qt表格实现

  • c8_882237
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  • 2022-04-01 01:08
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qt5.4.0版本下的,实现表格,可以编写、存储、删除等等。表格功能。
iconeditor.zip
  • iconeditor
  • images
  • mouse.png
    1KB
  • iconeditor.qrc
    72B
  • main.cpp
    312B
  • iconeditor.pro
    138B
  • iconeditor.h
    1007B
  • iconeditor.cpp
    2.9KB
内容介绍
#include <QtGui> #include "iconeditor.h" IconEditor::IconEditor(QWidget *parent) : QWidget(parent) { setAttribute(Qt::WA_StaticContents); setSizePolicy(QSizePolicy::Minimum, QSizePolicy::Minimum); curColor = Qt::black; zoom = 8; image = QImage(16, 16, QImage::Format_ARGB32); image.fill(qRgba(0, 0, 0, 0)); } void IconEditor::setPenColor(const QColor &newColor) { curColor = newColor; } void IconEditor::setZoomFactor(int newZoom) { if (newZoom < 1) newZoom = 1; if (newZoom != zoom) { zoom = newZoom; update(); updateGeometry(); } } void IconEditor::setIconImage(const QImage &newImage) { if (newImage != image) { image = newImage.convertToFormat(QImage::Format_ARGB32); update(); updateGeometry(); } } QSize IconEditor::sizeHint() const { QSize size = zoom * image.size(); if (zoom >= 3) size += QSize(1, 1); return size; } void IconEditor::mousePressEvent(QMouseEvent *event) { if (event->button() == Qt::LeftButton) { setImagePixel(event->pos(), true); } else if (event->button() == Qt::RightButton) { setImagePixel(event->pos(), false); } } void IconEditor::mouseMoveEvent(QMouseEvent *event) { if (event->buttons() & Qt::LeftButton) { setImagePixel(event->pos(), true); } else if (event->buttons() & Qt::RightButton) { setImagePixel(event->pos(), false); } } void IconEditor::paintEvent(QPaintEvent *event) { QPainter painter(this); if (zoom >= 3) { painter.setPen(palette().foreground().color()); for (int i = 0; i <= image.width(); ++i) painter.drawLine(zoom * i, 0, zoom * i, zoom * image.height()); for (int j = 0; j <= image.height(); ++j) painter.drawLine(0, zoom * j, zoom * image.width(), zoom * j); } for (int i = 0; i < image.width(); ++i) { for (int j = 0; j < image.height(); ++j) { QRect rect = pixelRect(i, j); if (!event->region().intersect(rect).isEmpty()) { QColor color = QColor::fromRgba(image.pixel(i, j)); if (color.alpha() < 255) painter.fillRect(rect, Qt::white); painter.fillRect(rect, color); } } } } void IconEditor::setImagePixel(const QPoint &pos, bool opaque) { int i = pos.x() / zoom; int j = pos.y() / zoom; if (image.rect().contains(i, j)) { if (opaque) { image.setPixel(i, j, penColor().rgba()); } else { image.setPixel(i, j, qRgba(0, 0, 0, 0)); } update(pixelRect(i, j)); } } QRect IconEditor::pixelRect(int i, int j) const { if (zoom >= 3) { return QRect(zoom * i + 1, zoom * j + 1, zoom - 1, zoom - 1); } else { return QRect(zoom * i, zoom * j, zoom, zoom); } }
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