--- a/ui/views/fullscreenview/src/glxzoomcontrol.cpp Wed Jun 16 13:08:54 2010 +0100
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,316 +0,0 @@
-/*
-* Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).
-* All rights reserved.
-* This component and the accompanying materials are made available
-* under the terms of "Eclipse Public License v1.0"
-* which accompanies this distribution, and is available
-* at the URL "http://www.eclipse.org/legal/epl-v10.html".
-*
-* Initial Contributors:
-* Nokia Corporation - initial contribution.
-*
-* Contributors:
-*
-* Description: ?Description
-*
-*/
-
-#include "glxzoomcontrol.h"
-#include "glximagedecoderwrapper.h"
-#include "glxmodelparm.h"
-#include <hbicon.h>
-#include <glxmediamodel.h>
-#include <QtDebug>
-#include <hbinstance.h>
-#include <hbiconitem.h>
-#include <QDebug>
-
-GlxZoomControl::GlxZoomControl(QGraphicsItem *parent) : HbScrollArea(parent),mIsControlActivated(false), mIsItemChanged(true)
-{
- setScrollDirections(Qt::Horizontal | Qt::Vertical);
- hide();
- setZValue(6);
- setScrollingStyle(PanOrFlick);
- mBlackBackgroundItem = new HbIconItem(parent);
- mBlackBackgroundItem->setBrush(QBrush(Qt::black));
- mBlackBackgroundItem->hide();
- mZoomWidget = new QGraphicsWidget(this);
- mZoomItem = new QGraphicsPixmapItem(mZoomWidget);
- mImageDecoder = new GlxImageDecoderWrapper;
-
-}
-
-GlxZoomControl::~GlxZoomControl()
-{
- resetZoomControl();
- delete mZoomItem;
- delete mZoomWidget;
- mImageDecoder->resetDecoder();
- delete mImageDecoder;
- delete mBlackBackgroundItem;
-
-}
-
-void GlxZoomControl::zoomImage(int zoomFactor)
-{
- qDebug("@@@GlxZoomControl::zoomImage ZF=%d, InitialZf=%d", zoomFactor, mInitialZoomFactor);
- if(mIsItemChanged) {
- initializeZoomControl(zoomFactor);
- }
- if(zoomFactor > mInitialZoomFactor) {
-
- qreal zoomPercent = qreal(zoomFactor)/100.00;
- QSizeF requiredSize = QSize(qreal(mItemSize.width() * zoomPercent), qreal(mItemSize.height() * zoomPercent ));
- calculatePanOffset();
- mZoomWidget->scale(requiredSize.width()/mCurrentSize.width(), requiredSize.height()/mCurrentSize.height());
- qDebug()<<"GlxZoomControl::zoomImage scaling factor"<<requiredSize.width()/mCurrentSize.width()<<requiredSize.height()/mCurrentSize.height();
- qDebug()<<"GlxZoomControl::zoomImage required Size"<<requiredSize.width()<<requiredSize.height();
- qDebug()<<"GlxZoomControl::zoomImage current Size"<<mCurrentSize.width()<<mCurrentSize.height();
- qDebug()<<"GlxZoomControl::zoomImage item Size"<<mItemSize.width()<<mItemSize.height();
-
- //mZoomWidget->setGeometry(QRectF(-0.5*QPointF(requiredSize.width(),requiredSize.height()),requiredSize ));
- //mZoomWidget->setPos(mWindowSize.width()/2 - requiredSize.width()/2,mWindowSize.height()/2 - requiredSize.height()/2);
- mCurrentSize = requiredSize;
- mCurrentZoomFactor = zoomFactor;
- updateItemPosition();
- if(!mIsControlActivated) {
- show();
- mBlackBackgroundItem->show();
- mIsControlActivated = true;
- emit hideFullScreenUi();
- }
- }
- if(zoomFactor < mInitialZoomFactor)
- {
- mBlackBackgroundItem->hide();
- hide();
- mPanOffset.setX(0);
- mPanOffset.setY(0);
- updateItemPosition();
- mIsControlActivated = false;
- //mZoomWidget->resetTransform();
- }
-}
-
-void GlxZoomControl::initializeZoomControl(int zoomFactor)
-{
- qDebug("@@@GlxZoomControl::initializeZoomControl Zoom Factor %d", zoomFactor);
- if(mIsControlActivated || zoomFactor < mInitialZoomFactor)
- {
- return;
- }
- qDebug("@@@GlxZoomControl::initializeZoomControl Context not activated yet");
- //get the image path and request for a decoded pixmap first
- QString imagePath = (mModel->data(mModel->index(mModel->data(mModel->index(0,0),GlxFocusIndexRole).value<int>(),0),GlxUriRole)).value<QString>();
- mImageDecoder->decodeImage(imagePath);
- connect(mImageDecoder, SIGNAL(pixmapDecoded()), this, SLOT(decodedImageAvailable()));
- QVariant variant = mModel->data(mModel->index(mModel->data(mModel->index(0,0),GlxFocusIndexRole).value<int>(),0),GlxFsImageRole);
