SB_Thin;
sbarPlainViewWidth=Utils::scaleForDpi(2);
} else if (gtkOverlayStyleScrollbar) {
sbarType=SB_Gtk;
sbarPlainViewWidth=QApplication::fontMetrics().height()/1.75;
} else {
sbarType=SB_Standard;
}
setModViewFrame(modView && (SB_Gtk==sbarType || !qApp->style()->styleHint(SH_ScrollView_FrameOnlyAroundContents, 0, 0, 0)) ? modView : 0);
}
TouchProxyStyle::~TouchProxyStyle()
{
}
QSize TouchProxyStyle::sizeFromContents(ContentsType type, const QStyleOption *option, const QSize &size, const QWidget *widget) const
{
QSize sz=baseStyle()->sizeFromContents(type, option, size, widget);
if (SB_Standard!=sbarType && CT_ScrollBar==type) {
if (const QStyleOptionSlider *sb = qstyleoption_cast<const QStyleOptionSlider *>(option)) {
int extent(pixelMetric(PM_ScrollBarExtent, option, widget)),
sliderMin(pixelMetric(PM_ScrollBarSliderMin, option, widget));
if (sb->orientation == Qt::Horizontal) {
sz = QSize(sliderMin, extent);
} else {
sz = QSize(extent, sliderMin);
}
}
}
if (touchStyleSpin && CT_SpinBox==type) {
if (const QStyleOptionSpinBox *spinBox = qstyleoption_cast<const QStyleOptionSpinBox *>(option)) {
if (QAbstractSpinBox::NoButtons!=spinBox->buttonSymbols) {
#if QT_VERSION < 0x050200
sz += QSize(0, 1);
#endif
#if QT_VERSION >= 0x050000
// Qt5 does not seem to be taking special value, or suffix, into account when calculatng width...
if (widget && qobject_cast<const QSpinBox *>(widget)) {
const QSpinBox *spin=static_cast<const QSpinBox *>(widget);
QString special=spin->specialValueText();
int minWidth=0;
if (!special.isEmpty()) {
minWidth=option->fontMetrics.width(special+QLatin1String(" "));
}
QString suffix=spin->suffix()+QLatin1String(" ");
minWidth=qMax(option->fontMetrics.width(QString::number(spin->minimum())+suffix), minWidth);
minWidth=qMax(option->fontMetrics.width(QString::number(spin->maximum())+suffix), minWidth);
if (minWidth>0) {
int frameWidth=baseStyle()->pixelMetric(QStyle::PM_DefaultFrameWidth, option, 0);
int buttonWidth=(sz.height()-(frameWidth*2))*spinButtonRatio;
minWidth=((minWidth+(buttonWidth+frameWidth)*2)*1.05)+0.5;
if (sz.width()<minWidth) {
sz.setWidth(minWidth);
}
}
} else
#endif
if (!GtkStyle::isActive()) {
sz.setWidth(sz.width()+6);
}
}
}
} else if (CT_ToolButton==type && Utils::touchFriendly()) {
if (const QStyleOptionToolButton *tb = qstyleoption_cast<const QStyleOptionToolButton *>(option)) {
if (tb->text.isEmpty()) {
sz.setWidth(sz.width()*constScaleFactor);
}
}
}
return sz;
}
int TouchProxyStyle::styleHint(StyleHint hint, const QStyleOption *option, const QWidget *widget, QStyleHintReturn *returnData) const
{
if (SH_ScrollView_FrameOnlyAroundContents==hint && SB_Standard!=sbarType) {
return false;
}
return baseStyle()->styleHint(hint, option, widget, returnData);
}
int TouchProxyStyle::pixelMetric(PixelMetric metric, const QStyleOption *option, const QWidget *widget) const
{
if (SB_Standard!=sbarType && PM_ScrollBarExtent==metric) {
return sbarPlainViewWidth;
}
return baseStyle()->pixelMetric(metric, option, widget);
}
QRect TouchProxyStyle::subControlRect(ComplexControl control, const QStyleOptionComplex *option, SubControl subControl, const QWidget *widget) const
{
if (SB_Standard!=sbarType && CC_ScrollBar==control) {
if (const QStyleOptionSlider *sb = qstyleoption_cast<const QStyleOptionSlider *>(option)) {
QRect ret;
bool horizontal(Qt::Horizontal==sb->orientation);
int sbextent(pixelMetric(PM_ScrollBarExtent, sb, widget)),
sliderMaxLength(horizontal ? sb->rect.width() : sb->rect.height()),
sliderMinLength(pixelMetric(PM_ScrollBarSliderMin, sb, widget)),
sliderLength;
if (sb->maximum != sb->minimum) {
uint valueRange = sb->maximum - sb->minimum;
sliderLength = (sb->pageStep * sliderMaxLength) / (valueRange + sb->pageStep);
if (sliderLength < sliderMinLength) {
