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"
36 Viewfinder::Viewfinder(QDeclarativeItem *parent) :
37 QDeclarativeItem(parent),
39 Viewfinder::Viewfinder(QQuickItem *parent) :
40 QQuickPaintedItem(parent),
48 setFlag(QGraphicsItem::ItemHasNoContents, false);
52 setRenderTarget(QQuickPaintedItem::FramebufferObject);
54 setAntialiasing(false);
58 Viewfinder::~Viewfinder() {
62 bool Viewfinder::isRenderingEnabled() const {
66 void Viewfinder::setRenderingEnabled(bool enabled) {
67 if (m_enabled != enabled) {
69 emit renderingEnabledChanged();
73 Camera *Viewfinder::camera() const {
77 void Viewfinder::setCamera(Camera *camera) {
78 if (m_cam == camera) {
82 if (m_cam && m_cam != camera) {
83 qmlInfo(this) << "Cannot reset Camera";
88 qmlInfo(this) << "Camera cannot be empty";
93 QObject::disconnect(m_cam, SIGNAL(deviceChanged()), this, SLOT(deviceChanged()));
99 QObject::connect(m_cam, SIGNAL(deviceChanged()), this, SLOT(deviceChanged()));
102 if (isComponentComplete()) {
106 emit cameraChanged();
109 CameraConfig *Viewfinder::cameraConfig() const {
113 void Viewfinder::setCameraConfig(CameraConfig *config) {
114 if (m_conf && m_conf != config) {
115 qmlInfo(this) << "Cannot reset CameraConfig";
120 qmlInfo(this) << "CameraConfig cannot be empty";
124 if (m_conf == config) {
130 if (isComponentComplete()) {
134 emit cameraConfigChanged();
138 void Viewfinder::paint(QPainter *painter, const QStyleOptionGraphicsItem *option,
143 painter->fillRect(boundingRect(), Qt::black);
145 void Viewfinder::paint(QPainter *painter) {
146 painter->fillRect(contentsBoundingRect(), Qt::black);
149 if (!m_renderer || !m_enabled) {
153 bool needsNativePainting = m_renderer->needsNativePainting();
155 if (needsNativePainting) {
156 painter->beginNativePainting();
159 m_renderer->paint(QMatrix4x4(painter->combinedTransform()), painter->viewport());
161 if (needsNativePainting) {
162 painter->endNativePainting();
166 QRectF Viewfinder::renderArea() const {
167 return m_renderer ? m_renderer->renderArea() : QRectF();
170 QSizeF Viewfinder::videoResolution() const {
171 return m_renderer ? m_renderer->videoResolution() : QSizeF();
174 void Viewfinder::geometryChanged(const QRectF& newGeometry, const QRectF& oldGeometry) {
176 QDeclarativeItem::geometryChanged(newGeometry, oldGeometry);
178 QQuickPaintedItem::geometryChanged(newGeometry, oldGeometry);
182 m_renderer->resize(newGeometry.size());
186 void Viewfinder::componentComplete() {
188 qmlInfo(this) << "Camera not set";
193 qmlInfo(this) << "CameraConfig not set";
197 m_renderer = QtCamViewfinderRenderer::create(m_conf->config(), this);
199 qmlInfo(this) << "Failed to create viewfinder renderer";
203 m_renderer->resize(QSizeF(width(), height()));
204 QObject::connect(m_renderer, SIGNAL(updateRequested()), this, SLOT(updateRequested()));
205 QObject::connect(m_renderer, SIGNAL(renderAreaChanged()), this, SIGNAL(renderAreaChanged()));
206 QObject::connect(m_renderer, SIGNAL(videoResolutionChanged()), this, SIGNAL(videoResolutionChanged()));
209 void Viewfinder::deviceChanged() {
211 qmlInfo(this) << "No renderer";
215 QtCamDevice *dev = m_cam->device();
218 dev->setViewfinder(this);
221 emit renderAreaChanged();
222 emit videoResolutionChanged();
225 GstElement *Viewfinder::sinkElement() {
226 return m_renderer ? m_renderer->sinkElement() : 0;
229 bool Viewfinder::setDevice(QtCamDevice *device) {
235 void Viewfinder::stop() {
241 void Viewfinder::updateRequested() {