- if ( variant.isValid() && variant.canConvert<HbIcon> () ) {
- qDebug("@@@GlxZoomControl::initializeZoomControl valid icon");
- QIcon itemIcon = variant.value<HbIcon>().qicon();
- //QSize windowSize(360,640);
- QSize itemSize = itemIcon.actualSize(mWindowSize);
- QPixmap itemPixmap = itemIcon.pixmap(itemSize);
- //if(itemPixmap.isNull())
- qDebug("@@@GlxZoomControl::initializeZoomControl Null Pixmap");
- //set item size to the actual size
- mItemSize = (mModel->data(mModel->index(mModel->data(mModel->index(0,0),GlxFocusIndexRole).value<int>(),0),GlxDimensionsRole)).value<QSize>();
- mCurrentSize = itemPixmap.size();
- mZoomItem->setPixmap(itemPixmap);
- mZoomWidget->setGeometry(QRectF(-0.5*QPointF(mCurrentSize.width(),mCurrentSize.height()),mItemSize ));
- mZoomWidget->setPos(mWindowSize.width()/2 - mCurrentSize.width()/2,mWindowSize.height()/2 - mCurrentSize.height()/2);
- //show();
- //mIsControlActivated = true;
- mIsItemChanged = false;
- setContentWidget(mZoomWidget);
- }
-}
-
-void GlxZoomControl::setModel(QAbstractItemModel *model)
-{
- GlxMediaModel *glxModel = dynamic_cast<GlxMediaModel *>(model);
- if ( glxModel ==NULL || glxModel == mModel) {
- return ;
- }
- mModel = glxModel;
-}
-
-void GlxZoomControl::resetZoomControl()
-{
- qDebug("@@@GlxZoomControl::resetZoomControl");
- mBlackBackgroundItem->hide();
- hide();
- mZoomWidget->resetTransform();
- mZoomItem->setPixmap(QPixmap());
- mItemSize = QSizeF(0,0);
- mCurrentSize = mItemSize;
- mIsControlActivated = false;
- mIsItemChanged = true;
- mInitialZoomFactor = 0;
- mPanOffset.setX(0);
- mPanOffset. setY(0);
- mImageDecoder->resetDecoder();
-}
-
-void GlxZoomControl::indexChanged(int index)
-{
- Q_UNUSED(index);
- qDebug("@@@GlxZoomControl::indexChanged");
- resetZoomControl();
-
-}
-
-void GlxZoomControl::decodedImageAvailable()
-{
- //new bitmap with better resolution is available
- //so set it to the item
- QPixmap decodedPixmap = mImageDecoder->getPixmap();
- if(decodedPixmap.isNull()){
- return;
- }
- mCurrentSize = decodedPixmap.size();
- //this is important if not done then old transforms will be applied on the new image
- mZoomWidget->resetTransform();
- mZoomItem->setPixmap(decodedPixmap);
- QPointF undefferedPos;
- undefferedPos.setX(mWindowSize.width()/2 - mCurrentSize.width()/2);
- undefferedPos.setY(mWindowSize.height()/2 - mCurrentSize.height()/2);
- mZoomWidget->setGeometry(QRectF(undefferedPos,mCurrentSize )); //temporarily setting it to an undeffered position
- //update the image transforms
- zoomImage(mCurrentZoomFactor);
-}
-
-void GlxZoomControl::initialZoomFactor(int initZoomFactor)
-{
- qDebug("@@@GlxZoomControl::initialZoomFactor initZoomFactor=%d", initZoomFactor );
- resetZoomControl();
- mInitialZoomFactor = initZoomFactor;
-}
-
-void GlxZoomControl::setWindowSize (QSize windowSize)
-{
- if(mWindowSize != windowSize) {
- mWindowSize = windowSize;
- mBlackBackgroundItem->setSize(mWindowSize);
- mBlackBackgroundItem->setPos(0,0);
- if(!mIsItemChanged) {
- //first calculate offset because after orientation change this value will be lost
- calculatePanOffset();
- //update the item position WRT the new window size
- updateItemPosition();
-
- }
- }
-}
-void GlxZoomControl::updateItemPosition()
-{
- qreal zoomPercent = qreal(mCurrentZoomFactor)/100.00;
- QPointF undefferedPos;
- //calculate position if no panning was done
- undefferedPos.setX(mWindowSize.width()/2 - mCurrentSize.width()/2);
- undefferedPos.setY(mWindowSize.height()/2 - mCurrentSize.height()/2);
- QPointF offset = mPanOffset;
- //convert offset value WRT current zoomFactor
- offset *= zoomPercent;
- QPointF finalPos = undefferedPos + offset;
- //check for boundry conditions
- checkandAdjustImageBoundaries(finalPos, undefferedPos);
- qDebug()<<"GlxZoomControl::updateItemPosition offset x%d, y%d "<<offset.x()<< offset.y();
- //mZoomWidget->setPos(undefferedPos + offset);
- mZoomWidget->setGeometry(QRectF(finalPos,mCurrentSize ));
-}
-
-void GlxZoomControl::calculatePanOffset()
-{