sliderLength = sliderMinLength;
}
if (sliderLength > sliderMaxLength) {
sliderLength = sliderMaxLength;
}
} else {
sliderLength = sliderMaxLength;
}
int sliderstart(sliderPositionFromValue(sb->minimum, sb->maximum, sb->sliderPosition, sliderMaxLength - sliderLength, sb->upsideDown));
// Subcontrols
switch(subControl)
{
case SC_ScrollBarSubLine:
case SC_ScrollBarAddLine:
return QRect();
case SC_ScrollBarSubPage:
if (horizontal) {
ret.setRect(0, 0, sliderstart, sbextent);
} else {
ret.setRect(0, 0, sbextent, sliderstart);
}
break;
case SC_ScrollBarAddPage:
if (horizontal) {
ret.setRect(sliderstart + sliderLength, 0, sliderMaxLength - sliderstart - sliderLength, sbextent);
} else {
ret.setRect(0, sliderstart + sliderLength, sbextent, sliderMaxLength - sliderstart - sliderLength);
}
break;
case SC_ScrollBarGroove:
ret=QRect(0, 0, sb->rect.width(), sb->rect.height());
break;
case SC_ScrollBarSlider:
if (horizontal) {
ret=QRect(sliderstart, 0, sliderLength, sbextent);
} else {
ret=QRect(0, sliderstart, sbextent, sliderLength);
}
break;
default:
ret = baseStyle()->subControlRect(control, option, subControl, widget);
break;
}
return visualRect(sb->direction/*Qt::LeftToRight*/, sb->rect, ret);
}
}
if (touchStyleSpin && CC_SpinBox==control) {
if (const QStyleOptionSpinBox *spinBox = qstyleoption_cast<const QStyleOptionSpinBox *>(option)) {
if (QAbstractSpinBox::NoButtons!=spinBox->buttonSymbols) {
int border=2;
int padBeforeButtons=GtkStyle::isActive() ? 0 : 2;
int internalHeight=spinBox->rect.height()-(border*2);
int internalWidth=internalHeight*spinButtonRatio;
switch (subControl) {
case SC_SpinBoxUp:
return Qt::LeftToRight==spinBox->direction
? QRect(spinBox->rect.width()-(internalWidth+border), border, internalWidth, internalHeight)
: QRect(border, border, internalWidth, internalHeight);
case SC_SpinBoxDown:
return Qt::LeftToRight==spinBox->direction
? QRect(spinBox->rect.width()-((internalWidth*2)+border), border, internalWidth, internalHeight)
: QRect(internalWidth+border, border, internalWidth, internalHeight);
case SC_SpinBoxEditField:
return Qt::LeftToRight==spinBox->direction
? QRect(border, border, spinBox->rect.width()-((internalWidth*2)+border+padBeforeButtons), internalHeight)
: QRect(((internalWidth*2)+border), border, spinBox->rect.width()-((internalWidth*2)+border+padBeforeButtons), internalHeight);
case SC_SpinBoxFrame:
return spinBox->rect;
default:
break;
}
}
}
}
return baseStyle()->subControlRect(control, option, subControl, widget);
}
void TouchProxyStyle::drawComplexControl(ComplexControl control, const QStyleOptionComplex *option, QPainter *painter, const QWidget *widget) const
{
if (SB_Standard!=sbarType && CC_ScrollBar==control) {
if (const QStyleOptionSlider *sb = qstyleoption_cast<const QStyleOptionSlider *>(option)) {
QRect r=option->rect;
QRect slider=subControlRect(control, option, SC_ScrollBarSlider, widget);
if (widget && widget->property(constOnCombo).toBool()) {
painter->fillRect(r, QApplication::palette().color(QPalette::Background)); // option->palette.background());
} else if (!widget || widget->testAttribute(Qt::WA_OpaquePaintEvent)) {
if (option->palette.base().color()==Qt::transparent) {
painter->fillRect(r, QApplication::palette().color(QPalette::Base));
} else {
painter->fillRect(r, option->palette.base());
}
}
if (slider.isValid()) {
bool inactive=!(sb->activeSubControls&SC_ScrollBarSlider && (option->state&State_MouseOver || option->state&State_Sunken));
#ifdef Q_OS_MAC
QColor col(OSXStyle::self()->viewPalette().highlight().color());
#else
QColor col(option->palette.highlight().color());
#endif
if (!(option->state&State_Active)) {
col=col.darker(115);
}
if (SB_Gtk==sbarType) {
int adjust=inactive ? 3 : 1;
if (Qt::Horizontal==sb->orientation) {
