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#include <QPainter>
#include <QPaintEvent>
#include <QStyle>
#include "lcddisplay.h"
#include "lcddisplayview.h"
LcdDisplayView::LcdDisplayView(QWidget *parent) : Super(parent) {
setMinimumSize(100, 100);
fb_pixels = nullptr;
scale_x = 1.0;
scale_y = 1.0;
}
LcdDisplayView::~LcdDisplayView() {
if (fb_pixels != nullptr)
delete fb_pixels;
}
void LcdDisplayView::setup(machine::LcdDisplay *lcd_display) {
if (lcd_display == nullptr)
return;
connect(lcd_display, SIGNAL(pixel_update(uint,uint,uint,uint,uint)),
this, SLOT(pixel_update(uint,uint,uint,uint,uint)));
if (fb_pixels != nullptr)
delete fb_pixels;
fb_pixels = nullptr;
fb_pixels = new QImage(lcd_display->width(),
lcd_display->height(), QImage::Format_RGB32);
fb_pixels->fill(qRgb(0, 0, 0));
update_scale();
update();
}
void LcdDisplayView::pixel_update(uint x, uint y, uint r, uint g, uint b) {
int x1, y1, x2, y2;
if (fb_pixels != nullptr) {
fb_pixels->setPixel(x, y, qRgb(r, g, b));
x1 = x * scale_x - 2;
if (x1 < 0)
x1 = 0;
x2 = x * scale_x + 2;
if (x2 > width())
x2 = width();
y1 = y * scale_y - 2;
if (y1 < 0)
y1 = 0;
y2 = y * scale_y + 2;
if (y2 > height())
y2 = height();
update(x1, y1, x2 - x1, y2 - y1);
}
}
void LcdDisplayView::update_scale() {
if (fb_pixels != nullptr) {
if ((fb_pixels->width() != 0) && (fb_pixels->height() != 0)) {
scale_x = (float)width() / fb_pixels->width();
scale_y = (float)height() / fb_pixels->height();
return;
}
}
scale_x = 1.0;
scale_y = 1.0;
}
void LcdDisplayView::paintEvent(QPaintEvent *event) {
if (fb_pixels == nullptr)
return Super::paintEvent(event);
if (fb_pixels->width() == 0)
return Super::paintEvent(event);
QPainter painter(this);
painter.drawImage(rect(), *fb_pixels);
#if 0
painter.setPen(QPen(QColor(255, 255, 0)));
painter.drawLine(event->rect().topLeft(),event->rect().topRight());
painter.drawLine(event->rect().topLeft(),event->rect().bottomLeft());
painter.drawLine(event->rect().topLeft(),event->rect().bottomRight());
#endif
}
void LcdDisplayView::resizeEvent(QResizeEvent *event) {
Super::resizeEvent(event);
update_scale();
}
uint LcdDisplayView::fb_width() {
if (fb_pixels == nullptr)
return 0;
return fb_pixels->width();
}
uint LcdDisplayView::fb_height() {
if (fb_pixels == nullptr)
return 0;
return fb_pixels->height();
}
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