338 lines
12 KiB
C++
338 lines
12 KiB
C++
/*
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* Cantata
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*
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* Copyright (c) 2011-2014 Craig Drummond <craig.p.drummond@gmail.com>
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*
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* ----
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; see the file COPYING. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#include "gtkproxystyle.h"
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#include "gtkstyle.h"
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#include "shortcuthandler.h"
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#ifndef ENABLE_KDE_SUPPORT
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#include "acceleratormanager.h"
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#endif
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#include <QComboBox>
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#include <QSpinBox>
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#include <QScrollBar>
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#include <QAbstractScrollArea>
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#include <QAbstractItemView>
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#include <QMenu>
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#include <QToolBar>
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#include <QApplication>
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#include <QPainter>
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static const char * constOnCombo="on-combo";
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#ifndef ENABLE_KDE_SUPPORT
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static const char * constAccelProp="catata-accel";
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#endif
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static bool isOnCombo(const QWidget *w)
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{
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return w && (qobject_cast<const QComboBox *>(w) || isOnCombo(w->parentWidget()));
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}
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static QPainterPath buildPath(const QRectF &r, double radius)
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{
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QPainterPath path;
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double diameter(radius*2);
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path.moveTo(r.x()+r.width(), r.y()+r.height()-radius);
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path.arcTo(r.x()+r.width()-diameter, r.y(), diameter, diameter, 0, 90);
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path.arcTo(r.x(), r.y(), diameter, diameter, 90, 90);
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path.arcTo(r.x(), r.y()+r.height()-diameter, diameter, diameter, 180, 90);
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path.arcTo(r.x()+r.width()-diameter, r.y()+r.height()-diameter, diameter, diameter, 270, 90);
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return path;
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}
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static inline void addEventFilter(QObject *object, QObject *filter)
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{
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object->removeEventFilter(filter);
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object->installEventFilter(filter);
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}
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GtkProxyStyle::GtkProxyStyle(ScrollbarType sb, bool styleSpin, const QMap<QString, QString> &c, bool modView)
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: TouchProxyStyle(styleSpin)
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, sbarType(sb)
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, modViewFrame(modView)
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, css(c)
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{
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shortcutHander=new ShortcutHandler(this);
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if (SB_Standard!=sbarType) {
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QByteArray env=qgetenv("LIBOVERLAY_SCROLLBAR");
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if (!env.isEmpty() && env!="1") {
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sbarType=SB_Standard;
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}
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}
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setBaseStyle(qApp->style());
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if (SB_Standard!=sbarType) {
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int fh=QApplication::fontMetrics().height();
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sbarPlainViewWidth=fh/1.75;
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}
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}
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GtkProxyStyle::~GtkProxyStyle()
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{
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}
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QSize GtkProxyStyle::sizeFromContents(ContentsType type, const QStyleOption *option, const QSize &size, const QWidget *widget) const
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{
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QSize sz=TouchProxyStyle::sizeFromContents(type, option, size, widget);
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if (SB_Standard!=sbarType && CT_ScrollBar==type) {
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if (const QStyleOptionSlider *sb = qstyleoption_cast<const QStyleOptionSlider *>(option)) {
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int extent(pixelMetric(PM_ScrollBarExtent, option, widget)),
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sliderMin(pixelMetric(PM_ScrollBarSliderMin, option, widget));
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if (sb->orientation == Qt::Horizontal) {
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sz = QSize(sliderMin, extent);
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} else {
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sz = QSize(extent, sliderMin);
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}
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}
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}
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return sz;
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}
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int GtkProxyStyle::styleHint(StyleHint hint, const QStyleOption *option, const QWidget *widget, QStyleHintReturn *returnData) const
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{
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switch (hint) {
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case SH_DialogButtonBox_ButtonsHaveIcons:
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return false;
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case SH_UnderlineShortcut:
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return widget ? shortcutHander->showShortcut(widget) : true;
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case SH_ScrollView_FrameOnlyAroundContents:
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if (SB_Standard!=sbarType) {
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return false;
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}
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default:
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break;
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}
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return baseStyle()->styleHint(hint, option, widget, returnData);
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}
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int GtkProxyStyle::pixelMetric(PixelMetric metric, const QStyleOption *option, const QWidget *widget) const
