210 lines
8.6 KiB
C++
210 lines
8.6 KiB
C++
/*
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* Cantata
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*
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* Copyright (c) 2011-2013 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 <QComboBox>
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#include <QToolBar>
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#include <QApplication>
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#include <QPainter>
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GtkProxyStyle::GtkProxyStyle()
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: QProxyStyle()
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{
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slimScrollbars=GtkStyle::themeName().toLower()==QLatin1String("ambiance");
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setBaseStyle(qApp->style());
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toolbarCombo=new QComboBox(new QToolBar());
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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=baseStyle()->sizeFromContents(type, option, size, widget);
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if (CT_ComboBox==type && widget && widget->parentWidget() && QString(widget->parentWidget()->metaObject()->className()).endsWith("Page")) {
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QSize orig=baseStyle()->sizeFromContents(type, option, size, widget);
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QSize other=baseStyle()->sizeFromContents(type, option, size, toolbarCombo);
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if (orig.height()>other.height()) {
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return QSize(orig.width(), other.height());
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}
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return orig;
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} else if (slimScrollbars && 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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if (slimScrollbars && SH_ScrollView_FrameOnlyAroundContents==hint) {
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return false;
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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 (slimScrollbars && PM_ScrollBarExtent==metric) {
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return (option ? option->fontMetrics.height() : QApplication::fontMetrics().height())/1.75;
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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 (slimScrollbars && 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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if (horizontal) {
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ret=QRect(0, 0, sb->rect.width(), sb->rect.height());
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} else {
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ret=QRect(0, 0, sb->rect.width(), sb->rect.height());
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}
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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 baseStyle()->subControlRect(control, option, subControl, widget);
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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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void GtkProxyStyle::drawComplexControl(ComplexControl control, const QStyleOptionComplex *option, QPainter *painter, const QWidget *widget) const
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{
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if (slimScrollbars && 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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painter->fillRect(r, option->palette.base());
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QColor col=option->palette.foreground().color();
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col.setAlphaF(0.15);
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painter->setPen(col);
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if (Qt::Horizontal==sb->orientation) {
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painter->drawLine(r.x(), r.y(), r.x()+r.width()-1, r.y());
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} else if (Qt::RightToLeft==QApplication::layoutDirection()) {
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painter->drawLine(r.x()+r.width()-1, r.y(), r.x()+r.width()-1, r.y()+r.height()-1);
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} else {
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painter->drawLine(r.x(), r.y(), r.x(), r.y()+r.height()-1);
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}
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if (slider.isValid()) {
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painter->setRenderHint(QPainter::Antialiasing, true);
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if (Qt::Horizontal==sb->orientation) {
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slider.adjust(0, 2, 0, -2);
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} else {
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slider.adjust(2, 0, -2, 0);
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}
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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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(Qt::Horizontal==sb->orientation ? r.height() : r.width())/4);
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QColor col(option->palette.highlight().color());
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if (option->state&State_Active && !(option->state&State_MouseOver)) {
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col.setAlphaF(0.75);
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}
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painter->fillPath(path, col);
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if (option->state&State_Active && !(option->state&State_MouseOver)) {
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col.setAlphaF(0.25);
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}
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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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baseStyle()->drawComplexControl(control, option, painter, widget);
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}
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