slider.adjust(1, adjust, -1, -adjust);
} else {
slider.adjust(adjust, 1, -adjust, -1);
}
int dimension=(Qt::Horizontal==sb->orientation ? slider.height() : slider.width());
QPainterPath path=Utils::buildPath(QRectF(slider.x()+0.5, slider.y()+0.5, slider.width()-1, slider.height()-1),
dimension>6 ? (dimension/4.0) : (dimension/8.0));
painter->save();
painter->setRenderHint(QPainter::Antialiasing, true);
painter->fillPath(path, col);
painter->setPen(col);
painter->drawPath(path);
painter->restore();
} else {
painter->fillRect(slider, col);
}
}
return;
}
}
if (touchStyleSpin && CC_SpinBox==control) {
if (const QStyleOptionSpinBox *spinBox = qstyleoption_cast<const QStyleOptionSpinBox *>(option)) {
if (QAbstractSpinBox::NoButtons!=spinBox->buttonSymbols) {
QStyleOptionFrame opt;
opt.state=spinBox->state;
opt.state|=State_Sunken;
opt.rect=spinBox->rect;
opt.palette=spinBox->palette;
opt.lineWidth=baseStyle()->pixelMetric(QStyle::PM_DefaultFrameWidth, option, widget);
opt.midLineWidth=0;
opt.fontMetrics=spinBox->fontMetrics;
opt.direction=spinBox->direction;
baseStyle()->drawPrimitive(PE_PanelLineEdit, &opt, painter, 0);
QRect plusRect=subControlRect(CC_SpinBox, spinBox, SC_SpinBoxUp, widget);
QRect minusRect=subControlRect(CC_SpinBox, spinBox, SC_SpinBoxDown, widget);
QColor separatorColor(spinBox->palette.foreground().color());
separatorColor.setAlphaF(0.15);
painter->setPen(separatorColor);
if (Qt::LeftToRight==spinBox->direction) {
painter->drawLine(plusRect.topLeft(), plusRect.bottomLeft());
painter->drawLine(minusRect.topLeft(), minusRect.bottomLeft());
} else {
painter->drawLine(plusRect.topRight(), plusRect.bottomRight());
painter->drawLine(minusRect.topRight(), minusRect.bottomRight());
}
if (option->state&State_Sunken) {
QRect fillRect;
if (spinBox->activeSubControls&SC_SpinBoxUp) {
fillRect=plusRect;
} else if (spinBox->activeSubControls&SC_SpinBoxDown) {
fillRect=minusRect;
}
if (!fillRect.isEmpty()) {
QColor col=spinBox->palette.highlight().color();
col.setAlphaF(0.1);
painter->fillRect(fillRect.adjusted(1, 1, -1, -1), col);
}
}
drawSpinButton(painter, plusRect,
spinBox->palette.color(spinBox->state&State_Enabled && (spinBox->stepEnabled&QAbstractSpinBox::StepUpEnabled)
? QPalette::Current : QPalette::Disabled, QPalette::Text), true);
drawSpinButton(painter, minusRect,
spinBox->palette.color(spinBox->state&State_Enabled && (spinBox->stepEnabled&QAbstractSpinBox::StepDownEnabled)
? QPalette::Current : QPalette::Disabled, QPalette::Text), false);
return;
}
}
}
baseStyle()->drawComplexControl(control, option, painter, widget);
}
void TouchProxyStyle::drawPrimitive(PrimitiveElement element, const QStyleOption *option, QPainter *painter, const QWidget *widget) const
{
if (PE_PanelScrollAreaCorner==element && option && SB_Standard!=sbarType) {
painter->fillRect(option->rect, option->palette.brush(QPalette::Base));
} else {
ProxyStyle::drawPrimitive(element, option, painter, widget);
}
}
void TouchProxyStyle::polish(QWidget *widget)
{
if (SB_Standard!=sbarType) {
if (qobject_cast<QScrollBar *>(widget)) {
if (isOnCombo(widget)) {
widget->setProperty(constOnCombo, true);
}
} else if (qobject_cast<QAbstractScrollArea *>(widget) && widget->inherits("QComboBoxListView")) {
QAbstractScrollArea *sa=static_cast<QAbstractScrollArea *>(widget);
QWidget *sb=sa->horizontalScrollBar();
if (sb) {
sb->setProperty(constOnCombo, true);
}
sb=sa->verticalScrollBar();
if (sb) {
sb->setProperty(constOnCombo, true);
}
}
}
if (Utils::touchFriendly()) {
if (qobject_cast<QAbstractScrollArea *>(widget)) {
FlickCharm::self()->activateOn(widget);
} else if (qobject_cast<QComboBox *>(widget)) {
QComboBox *combo=static_cast<QComboBox *>(widget);
combo->setItemDelegate(new ComboItemDelegate(combo));
}
}
ProxyStyle::polish(widget);
}