263 lines
9.3 KiB
C++
263 lines
9.3 KiB
C++
/*
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* Cantata
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*
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* Copyright (c) 2011-2012 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 "actionitemdelegate.h"
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#include "itemview.h"
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#include "icon.h"
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#include "config.h"
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#include "groupedview.h"
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#include <QtGui/QPainter>
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#include <QtGui/QAction>
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#include <QtGui/QPixmap>
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#include <QtGui/QListView>
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#include <QtGui/QHelpEvent>
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#include <QtGui/QToolTip>
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int ActionItemDelegate::constBorder = 1;
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int ActionItemDelegate::constActionBorder = 4;
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int ActionItemDelegate::constActionIconSize = 16;
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void ActionItemDelegate::setup()
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{
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int height=QApplication::fontMetrics().height();
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if (height>17) {
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constActionIconSize=Icon::stdSize(((int)(height/4))*4);
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constBorder=constActionIconSize>22 ? 2 : 1;
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constActionBorder=constActionIconSize>32 ? 6 : 4;
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} else {
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constActionBorder=4;
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constActionIconSize=16;
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constBorder=1;
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}
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}
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QRect ActionItemDelegate::calcActionRect(bool rtl, bool iconMode, const QRect &rect)
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{
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return rtl
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? iconMode
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? QRect(rect.x()+constActionBorder,
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rect.y()+constActionBorder,
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constActionIconSize, constActionIconSize)
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: QRect(rect.x()+constActionBorder,
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rect.y()+((rect.height()-constActionIconSize)/2),
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constActionIconSize, constActionIconSize)
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: iconMode
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? QRect(rect.x()+rect.width()-(constActionIconSize+constActionBorder),
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rect.y()+constActionBorder,
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constActionIconSize, constActionIconSize)
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: QRect(rect.x()+rect.width()-(constActionIconSize+constActionBorder),
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rect.y()+((rect.height()-constActionIconSize)/2),
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constActionIconSize, constActionIconSize);
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}
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void ActionItemDelegate::adjustActionRect(bool rtl, bool iconMode, QRect &rect)
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{
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if (rtl) {
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if (iconMode) {
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rect.adjust(0, constActionIconSize+constActionBorder, 0, constActionIconSize+constActionBorder);
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} else {
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rect.adjust(constActionIconSize+constActionBorder, 0, constActionIconSize+constActionBorder, 0);
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}
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} else {
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if (iconMode) {
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rect.adjust(0, constActionIconSize+constActionBorder, 0, constActionIconSize+constActionBorder);
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} else {
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rect.adjust(-(constActionIconSize+constActionBorder), 0, -(constActionIconSize+constActionBorder), 0);
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}
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}
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}
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bool ActionItemDelegate::hasActions(const QModelIndex &index, int actLevel)
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{
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if (actLevel<0) {
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return true;
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}
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int level=0;
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QModelIndex idx=index;
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while(idx.parent().isValid()) {
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if (++level>actLevel) {
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return false;
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}
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idx=idx.parent();
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}
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return true;
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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 void drawBgnd(QPainter *painter, const QRect &rx)
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{
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QRectF r(rx.x()-0.5, rx.y()-0.5, rx.width()+1, rx.height()+1);
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QPainterPath p(buildPath(r, 3.0));
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QColor c(Qt::white);
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painter->setRenderHint(QPainter::Antialiasing, true);
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c.setAlphaF(0.75);
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painter->fillPath(p, c);
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c.setAlphaF(0.95);
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painter->setPen(c);
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painter->drawPath(p);
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painter->setRenderHint(QPainter::Antialiasing, false);
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}
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void ActionItemDelegate::drawIcons(QPainter *painter, const QRect &r, bool mouseOver, bool rtl, bool iconMode, const QModelIndex &index) const
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{
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double opacity=painter->opacity();
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if (!mouseOver) {
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painter->setOpacity(opacity*0.2);
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}
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QRect actionRect=calcActionRect(rtl, iconMode, r);
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if (act1) {
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QPixmap pix=act1->icon().pixmap(QSize(constActionIconSize, constActionIconSize));
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if (!pix.isNull() && actionRect.width()>=pix.width()/* && r.x()>=0 && r.y()>=0*/) {
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drawBgnd(painter, actionRect);
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painter->drawPixmap(actionRect.x()+(actionRect.width()-pix.width())/2,
