Android screen res problem (it's always 640x480 instead of maximized) -- Qt 5.1, XP

Good time of the day!

I'm struggling for two days with a problem, which appears with the android build (latest Qt 5.1 and Qt Creator 2.7.2) on WinXP (but I think it don't matter), latest NDK, SDK, and WinAnt. In two words, android app always uses 640x480 resolution! The problem disappers once when I manually cleaned all the files built in the project, including *.pro.user, and rebuilt project from scratch. But one build later the problem returns (code changes cannot affect this, I'm sure). I didn't tried for more than one time to cleanup the project, because I think the problem is not in project properties (which hasn't changed between launches).

Please at picture attached. The situation is not only on emulator occurs, but on the real device too. However, windows app running as expected.

The actual code is the following:
main.cpp

Code:

---

#include "mainwindow.h"
#include "mainwidget.h"
 
#include <QApplication>
#include <QTime>
 
int main(int argc, char *argv[])
{    
    QApplication app(argc, argv);
 
    qsrand(QTime(0,0,0).secsTo(QTime::currentTime()));
 
    MainWindow main_window;
    main_window.showMaximized();
    main_window.setCentralWidget(new MainWidget(&main_window));
 
    return app.exec();
}

---

mainwindow.h

Code:

---

#ifndef MAINWINDOW_H
#define MAINWINDOW_H
 
#include <QMainWindow>
 
class MainWindow : public QMainWindow
{
    Q_OBJECT
 
public:
    MainWindow(QWidget *parent = 0);
    ~MainWindow();
};
 
#endif // MAINWINDOW_H

---

mainwidget.h

Code:

---

#ifndef MAINWIDGET_H
#define MAINWIDGET_H
 
#include <QGraphicsView>
 
class QGraphicsScene;
class QImage;
class QGraphicsPixmapItem;
 
class MainWidget : public QGraphicsView
{
    Q_OBJECT
public:
    explicit MainWidget(QWidget *parent);
protected:
    void drawBackground(QPainter *painter, const QRectF& rect);
 
private:
 
    void createGameScene();
 
    QGraphicsScene      * scene;
    QWidget             * parent;
    QGraphicsPixmapItem * splash, * score, * blueMeeple, * redMeeple;
 
private slots:
    void unsetSplash();
 
};
 
#endif // MAINWIDGET_H

---

[/code]

mainwindow.cpp

Code:

---

#include "mainwindow.h"
 
MainWindow::MainWindow(QWidget *parent)
    : QMainWindow(parent) {
    setStyleSheet("background-color: darkGrey;");
}
 
MainWindow::~MainWindow() {
 
}

---

mainwidget.cpp

Code:

---

#include "mainwidget.h"
 
#include <QGraphicsScene>
#include <QGraphicsPixmapItem>
#include <QTimer>
 
MainWidget::MainWidget(QWidget *parentWidget):
    QGraphicsView(parentWidget), parent(parentWidget), splash(0), score(0) {
    scene = new QGraphicsScene;
    scene->setItemIndexMethod(QGraphicsScene::NoIndex);
 
    setScene(scene);
 
    setCacheMode(CacheBackground);
    setViewportUpdateMode(FullViewportUpdate);
    setRenderHint(QPainter::Antialiasing);
 
    scene->addItem(splash = new QGraphicsPixmapItem(QPixmap(":/images/DiscoveryArt.jpg")));
    QTimer::singleShot(2000, this, SLOT(unsetSplash()));
}
 
void MainWidget::drawBackground(QPainter *painter, const QRectF& rect) {
    scene->setSceneRect(20, 20, parent->geometry().width() - 20, parent->geometry().height() - 20);
    QRectF scene_rect = scene->sceneRect();
 
    if (splash)
        splash->setPos(mapToScene(rect.width()/2 - splash->pixmap().width()/2,
                                  rect.height()/2 - splash->pixmap().height()/2));
 
    QRectF right_shadow(scene_rect.right(), scene_rect.top() + 5, 5, scene_rect.height());
    QRectF bottom_shadow(scene_rect.left() + 5, scene_rect.bottom(), scene_rect.width(), 5);
 
    if (right_shadow.intersects(rect) || right_shadow.contains(rect))
        painter->fillRect(right_shadow, Qt::darkGray);
 
    if (bottom_shadow.intersects(rect) || bottom_shadow.contains(rect))
        painter->fillRect(bottom_shadow, Qt::darkGray);
 