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{
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if (SB_Standard!=sbarType && PM_ScrollBarExtent==metric) {
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return sbarPlainViewWidth;
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}
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return baseStyle()->pixelMetric(metric, option, widget);
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}
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QRect GtkProxyStyle::subControlRect(ComplexControl control, const QStyleOptionComplex *option, SubControl subControl, const QWidget *widget) const
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{
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if (SB_Standard!=sbarType && CC_ScrollBar==control) {
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if (const QStyleOptionSlider *sb = qstyleoption_cast<const QStyleOptionSlider *>(option)) {
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QRect ret;
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bool horizontal(Qt::Horizontal==sb->orientation);
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int sbextent(pixelMetric(PM_ScrollBarExtent, sb, widget)),
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sliderMaxLength(horizontal ? sb->rect.width() : sb->rect.height()),
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sliderMinLength(pixelMetric(PM_ScrollBarSliderMin, sb, widget)),
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sliderLength;
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if (sb->maximum != sb->minimum) {
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uint valueRange = sb->maximum - sb->minimum;
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sliderLength = (sb->pageStep * sliderMaxLength) / (valueRange + sb->pageStep);
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if (sliderLength < sliderMinLength) {
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sliderLength = sliderMinLength;
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}
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if (sliderLength > sliderMaxLength) {
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sliderLength = sliderMaxLength;
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}
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} else {
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sliderLength = sliderMaxLength;
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}
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int sliderstart(sliderPositionFromValue(sb->minimum, sb->maximum, sb->sliderPosition, sliderMaxLength - sliderLength, sb->upsideDown));
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// Subcontrols
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switch(subControl)
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{
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case SC_ScrollBarSubLine:
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case SC_ScrollBarAddLine:
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return QRect();
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case SC_ScrollBarSubPage:
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if (horizontal) {
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ret.setRect(0, 0, sliderstart, sbextent);
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} else {
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ret.setRect(0, 0, sbextent, sliderstart);
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}
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break;
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case SC_ScrollBarAddPage:
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if (horizontal) {
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ret.setRect(sliderstart + sliderLength, 0, sliderMaxLength - sliderstart - sliderLength, sbextent);
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} else {
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ret.setRect(0, sliderstart + sliderLength, sbextent, sliderMaxLength - sliderstart - sliderLength);
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}
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break;
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case SC_ScrollBarGroove:
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ret=QRect(0, 0, sb->rect.width(), sb->rect.height());
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break;
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case SC_ScrollBarSlider:
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if (horizontal) {
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ret=QRect(sliderstart, 0, sliderLength, sbextent);
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} else {
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ret=QRect(0, sliderstart, sbextent, sliderLength);
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}
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break;
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default:
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ret = baseStyle()->subControlRect(control, option, subControl, widget);
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break;
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}
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return visualRect(sb->direction/*Qt::LeftToRight*/, sb->rect, ret);
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}
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}
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return TouchProxyStyle::subControlRect(control, option, subControl, widget);
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}
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void GtkProxyStyle::drawComplexControl(ComplexControl control, const QStyleOptionComplex *option, QPainter *painter, const QWidget *widget) const
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{
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if (SB_Standard!=sbarType && CC_ScrollBar==control) {
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if (const QStyleOptionSlider *sb = qstyleoption_cast<const QStyleOptionSlider *>(option)) {
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QRect r=option->rect;
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QRect slider=subControlRect(control, option, SC_ScrollBarSlider, widget);
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painter->save();
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if (widget && widget->property(constOnCombo).toBool()) {
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painter->fillRect(r, QApplication::palette().color(QPalette::Background)); // option->palette.background());
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} else if (!widget || widget->testAttribute(Qt::WA_OpaquePaintEvent)) {
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if (option->palette.base().color()==Qt::transparent) {
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painter->fillRect(r, QApplication::palette().color(QPalette::Base));
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} else {
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painter->fillRect(r, option->palette.base());
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}
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}
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if (slider.isValid()) {
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bool inactive=!(sb->activeSubControls&SC_ScrollBarSlider && (option->state&State_MouseOver || option->state&State_Sunken));
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int adjust=inactive ? 3 : 1;
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painter->setRenderHint(QPainter::Antialiasing, true);
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if (Qt::Horizontal==sb->orientation) {
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slider.adjust(1, adjust, -1, -adjust);
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} else {
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slider.adjust(adjust, 1, -adjust, -1);
