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),
50 setFlag(QGraphicsItem::ItemHasNoContents, false);
54 setRenderTarget(QQuickPaintedItem::FramebufferObject);
56 setAntialiasing(false);
60 Viewfinder::~Viewfinder() {
64 bool Viewfinder::isRenderingEnabled() const {
68 void Viewfinder::setRenderingEnabled(bool enabled) {
69 if (m_enabled != enabled) {
71 emit renderingEnabledChanged();
75 Camera *Viewfinder::camera() const {
79 void Viewfinder::setCamera(Camera *camera) {
80 if (m_cam == camera) {
84 if (m_cam && m_cam != camera) {
85 qmlInfo(this) << "Cannot reset Camera";
90 qmlInfo(this) << "Camera cannot be empty";
95 QObject::disconnect(m_cam, SIGNAL(deviceChanged()), this, SLOT(deviceChanged()));
96 QObject::disconnect(m_cam, SIGNAL(prepareForDeviceChange()), this, SLOT(prepareForDeviceChange()));
102 QObject::connect(m_cam, SIGNAL(deviceChanged()), this, SLOT(deviceChanged()));
103 QObject::connect(m_cam, SIGNAL(prepareForDeviceChange()), this, SLOT(prepareForDeviceChange()));
106 if (isComponentComplete()) {
110 emit cameraChanged();
113 CameraConfig *Viewfinder::cameraConfig() const {
117 void Viewfinder::setCameraConfig(CameraConfig *config) {
118 if (m_conf && m_conf != config) {
119 qmlInfo(this) << "Cannot reset CameraConfig";
124 qmlInfo(this) << "CameraConfig cannot be empty";
128 if (m_conf == config) {
134 if (isComponentComplete()) {
138 emit cameraConfigChanged();
142 void Viewfinder::paint(QPainter *painter, const QStyleOptionGraphicsItem *option,
147 painter->fillRect(boundingRect(), Qt::black);
149 void Viewfinder::paint(QPainter *painter) {
150 painter->fillRect(contentsBoundingRect(), Qt::black);
153 if (!m_renderer || !m_enabled) {
157 bool needsNativePainting = m_renderer->needsNativePainting();
159 if (needsNativePainting) {
160 painter->beginNativePainting();
163 m_renderer->paint(QMatrix4x4(painter->combinedTransform()), painter->viewport());
165 if (needsNativePainting) {
166 painter->endNativePainting();
170 QRectF Viewfinder::renderArea() const {
171 return m_renderer ? m_renderer->renderArea() : QRectF();
174 QSizeF Viewfinder::videoResolution() const {
175 return m_renderer ? m_renderer->videoResolution() : QSizeF();
178 void Viewfinder::geometryChanged(const QRectF& newGeometry, const QRectF& oldGeometry) {
180 QDeclarativeItem::geometryChanged(newGeometry, oldGeometry);
182 QQuickPaintedItem::geometryChanged(newGeometry, oldGeometry);
186 m_renderer->resize(newGeometry.size());
190 void Viewfinder::componentComplete() {
192 QDeclarativeItem::componentComplete();
194 QQuickPaintedItem::componentComplete();
198 qmlInfo(this) << "Camera not set";
203 qmlInfo(this) << "CameraConfig not set";
207 m_renderer = QtCamViewfinderRenderer::create(m_conf->config(), this);
209 qmlInfo(this) << "Failed to create viewfinder renderer";
213 m_renderer->resize(QSizeF(width(), height()));
214 QObject::connect(m_renderer, SIGNAL(updateRequested()), this, SLOT(updateRequested()));
215 QObject::connect(m_renderer, SIGNAL(renderAreaChanged()), this, SIGNAL(renderAreaChanged()));
216 QObject::connect(m_renderer, SIGNAL(videoResolutionChanged()), this, SIGNAL(videoResolutionChanged()));
219 void Viewfinder::deviceChanged() {
221 qmlInfo(this) << "No renderer";
226 qmlInfo(this) << "Cannot set a new device without cleaning up the existing one";
230 m_dev = m_cam->device();
233 m_dev->setViewfinder(this);
236 emit renderAreaChanged();
237 emit videoResolutionChanged();
240 GstElement *Viewfinder::sinkElement() {
241 return m_renderer ? m_renderer->sinkElement() : 0;
244 void Viewfinder::stop() {
250 void Viewfinder::updateRequested() {
256 void Viewfinder::prepareForDeviceChange() {
258 m_dev->setViewfinder(0);