    QLinearGradient gradient(scene_rect.topLeft(), scene_rect.bottomRight());
    gradient.setColorAt(0, Qt::white);
    gradient.setColorAt(1, Qt::lightGray);
    painter->fillRect(rect.intersected(scene_rect), gradient);
    painter->setBrush(Qt::NoBrush);
    painter->drawRect(scene_rect);
}
 
void MainWidget::unsetSplash() {
    scene->removeItem(splash);
    delete splash;
    splash = 0;
    createGameScene();
    update();
}
 
void MainWidget::createGameScene() {
    scene->addItem(score = new QGraphicsPixmapItem(QPixmap(":/images/DiscoveryScore.jpg")));
    score->setPos(mapToScene(scene->sceneRect().top(),scene->sceneRect().left()));
    scene->addItem(redMeeple = new QGraphicsPixmapItem(QPixmap(":/images/DiscoveryRedMeeple.png")));
    redMeeple->setPos(score->boundingRect().left() + 30, score->boundingRect().bottom() - 20);
    scene->addItem(blueMeeple = new QGraphicsPixmapItem(QPixmap(":/images/DiscoveryBlueMeeple.png")));
    blueMeeple->setPos(score->boundingRect().left() + 60, score->boundingRect().bottom() - 20);
}

---

*.pro file

Code:

---

#-------------------------------------------------
#
# Project created by QtCreator 2013-07-16T22:21:30
#
#-------------------------------------------------
 
QT       += core gui
 
greaterThan(QT_MAJOR_VERSION, 4): QT += widgets
 
TARGET = Discovery
TEMPLATE = app
 
RESOURCES     = discovery.qrc
 
SOURCES += main.cpp\
        mainwindow.cpp \
    mainwidget.cpp
 
HEADERS  += mainwindow.h \
    mainwidget.h
 
CONFIG += mobility
MOBILITY = 
 
OTHER_FILES += \
    android/AndroidManifest.xml \
    android/res/layout/splash.xml \
    android/res/values/libs.xml \
    android/res/values/strings.xml \
    android/res/values-de/strings.xml \
    android/res/values-el/strings.xml \
    android/res/values-es/strings.xml \
    android/res/values-et/strings.xml \
    android/res/values-fa/strings.xml \
    android/res/values-fr/strings.xml \
    android/res/values-id/strings.xml \
    android/res/values-it/strings.xml \
    android/res/values-ja/strings.xml \
    android/res/values-ms/strings.xml \
    android/res/values-nb/strings.xml \
    android/res/values-nl/strings.xml \
    android/res/values-pl/strings.xml \
    android/res/values-pt-rBR/strings.xml \
    android/res/values-ro/strings.xml \
    android/res/values-rs/strings.xml \
    android/res/values-ru/strings.xml \
    android/res/values-zh-rCN/strings.xml \
    android/res/values-zh-rTW/strings.xml \
    android/src/org/kde/necessitas/ministro/IMinistro.aidl \
    android/src/org/kde/necessitas/ministro/IMinistroCallback.aidl \
    android/src/org/qtproject/qt5/android/bindings/QtActivity.java \
    android/src/org/qtproject/qt5/android/bindings/QtApplication.java \
    android/version.xml \
    android/AndroidManifest.xml \
    android/res/layout/splash.xml \
    android/res/values/libs.xml \
    android/res/values/strings.xml \
    android/res/values-de/strings.xml \
    android/res/values-el/strings.xml \
    android/res/values-es/strings.xml \
    android/res/values-et/strings.xml \
    android/res/values-fa/strings.xml \
    android/res/values-fr/strings.xml \
    android/res/values-id/strings.xml \
    android/res/values-it/strings.xml \
    android/res/values-ja/strings.xml \
    android/res/values-ms/strings.xml \
    android/res/values-nb/strings.xml \
    android/res/values-nl/strings.xml \
    android/res/values-pl/strings.xml \
    android/res/values-pt-rBR/strings.xml \
    android/res/values-ro/strings.xml \
    android/res/values-rs/strings.xml \
    android/res/values-ru/strings.xml \
    android/res/values-zh-rCN/strings.xml \
    android/res/values-zh-rTW/strings.xml \
    android/src/org/kde/necessitas/ministro/IMinistro.aidl \
    android/src/org/kde/necessitas/ministro/IMinistroCallback.aidl \
    android/src/org/qtproject/qt5/android/bindings/QtActivity.java \
    android/src/org/qtproject/qt5/android/bindings/QtApplication.java \
    android/version.xml

---

Please help me to solve the issue, I can't develop further with this behavior.
Thanks in advance, Andrey

