141 lines
2.9 KiB
C++
141 lines
2.9 KiB
C++
#include "viewerwindow.h"
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#include <QMutex>
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#include <QKeyEvent>
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#include <QPainter>
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#include <QApplication>
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#include <QMenuBar>
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#include <QDebug>
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#include "mainwindow.h"
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ViewerWindow::ViewerWindow(QOpenGLContext *share) :
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QOpenGLWindow(share),
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texture(0),
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mutex(nullptr),
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show_fullscreen_msg(false)
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{
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fullscreen_msg_timer.setInterval(2000);
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connect(&fullscreen_msg_timer, SIGNAL(timeout()), this, SLOT(fullscreen_msg_timeout()));
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installEventFilter(mainWindow);
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}
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void ViewerWindow::set_texture(GLuint t, double iar, QMutex* imutex) {
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texture = t;
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ar = iar;
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mutex = imutex;
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update();
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}
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void ViewerWindow::keyPressEvent(QKeyEvent *e) {
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if (e->key() == Qt::Key_Escape) {
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hide();
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}
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}
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void ViewerWindow::mousePressEvent(QMouseEvent *e) {
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if (show_fullscreen_msg && fullscreen_msg_rect.contains(e->pos())) {
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hide();
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}
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}
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void ViewerWindow::mouseMoveEvent(QMouseEvent *) {
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fullscreen_msg_timer.start();
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if (!show_fullscreen_msg) {
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show_fullscreen_msg = true;
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update();
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}
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}
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void ViewerWindow::paintGL() {
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if (texture > 0) {
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if (mutex != nullptr) mutex->lock();
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glClearColor(0.0, 0.0, 0.0, 1.0);
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glClear(GL_COLOR_BUFFER_BIT);
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glEnable(GL_TEXTURE_2D);
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glBindTexture(GL_TEXTURE_2D, texture);
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glLoadIdentity();
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glOrtho(0, 1, 0, 1, -1, 1);
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glBegin(GL_QUADS);
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double top = 0;
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double left = 0;
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double right = 1;
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double bottom = 1;
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double widget_ar = double(width()) / double(height());
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if (widget_ar > ar) {
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double width = 1.0 * ar / widget_ar;
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left = (1.0 - width)*0.5;
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right = left + width;
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} else {
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double height = 1.0 / ar * widget_ar;
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top = (1.0 - height)*0.5;
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bottom = top + height;
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}
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glVertex2d(left, top);
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glTexCoord2d(0, 0);
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glVertex2d(left, bottom);
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glTexCoord2d(1, 0);
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glVertex2d(right, bottom);
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glTexCoord2d(1, 1);
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glVertex2d(right, top);
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glTexCoord2d(0, 1);
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glEnd();
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glBindTexture(GL_TEXTURE_2D, 0);
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glDisable(GL_TEXTURE_2D);
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if (mutex != nullptr) mutex->unlock();
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}
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if (show_fullscreen_msg) {
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QPainter p(this);
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QFont f = p.font();
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f.setPointSize(24);
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p.setFont(f);
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QFontMetrics fm(f);
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QString fs_str = tr("Exit Fullscreen");
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p.setPen(Qt::white);
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p.setBrush(QColor(0, 0, 0, 128));
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int text_width = fm.width(fs_str);
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int text_x = (width()/2)-(text_width/2);
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int text_y = fm.height()+fm.ascent();
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int rect_padding = 8;
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fullscreen_msg_rect = QRect(text_x-rect_padding,
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fm.height()-rect_padding,
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text_width+rect_padding+rect_padding,
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fm.height()+rect_padding+rect_padding);
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p.drawRect(fullscreen_msg_rect);
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p.drawText(text_x, text_y, fs_str);
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}
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}
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void ViewerWindow::fullscreen_msg_timeout() {
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fullscreen_msg_timer.stop();
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if (show_fullscreen_msg) {
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show_fullscreen_msg = false;
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update();
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}
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}
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