133 lines
2.9 KiB
C++
133 lines
2.9 KiB
C++
#include "window.h"
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#include <private/qguiapplication_p.h>
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#include <private/qwindowsurface_p.h>
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#include <QPainter>
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static int colorIndexId = 0;
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QColor colorTable[] =
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{
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QColor("#f09f8f"),
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QColor("#a2bff2"),
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QColor("#c0ef8f")
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};
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Window::Window(QWindow *parent)
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: QWindow(parent)
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, m_backgroundColorIndex(colorIndexId++)
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{
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setSurfaceType(RasterSurface);
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setWindowTitle(QLatin1String("Window"));
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if (parent)
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setGeometry(QRect(160, 120, 320, 240));
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else {
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setGeometry(QRect(10, 10, 640, 480));
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setSizeIncrement(QSize(10, 10));
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setBaseSize(QSize(640, 480));
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setMinimumSize(QSize(240, 160));
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setMaximumSize(QSize(800, 600));
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}
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create();
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QGuiApplicationPrivate::platformIntegration()->createWindowSurface(this, winId());
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m_image = QImage(geometry().size(), QImage::Format_RGB32);
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m_image.fill(colorTable[m_backgroundColorIndex % (sizeof(colorTable) / sizeof(colorTable[0]))].rgba());
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m_lastPos = QPoint(-1, -1);
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render();
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}
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void Window::mousePressEvent(QMouseEvent *event)
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{
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m_lastPos = event->pos();
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}
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void Window::mouseMoveEvent(QMouseEvent *event)
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{
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if (m_lastPos != QPoint(-1, -1)) {
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QPainter p(&m_image);
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p.setRenderHint(QPainter::Antialiasing);
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p.drawLine(m_lastPos, event->pos());
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m_lastPos = event->pos();
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}
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render();
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}
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void Window::mouseReleaseEvent(QMouseEvent *event)
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{
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if (m_lastPos != QPoint(-1, -1)) {
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QPainter p(&m_image);
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p.setRenderHint(QPainter::Antialiasing);
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p.drawLine(m_lastPos, event->pos());
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m_lastPos = QPoint(-1, -1);
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}
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render();
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}
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void Window::resizeEvent(QResizeEvent *)
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{
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QImage old = m_image;
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int width = qMax(geometry().width(), old.width());
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int height = qMax(geometry().height(), old.height());
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if (width > old.width() || height > old.height()) {
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m_image = QImage(width, height, QImage::Format_RGB32);
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m_image.fill(colorTable[(m_backgroundColorIndex) % (sizeof(colorTable) / sizeof(colorTable[0]))].rgba());
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QPainter p(&m_image);
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p.drawImage(0, 0, old);
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}
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render();
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}
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void Window::keyPressEvent(QKeyEvent *event)
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{
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switch (event->key()) {
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case Qt::Key_Backspace:
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m_text.chop(1);
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break;
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case Qt::Key_Enter:
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case Qt::Key_Return:
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m_text.append('\n');
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break;
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default:
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m_text.append(event->text());
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break;
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}
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render();
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}
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void Window::render()
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{
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QRect rect(QPoint(), geometry().size());
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surface()->resize(rect.size());
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surface()->beginPaint(rect);
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QPaintDevice *device = surface()->paintDevice();
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QPainter p(device);
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p.drawImage(0, 0, m_image);
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QFont font;
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font.setPixelSize(32);
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p.setFont(font);
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p.drawText(rect, 0, m_text);
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surface()->endPaint(rect);
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surface()->flush(this, rect, QPoint());
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}
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