This is a very very strange. I've cleaned the project once more, rebuilt Debug and Release version and no effect in emulator (the issue stays). But on real device release version works ok. I can think it's the problem of emulator, but anytimes screen resolution isn't ok on real device too. I'm confused :confused: :(

It seems to be solved.
I've refused from QMainWindow container and used QGraphicsView widget as a main widget, but this is not the main point. The problem was in not using resize:

Code:

---

QDesktopWidget desktop;
 
    MainWidget main_window;
    main_window.move(0,0);
    main_window.resize(desktop.availableGeometry().width(), desktop.availableGeometry().height());
    main_window.showMaximized();

---

But now I found another problem. I'll not spawn a new thread, will post here. Please look at the pictures attached.
I use mingw complier, included in QtCreator + Qt5.1 distribution. All dynamic libraries are included into package (otherwise the app wouldn't start).

On WinXP 32bit the scene and the splash are alright, but on Win7 64bit only the "starter tile" is on place, other items are off the scene rect...
The one binary gives different results on the platforms. Maybe my use of QGraphicsView/QGraphicsScene is inappropriate?

What can I do? Any help appreciated.

Code:

---

void MainWidget::drawBackground(QPainter *painter, const QRectF& rect) {
    scene->setSceneRect(20, 20, geometry().width() - 20, geometry().height() - 20);
    QRectF scene_rect = scene->sceneRect();
 
    if (splash) {
        splash->setPos(scene_rect.left() + scene_rect.width()/2 - splash->pixmap().width()/2,
                       scene_rect.top() + scene_rect.height()/2 - splash->pixmap().height()/2);
        return;
    } else
        setCacheMode(CacheBackground);
 
    QRectF right_shadow(scene_rect.right(), scene_rect.top() + 5, 5, scene_rect.height());
    QRectF bottom_shadow(scene_rect.left() + 5, scene_rect.bottom(), scene_rect.width(), 5);
 
    if (right_shadow.intersects(rect) || right_shadow.contains(rect))
        painter->fillRect(right_shadow, Qt::darkGray);
 
    if (bottom_shadow.intersects(rect) || bottom_shadow.contains(rect))
        painter->fillRect(bottom_shadow, Qt::darkGray);
 
    QLinearGradient gradient(scene_rect.topLeft(), scene_rect.bottomRight());
    gradient.setColorAt(0, Qt::white);
    gradient.setColorAt(1, Qt::lightGray);
    painter->fillRect(scene_rect, gradient);
    painter->setBrush(Qt::NoBrush);
    painter->drawRect(scene_rect);
}
 
// ...
void MainWidget::createGameScene() {
    scene->addItem(score = new QGraphicsPixmapItem(QPixmap(":/images/DiscoveryScore.jpg")));
    score->setPos(scene->sceneRect().left(), scene->sceneRect().top());
    scene->addItem(redMeeple = new QGraphicsPixmapItem(QPixmap(":/images/DiscoveryRedMeeple.png")));
    redMeeple->setPos(scene->sceneRect().left() + 5,
                      scene->sceneRect().top() + score->boundingRect().height() - redMeeple->boundingRect().height());
    scene->addItem(blueMeeple = new QGraphicsPixmapItem(QPixmap(":/images/DiscoveryBlueMeeple.png")));
    blueMeeple->setPos(scene->sceneRect().left() + 35,
                       scene->sceneRect().top() + score->boundingRect().height() - blueMeeple->boundingRect().height());
 
    TileItem * starter = new TileItem(this);
    starter->setTileNumber(0, true);
    starter->setI(84); starter->setJ(84); starter->setPut();
    starter->setFlag(QGraphicsItem::ItemIsMovable, false);
    starter->setPos(scene->sceneRect().left() + scene->sceneRect().width()/2 - starter->pixmap().width()/2,
                    scene->sceneRect().top() + scene->sceneRect().height()/2 - starter->pixmap().height()/2);
    scene->addItem(starter);
    tilesMap[84][84] = starter;
 
    for (qint8 i = 1; i < 84; ++i)
        restTiles << i;
 
    TileItem * first_tile = new TileItem(this);
    first_tile->setTileNumber(qrand() % 83 + 1);
    first_tile->setPos(score->boundingRect().width() + scene->sceneRect().left() - first_tile->boundingRect().width(),
                       score->boundingRect().height() + scene->sceneRect().top());
    scene->addItem(first_tile);
}

---

Have found the solution. In deployment Windows documentation is nothing about need of adding imageformats/ folder in package. JPEG pictures were the problem without adding imageformats (png are ok).