4 * This file is part of CameraPlus.
6 * Copyright (C) 2012-2013 Mohammed Sameer <msameer@foolab.org>
8 * This library is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2.1 of the License, or (at your option) any later version.
13 * This library is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with this library; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
23 #include "viewfinder.h"
25 #include "cameraconfig.h"
26 #include "qtcamviewfinderrenderer.h"
28 #include <QDeclarativeInfo>
33 #include "qtcamdevice.h"
37 Viewfinder::Viewfinder(QDeclarativeItem *parent) :
38 QDeclarativeItem(parent),
40 Viewfinder::Viewfinder(QQuickItem *parent) :
41 QQuickPaintedItem(parent),
49 setFlag(QGraphicsItem::ItemHasNoContents, false);
53 setRenderTarget(QQuickPaintedItem::FramebufferObject);
55 setAntialiasing(false);
59 Viewfinder::~Viewfinder() {
63 bool Viewfinder::isRenderingEnabled() const {
67 void Viewfinder::setRenderingEnabled(bool enabled) {
68 if (m_enabled != enabled) {
70 emit renderingEnabledChanged();
74 Camera *Viewfinder::camera() const {
78 void Viewfinder::setCamera(Camera *camera) {
79 if (m_cam == camera) {
83 if (m_cam && m_cam != camera) {
84 qmlInfo(this) << "Cannot reset Camera";
89 qmlInfo(this) << "Camera cannot be empty";
94 QObject::disconnect(m_cam, SIGNAL(deviceChanged()), this, SLOT(deviceChanged()));
100 QObject::connect(m_cam, SIGNAL(deviceChanged()), this, SLOT(deviceChanged()));
103 if (isComponentComplete()) {
107 emit cameraChanged();
110 CameraConfig *Viewfinder::cameraConfig() const {
114 void Viewfinder::setCameraConfig(CameraConfig *config) {
115 if (m_conf && m_conf != config) {
116 qmlInfo(this) << "Cannot reset CameraConfig";
121 qmlInfo(this) << "CameraConfig cannot be empty";
125 if (m_conf == config) {
131 if (isComponentComplete()) {
135 emit cameraConfigChanged();
139 void Viewfinder::paint(QPainter *painter, const QStyleOptionGraphicsItem *option,
144 painter->fillRect(boundingRect(), Qt::black);
146 void Viewfinder::paint(QPainter *painter) {
147 painter->fillRect(contentsBoundingRect(), Qt::black);
150 if (!m_renderer || !m_enabled) {
154 bool needsNativePainting = m_renderer->needsNativePainting();
156 if (needsNativePainting) {
157 painter->beginNativePainting();
160 m_renderer->paint(QMatrix4x4(painter->combinedTransform()), painter->viewport());
162 if (needsNativePainting) {
163 painter->endNativePainting();
167 QRectF Viewfinder::renderArea() const {
168 return m_renderer ? m_renderer->renderArea() : QRectF();
171 QSizeF Viewfinder::videoResolution() const {
172 return m_renderer ? m_renderer->videoResolution() : QSizeF();
175 void Viewfinder::geometryChanged(const QRectF& newGeometry, const QRectF& oldGeometry) {
177 QDeclarativeItem::geometryChanged(newGeometry, oldGeometry);
179 QQuickPaintedItem::geometryChanged(newGeometry, oldGeometry);
183 m_renderer->resize(newGeometry.size());
187 void Viewfinder::componentComplete() {
189 QDeclarativeItem::componentComplete();
191 QQuickPaintedItem::componentComplete();
195 qmlInfo(this) << "Camera not set";
200 qmlInfo(this) << "CameraConfig not set";
204 m_renderer = QtCamViewfinderRenderer::create(m_conf->config(), this);
206 qmlInfo(this) << "Failed to create viewfinder renderer";
210 m_renderer->resize(QSizeF(width(), height()));
211 QObject::connect(m_renderer, SIGNAL(updateRequested()), this, SLOT(updateRequested()));
212 QObject::connect(m_renderer, SIGNAL(renderAreaChanged()), this, SIGNAL(renderAreaChanged()));
213 QObject::connect(m_renderer, SIGNAL(videoResolutionChanged()), this, SIGNAL(videoResolutionChanged()));
216 void Viewfinder::deviceChanged() {
218 qmlInfo(this) << "No renderer";
222 QtCamDevice *dev = m_cam->device();
225 dev->setViewfinder(this);
228 emit renderAreaChanged();
229 emit videoResolutionChanged();
232 GstElement *Viewfinder::sinkElement() {
233 return m_renderer ? m_renderer->sinkElement() : 0;
236 bool Viewfinder::setDevice(QtCamDevice *device) {
242 void Viewfinder::stop() {
248 void Viewfinder::updateRequested() {