Mercurial > hg > easyhg
view panned.cpp @ 109:1721c580c10e
* Add a queueing mechanism for Hg actions, instead of refusing to start an action if something else is already happening. This is essential now that actions can be prompted by asynchronous events (e.g. filesystem watcher).
* Make Revert behave sensibly
author | Chris Cannam |
---|---|
date | Fri, 26 Nov 2010 12:48:29 +0000 |
parents | b0a90ac84b8b |
children | 2550aaa09240 |
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/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */ /* EasyMercurial Based on HgExplorer by Jari Korhonen Copyright (c) 2010 Jari Korhonen Copyright (c) 2010 Chris Cannam Copyright (c) 2010 Queen Mary, University of London 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. See the file COPYING included with this distribution for more information. */ #include "panned.h" #include <QScrollBar> #include <QWheelEvent> #include <iostream> Panned::Panned() { setRenderHints(QPainter::Antialiasing | QPainter::TextAntialiasing); } void Panned::resizeEvent(QResizeEvent *ev) { QPointF nearpt = mapToScene(0, 0); QPointF farpt = mapToScene(width(), height()); QSizeF sz(farpt.x()-nearpt.x(), farpt.y()-nearpt.y()); QRectF pr(nearpt, sz); if (pr != m_pannedRect) { m_pannedRect = pr; emit pannedRectChanged(pr); } QGraphicsView::resizeEvent(ev); } void Panned::paintEvent(QPaintEvent *e) { QGraphicsView::paintEvent(e); } void Panned::drawForeground(QPainter *paint, const QRectF &) { QPointF nearpt = mapToScene(0, 0); QPointF farpt = mapToScene(width(), height()); QSizeF sz(farpt.x()-nearpt.x(), farpt.y()-nearpt.y()); QRectF pr(nearpt, sz); if (pr != m_pannedRect) { if (pr.x() != m_pannedRect.x()) emit pannedContentsScrolled(); m_pannedRect = pr; emit pannedRectChanged(pr); } } void Panned::zoomIn() { QMatrix m = matrix(); m.scale(1.0 / 1.1, 1.0 / 1.1); setMatrix(m); } void Panned::zoomOut() { QMatrix m = matrix(); m.scale(1.1, 1.1); setMatrix(m); } void Panned::slotSetPannedRect(QRectF pr) { centerOn(pr.center()); // setSceneRect(pr); // m_pannedRect = pr; } void Panned::wheelEvent(QWheelEvent *ev) { if (ev->modifiers() & Qt::ControlModifier) { int d = ev->delta(); if (d > 0) { while (d > 0) { zoomOut(); d -= 120; } } else { while (d < 0) { zoomIn(); d += 120; } } } else { emit wheelEventReceived(ev); QGraphicsView::wheelEvent(ev); } } void Panned::slotEmulateWheelEvent(QWheelEvent *ev) { QGraphicsView::wheelEvent(ev); } void Panned::leaveEvent(QEvent *) { emit mouseLeaves(); }