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}
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int dimension=(Qt::Horizontal==sb->orientation ? slider.height() : slider.width());
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QPainterPath path=buildPath(QRectF(slider.x()+0.5, slider.y()+0.5, slider.width()-1, slider.height()-1),
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dimension>6 ? (dimension/4.0) : (dimension/8.0));
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QColor col(option->palette.highlight().color());
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if (!(option->state&State_Active)) {
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col=col.darker(115);
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}
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painter->fillPath(path, col);
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painter->setPen(col);
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painter->drawPath(path);
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}
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painter->restore();
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return;
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}
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}
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TouchProxyStyle::drawComplexControl(control, option, painter, widget);
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}
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void GtkProxyStyle::drawPrimitive(PrimitiveElement element, const QStyleOption *option, QPainter *painter, const QWidget *widget) const
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{
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if (PE_PanelScrollAreaCorner==element && SB_Thin==sbarType && option) {
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painter->fillRect(option->rect, option->palette.brush(QPalette::Base));
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} else {
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baseStyle()->drawPrimitive(element, option, painter, widget);
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if (modViewFrame && PE_Frame==element && widget && widget->property(GtkStyle::constHideFrameProp).isValid()) {
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const QRect &r=option->rect;
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if (option->palette.base().color()==Qt::transparent) {
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painter->setPen(QPen(QApplication::palette().color(QPalette::Base), 1));
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} else {
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painter->setPen(QPen(option->palette.base(), 1));
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}
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if (Qt::LeftToRight==option->direction) {
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painter->drawLine(r.topRight()+QPoint(0, 1), r.bottomRight()+QPoint(0, -1));
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} else {
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painter->drawLine(r.topLeft()+QPoint(0, 1), r.bottomLeft()+QPoint(0, -1));
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}
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}
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}
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}
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void GtkProxyStyle::polish(QWidget *widget)
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{
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if (SB_Standard!=sbarType) {
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if (qobject_cast<QScrollBar *>(widget)) {
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if (isOnCombo(widget)) {
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widget->setProperty(constOnCombo, true);
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}
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} else if (qobject_cast<QAbstractScrollArea *>(widget) && widget->inherits("QComboBoxListView")) {
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QAbstractScrollArea *sa=static_cast<QAbstractScrollArea *>(widget);
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QWidget *sb=sa->horizontalScrollBar();
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if (sb) {
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sb->setProperty(constOnCombo, true);
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}
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sb=sa->verticalScrollBar();
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if (sb) {
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sb->setProperty(constOnCombo, true);
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}
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}
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}
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#ifndef ENABLE_KDE_SUPPORT
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if (widget && qobject_cast<QMenu *>(widget) && !widget->property(constAccelProp).isValid()) {
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AcceleratorManager::manage(widget);
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widget->setProperty(constAccelProp, true);
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}
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#endif
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// Apply CSS only to particular widgets. With Qt5.2 if we apply CSS to whole application, then QStyleSheetStyle does
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// NOT call sizeFromContents for spinboxes :-(
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if (widget->styleSheet().isEmpty()) {
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QMap<QString, QString>::ConstIterator it=css.end();
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if (qobject_cast<QToolBar *>(widget)) {
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it=css.find(QLatin1String(widget->metaObject()->className())+QLatin1Char('#')+widget->objectName());
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} else if (qobject_cast<QMenu *>(widget)) {
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it=css.find(QLatin1String(widget->metaObject()->className()));
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}
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if (css.end()!=it) {
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widget->setStyleSheet(it.value());
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}
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}
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TouchProxyStyle::polish(widget);
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}
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void GtkProxyStyle::polish(QPalette &pal)
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{
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baseStyle()->polish(pal);
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}
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void GtkProxyStyle::polish(QApplication *app)
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{
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addEventFilter(app, shortcutHander);
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baseStyle()->polish(app);
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}
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void GtkProxyStyle::unpolish(QWidget *widget)
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{
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baseStyle()->unpolish(widget);
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}
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void GtkProxyStyle::unpolish(QApplication *app)
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{
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app->removeEventFilter(shortcutHander);
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baseStyle()->unpolish(app);
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}
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