51 lines
1.0 KiB
C++
51 lines
1.0 KiB
C++
#include "mainwindow.h"
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#include "ui_mainwindow.h"
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#include <QDebug>
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#include <QPainter>
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#include <math.h>
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QColor colorFromRGB565(uint16_t color) {
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int R8 = (int) floor( (color>>(5+6)) * 255.0 / 31.0 + 0.5);
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int G8 = (int) floor( ((color>>5)&0x2F) * 255.0 / 63.0 + 0.5);
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int B8 = (int) floor( (color&0x1F) * 255.0 / 31.0 + 0.5);
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return QColor::fromRgb(R8,G8,B8);
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}
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MainWindow::MainWindow(QWidget *parent) :
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QMainWindow(parent),
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pixmap(320,240),
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ui(new Ui::MainWindow)
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{
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ui->setupUi(this);
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}
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void MainWindow::draw_line(uint16_t x1, uint16_t y1, uint16_t x2, uint16_t y2, uint16_t color)
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{
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render_mutex.lock();
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QPainter painter(&(pixmap));
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painter.setPen(colorFromRGB565(color));
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painter.drawLine(x1,y1,x2,y2);
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render_mutex.unlock();
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}
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void MainWindow::paintEvent(QPaintEvent *)
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{
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render_mutex.lock();
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QPainter painter(this);
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painter.drawPixmap(100,100,pixmap);
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painter.setPen(Qt::green);
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painter.drawRect(100-1,100-1,320+2,240+2);
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render_mutex.unlock();
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}
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MainWindow::~MainWindow()
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{
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delete ui;
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}
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