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actionRect.y()+(actionRect.height()-pix.height())/2, pix);
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}
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}
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if (act2) {
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if (act1) {
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adjustActionRect(rtl, iconMode, actionRect);
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}
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QPixmap pix=act2->icon().pixmap(QSize(constActionIconSize, constActionIconSize));
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if (!pix.isNull() && actionRect.width()>=pix.width()/* && r.x()>=0 && r.y()>=0*/) {
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drawBgnd(painter, actionRect);
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painter->drawPixmap(actionRect.x()+(actionRect.width()-pix.width())/2,
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actionRect.y()+(actionRect.height()-pix.height())/2, pix);
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}
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}
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if (toggle) {
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QIcon icon=index.data(ItemView::Role_ToggleIcon).value<QIcon>();
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if (!icon.isNull()) {
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if (act1 || act2) {
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adjustActionRect(rtl, iconMode, actionRect);
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}
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QPixmap pix=icon.pixmap(QSize(constActionIconSize, constActionIconSize));
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if (!pix.isNull() && actionRect.width()>=pix.width()/* && r.x()>=0 && r.y()>=0*/) {
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drawBgnd(painter, actionRect);
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painter->drawPixmap(actionRect.x()+(actionRect.width()-pix.width())/2,
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actionRect.y()+(actionRect.height()-pix.height())/2, pix);
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}
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}
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}
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if (!mouseOver) {
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painter->setOpacity(opacity);
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}
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}
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bool ActionItemDelegate::helpEvent(QHelpEvent *e, QAbstractItemView *view, const QStyleOptionViewItem &option, const QModelIndex &index)
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{
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if (QEvent::ToolTip==e->type() && (act1 || act2 || toggle)) {
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QAction *act=getAction(view, index);
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if (act) {
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if (act==toggle) {
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QString tt=index.data(ItemView::Role_ToggleToolTip).toString();
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if (!tt.isEmpty()) {
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QToolTip::showText(e->globalPos(), tt, view);
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return true;
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}
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}
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QToolTip::showText(e->globalPos(), act->toolTip(), view);
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return true;
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}
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}
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return QStyledItemDelegate::helpEvent(e, view, option, index);
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}
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QAction * ActionItemDelegate::getAction(QAbstractItemView *view, const QModelIndex &index) const
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{
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if (!hasActions(index, actLevel)) {
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return 0;
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}
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bool rtl = Qt::RightToLeft==QApplication::layoutDirection();
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QListView *lv=qobject_cast<QListView *>(view);
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GroupedView *gv=lv ? 0 : qobject_cast<GroupedView *>(view);
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bool iconMode=lv && QListView::ListMode!=lv->viewMode() && index.child(0, 0).isValid();
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QRect rect = view->visualRect(index);
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rect.moveTo(view->viewport()->mapToGlobal(QPoint(rect.x(), rect.y())));
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bool showCapacity = !index.data(ItemView::Role_CapacityText).toString().isEmpty();
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bool haveToggle = toggle && !index.data(ItemView::Role_ToggleIcon).value<QIcon>().isNull();
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if (gv || lv || showCapacity) {
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if (iconMode) {
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rect.adjust(ActionItemDelegate::constBorder, ActionItemDelegate::constBorder, -ActionItemDelegate::constBorder, -ActionItemDelegate::constBorder);
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} else {
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rect.adjust(ActionItemDelegate::constBorder+3, 0, -(ActionItemDelegate::constBorder+3), 0);
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}
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}
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if (showCapacity) {
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int textHeight=QFontMetrics(QApplication::font()).height();
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rect.adjust(0, 0, 0, -(textHeight+8));
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}
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QRect actionRect=ActionItemDelegate::calcActionRect(rtl, iconMode, rect);
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QRect actionRect2(actionRect);
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ActionItemDelegate::adjustActionRect(rtl, iconMode, actionRect2);
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actionRect=iconMode ? actionRect.adjusted(0, -2, 0, 2) : actionRect.adjusted(-2, 0, 2, 0);
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if (act1 && actionRect.contains(QCursor::pos())) {
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return act1;
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}
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if (act1) {
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ActionItemDelegate::adjustActionRect(rtl, iconMode, actionRect);
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}
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actionRect=iconMode ? actionRect.adjusted(0, -2, 0, 2) : actionRect.adjusted(-2, 0, 2, 0);
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if (act2 && actionRect.contains(QCursor::pos())) {
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return act2;
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}
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if (haveToggle) {
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if (act1 || act2) {
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ActionItemDelegate::adjustActionRect(rtl, iconMode, actionRect);
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}
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actionRect=iconMode ? actionRect.adjusted(0, -2, 0, 2) : actionRect.adjusted(-2, 0, 2, 0);
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if (toggle && actionRect.contains(QCursor::pos())) {
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return toggle;
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}
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}
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return 0;
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}
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