- qreal zoomPercent = qreal(mCurrentZoomFactor)/100.00;
- QPointF currentPos = mZoomWidget->pos();
- //calculate position if no panning was done
- QPointF undefferedPos;
- undefferedPos.setX(mWindowSize.width()/2 - mCurrentSize.width()/2);
- undefferedPos.setY(mWindowSize.height()/2 - mCurrentSize.height()/2);
- //get the offset with the current zoomFactor which is the difference between currentPos and undefferedPos
- QPointF offset = currentPos - undefferedPos ;
- qDebug()<<"GlxZoomControl::calculatePanOffset current Pos x%d, y%d undeffered x %d, y %d"<<currentPos.x()<< currentPos.y()<< undefferedPos.x()<< undefferedPos.y();
- mPanOffset = offset;
- //convert the offset value WRT a 100% zoomed image as that will be used for reference
- mPanOffset /= zoomPercent;
- qDebug()<<"GlxZoomControl::calculatePanOffset mPanOffset x%d, y%d "<<mPanOffset.x()<< mPanOffset.y();
-}
-
-void GlxZoomControl::checkandAdjustImageBoundaries(QPointF &finalPos, QPointF undefferedPos)
-{
- //check for boundary conditions in X Axis
-
- //for Left side
- //since the image is positioned WRT to screens top left corner(0,0) so if the images top left corner's X (finalPos.x()) is positive
- //then boundry conditions for image to be on the leftmost side is met
- if(finalPos.x() > 0) {
- //chk if the original image position without any offset has also reached boundry conditions
- if(undefferedPos.x() < 0) {
- //set the image to the leftmost axis on the screen
- finalPos.setX(0);
- }
- //if original image position without any offset has also reached boundry conditions then use the undefferedPos
- else {
- finalPos.setX(undefferedPos.x());
- //set offset to 0 as it is of no use anymore
- mPanOffset.setX(0);
- }
- }
-
- //Right side
- //since the image is positioned WRT to screens top left corner(0,0) so if image Position added to the image dimensions is
- //greater than the screen dimensions then boundfy conditions for rightmost and lowest points are met.
- //for X axis width will be of our concern
- if((finalPos.x() + mCurrentSize.width()) < mWindowSize.width()){
- //if original image position without any offset has also reached boundry conditions then use the undefferedPos
- if ((undefferedPos.x() + mCurrentSize.width()) < mWindowSize.width()) {
- finalPos.setX(undefferedPos.x());
- //set offset to 0 as it is of no use anymore
- mPanOffset.setX(0);
- }
- else {
- //set the image to the rightmost axis on the screen
- finalPos.setX(mWindowSize.width()- mCurrentSize.width());
- }
- }
-
-
- //check for boundary conditions in Y Axis
-
- //top
- //since the image is positioned WRT to screens top left corner(0,0) so if the images top left corner's Y (finalPos.y()) is positive
- //then boundry conditions for image to be on the topmost side is met
- if(finalPos.y() > 0) {
- //chk if the original image position without any offset has also reached boundry conditions
- if(undefferedPos.y() < 0) {
- //set the image to the topmost axis on the screen
- finalPos.setY(0);
- }
- //if original image position without any offset has also reached boundry conditions then use the undefferedPos
- else {
- finalPos.setY(undefferedPos.y());
- //set offset to 0 as it is of no use anymore
- mPanOffset.setY(0);
- }
- }
-
- //bottom
- //since the image is positioned WRT to screens top left corner(0,0) so if image Position added to the image dimensions is
- //greater than the screen dimensions then boundfy conditions for rightmost and lowest points are met.
- //for Y axis height will be of our concern
-
- if((finalPos.y() + mCurrentSize.height()) < mWindowSize.height()){
- //if original image position without any offset has also reached boundry conditions then use the undefferedPos
- if ((undefferedPos.y() + mCurrentSize.height()) < mWindowSize.height()) {
- finalPos.setY(undefferedPos.y());
- //set offset to 0 as it is of no use anymore
- mPanOffset.setY(0);
- }
- else {
- //set the image to the lowest axis on the screen
- finalPos.setY(mWindowSize.height()- mCurrentSize.height());
- }
- }
-
-}