diff options
Diffstat (limited to 'examples/qpa/windows')
-rw-r--r-- | examples/qpa/windows/main.cpp | 31 | ||||
-rw-r--r-- | examples/qpa/windows/window.cpp | 158 | ||||
-rw-r--r-- | examples/qpa/windows/window.h | 33 | ||||
-rw-r--r-- | examples/qpa/windows/windows.pro | 15 |
4 files changed, 237 insertions, 0 deletions
diff --git a/examples/qpa/windows/main.cpp b/examples/qpa/windows/main.cpp new file mode 100644 index 0000000000..e4cd14398c --- /dev/null +++ b/examples/qpa/windows/main.cpp @@ -0,0 +1,31 @@ +#include <QGuiApplication> +#include <QScreen> + +#include "window.h" + +int main(int argc, char **argv) +{ + QGuiApplication app(argc, argv); + + Window a; + a.setVisible(true); + + Window b; + b.setVisible(true); + + Window child(&b); + child.setVisible(true); + + // create one window on each additional screen as well + + QList<QScreen *> screens = app.screens(); + foreach (QScreen *screen, screens) { + if (screen == app.primaryScreen()) + continue; + Window *window = new Window(screen); + window->setVisible(true); + window->setWindowTitle(screen->name()); + } + + return app.exec(); +} diff --git a/examples/qpa/windows/window.cpp b/examples/qpa/windows/window.cpp new file mode 100644 index 0000000000..fecc22034a --- /dev/null +++ b/examples/qpa/windows/window.cpp @@ -0,0 +1,158 @@ +#include "window.h" + +#include <private/qguiapplication_p.h> + +#include <QBackingStore> +#include <QPainter> + +static int colorIndexId = 0; + +QColor colorTable[] = +{ + QColor("#f09f8f"), + QColor("#a2bff2"), + QColor("#c0ef8f") +}; + +Window::Window(QScreen *screen) + : QWindow(screen) + , m_backgroundColorIndex(colorIndexId++) +{ + initialize(); +} + +Window::Window(QWindow *parent) + : QWindow(parent) + , m_backgroundColorIndex(colorIndexId++) +{ + initialize(); +} + +void Window::initialize() +{ + if (parent()) + setGeometry(QRect(160, 120, 320, 240)); + else { + setGeometry(QRect(10, 10, 640, 480)); + + setSizeIncrement(QSize(10, 10)); + setBaseSize(QSize(640, 480)); + setMinimumSize(QSize(240, 160)); + setMaximumSize(QSize(800, 600)); + } + + create(); + m_backingStore = new QBackingStore(this); + + m_image = QImage(geometry().size(), QImage::Format_RGB32); + m_image.fill(colorTable[m_backgroundColorIndex % (sizeof(colorTable) / sizeof(colorTable[0]))].rgba()); + + m_lastPos = QPoint(-1, -1); + m_renderTimer = 0; +} + +void Window::mousePressEvent(QMouseEvent *event) +{ + m_lastPos = event->pos(); +} + +void Window::mouseMoveEvent(QMouseEvent *event) +{ + if (m_lastPos != QPoint(-1, -1)) { + QPainter p(&m_image); + p.setRenderHint(QPainter::Antialiasing); + p.drawLine(m_lastPos, event->pos()); + m_lastPos = event->pos(); + } + + scheduleRender(); +} + +void Window::mouseReleaseEvent(QMouseEvent *event) +{ + if (m_lastPos != QPoint(-1, -1)) { + QPainter p(&m_image); + p.setRenderHint(QPainter::Antialiasing); + p.drawLine(m_lastPos, event->pos()); + m_lastPos = QPoint(-1, -1); + } + + scheduleRender(); +} + +void Window::exposeEvent(QExposeEvent *) +{ + scheduleRender(); +} + +void Window::resizeEvent(QResizeEvent *) +{ + QImage old = m_image; + + int width = qMax(geometry().width(), old.width()); + int height = qMax(geometry().height(), old.height()); + + if (width > old.width() || height > old.height()) { + m_image = QImage(width, height, QImage::Format_RGB32); + m_image.fill(colorTable[(m_backgroundColorIndex) % (sizeof(colorTable) / sizeof(colorTable[0]))].rgba()); + + QPainter p(&m_image); + p.drawImage(0, 0, old); + } + + render(); +} + +void Window::keyPressEvent(QKeyEvent *event) +{ + switch (event->key()) { + case Qt::Key_Backspace: + m_text.chop(1); + break; + case Qt::Key_Enter: + case Qt::Key_Return: + m_text.append('\n'); + break; + default: + m_text.append(event->text()); + break; + } + scheduleRender(); +} + +void Window::scheduleRender() +{ + if (!m_renderTimer) + m_renderTimer = startTimer(1); +} + +void Window::timerEvent(QTimerEvent *) +{ + render(); + killTimer(m_renderTimer); + m_renderTimer = 0; +} + +void Window::render() +{ + QRect rect(QPoint(), geometry().size()); + m_backingStore->resize(rect.size()); + + m_backingStore->beginPaint(rect); + + QPaintDevice *device = m_backingStore->paintDevice(); + + QPainter p(device); + p.drawImage(0, 0, m_image); + + QFont font; + font.setPixelSize(32); + + p.setFont(font); + p.drawText(rect, 0, m_text); + + m_backingStore->endPaint(); + m_backingStore->flush(rect); +} + + diff --git a/examples/qpa/windows/window.h b/examples/qpa/windows/window.h new file mode 100644 index 0000000000..bf664d148e --- /dev/null +++ b/examples/qpa/windows/window.h @@ -0,0 +1,33 @@ +#include <QWindow> +#include <QImage> + +class Window : public QWindow +{ +public: + Window(QWindow *parent = 0); + Window(QScreen *screen); + +protected: + void mousePressEvent(QMouseEvent *); + void mouseMoveEvent(QMouseEvent *); + void mouseReleaseEvent(QMouseEvent *); + + void keyPressEvent(QKeyEvent *); + + void exposeEvent(QExposeEvent *); + void resizeEvent(QResizeEvent *); + + void timerEvent(QTimerEvent *); + +private: + void render(); + void scheduleRender(); + void initialize(); + + QString m_text; + QImage m_image; + QPoint m_lastPos; + int m_backgroundColorIndex; + QBackingStore *m_backingStore; + int m_renderTimer; +}; diff --git a/examples/qpa/windows/windows.pro b/examples/qpa/windows/windows.pro new file mode 100644 index 0000000000..ab59f28a3e --- /dev/null +++ b/examples/qpa/windows/windows.pro @@ -0,0 +1,15 @@ +###################################################################### +# Automatically generated by qmake (2.01a) Wed Apr 27 16:40:46 2011 +###################################################################### + +TEMPLATE = app +TARGET = +DEPENDPATH += . +INCLUDEPATH += . +CONFIG+=console +QT += gui-private +QT += core-private + +# Input +HEADERS += window.h +SOURCES += window.cpp main.cpp |