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() {
66 m_dev->setViewfinder(0);
70 bool Viewfinder::isRenderingEnabled() const {
74 void Viewfinder::setRenderingEnabled(bool enabled) {
75 if (m_enabled != enabled) {
77 emit renderingEnabledChanged();
81 Camera *Viewfinder::camera() const {
85 void Viewfinder::setCamera(Camera *camera) {
86 if (m_cam == camera) {
90 if (m_cam && m_cam != camera) {
91 qmlInfo(this) << "Cannot reset Camera";
96 qmlInfo(this) << "Camera cannot be empty";
101 QObject::disconnect(m_cam, SIGNAL(deviceChanged()), this, SLOT(deviceChanged()));
102 QObject::disconnect(m_cam, SIGNAL(prepareForDeviceChange()), this, SLOT(prepareForDeviceChange()));
108 QObject::connect(m_cam, SIGNAL(deviceChanged()), this, SLOT(deviceChanged()));
109 QObject::connect(m_cam, SIGNAL(prepareForDeviceChange()), this, SLOT(prepareForDeviceChange()));
112 if (isComponentComplete()) {
116 emit cameraChanged();
119 CameraConfig *Viewfinder::cameraConfig() const {
123 void Viewfinder::setCameraConfig(CameraConfig *config) {
124 if (m_conf && m_conf != config) {
125 qmlInfo(this) << "Cannot reset CameraConfig";
130 qmlInfo(this) << "CameraConfig cannot be empty";
134 if (m_conf == config) {
140 if (isComponentComplete()) {
144 emit cameraConfigChanged();
148 void Viewfinder::paint(QPainter *painter, const QStyleOptionGraphicsItem *option,
153 painter->fillRect(boundingRect(), Qt::black);
155 void Viewfinder::paint(QPainter *painter) {
156 painter->fillRect(contentsBoundingRect(), Qt::black);
159 if (!m_renderer || !m_enabled) {
163 bool needsNativePainting = m_renderer->needsNativePainting();
165 if (needsNativePainting) {
166 painter->beginNativePainting();
169 m_renderer->paint(QMatrix4x4(painter->combinedTransform()), painter->viewport());
171 if (needsNativePainting) {
172 painter->endNativePainting();
176 QRectF Viewfinder::renderArea() const {
177 return m_renderer ? m_renderer->renderArea() : QRectF();
180 QSizeF Viewfinder::videoResolution() const {
181 return m_renderer ? m_renderer->videoResolution() : QSizeF();
184 void Viewfinder::geometryChanged(const QRectF& newGeometry, const QRectF& oldGeometry) {
186 QDeclarativeItem::geometryChanged(newGeometry, oldGeometry);
188 QQuickPaintedItem::geometryChanged(newGeometry, oldGeometry);
192 m_renderer->resize(newGeometry.size());
196 void Viewfinder::componentComplete() {
198 QDeclarativeItem::componentComplete();
200 QQuickPaintedItem::componentComplete();
204 qmlInfo(this) << "Camera not set";
209 qmlInfo(this) << "CameraConfig not set";
213 m_renderer = QtCamViewfinderRenderer::create(m_conf->config(), this);
215 qmlInfo(this) << "Failed to create viewfinder renderer";
219 m_renderer->resize(QSizeF(width(), height()));
220 QObject::connect(m_renderer, SIGNAL(updateRequested()), this, SLOT(updateRequested()));
221 QObject::connect(m_renderer, SIGNAL(renderAreaChanged()), this, SIGNAL(renderAreaChanged()));
222 QObject::connect(m_renderer, SIGNAL(videoResolutionChanged()), this, SIGNAL(videoResolutionChanged()));
225 void Viewfinder::deviceChanged() {
227 qmlInfo(this) << "No renderer";
232 qmlInfo(this) << "Cannot set a new device without cleaning up the existing one";
236 m_dev = m_cam->device();
239 m_dev->setViewfinder(this);
242 emit renderAreaChanged();
243 emit videoResolutionChanged();
246 GstElement *Viewfinder::sinkElement() {
247 return m_renderer ? m_renderer->sinkElement() : 0;
250 void Viewfinder::stop() {
256 void Viewfinder::updateRequested() {
262 void Viewfinder::prepareForDeviceChange() {
264 m_dev->setViewfinder(0);