1berry/qtbase
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Spice up QOpenGLWindow example

Browse Source 
By drawing the same gradient for the triangle as in the rasterwindow example.
We also set a default geometry and show the window without forcing it to become
maximized.

Change-Id: I05f9138d08f9c5d3e30eec362a3a1cd63d72753e
Reviewed-by: Eirik Aavitsland <eirik.aavitsland@qt.io>
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>
This commit is contained in:
Tor Arne Vestbø 2018-05-31 11:38:33 +02:00
parent d760f39d5c
commit 384e72bdb3
1 changed files with 5 additions and 10 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

15
examples/opengl/qopenglwindow/main.cpp
View File

@ -92,7 +92,6 @@ private:
QMatrix4x4 m_view; QMatrix4x4 m_view;
QMatrix4x4 m_model_triangle; QMatrix4x4 m_model_triangle;
QMatrix4x4 m_model_text; QMatrix4x4 m_model_text;
QBrush m_brush;
FragmentToy m_fragment_toy; FragmentToy m_fragment_toy;
QStaticText m_text_layout; QStaticText m_text_layout;
@ -111,16 +110,12 @@ OpenGLWindow::OpenGLWindow()
, m_text_layout("The triangle and this text is rendered with QPainter") , m_text_layout("The triangle and this text is rendered with QPainter")
, m_animate(true) , m_animate(true)
{ {
setGeometry(300, 300, 500, 500);
m_view.lookAt(QVector3D(3,1,1), m_view.lookAt(QVector3D(3,1,1),
QVector3D(0,0,0), QVector3D(0,0,0),
QVector3D(0,1,0)); QVector3D(0,1,0));
QLinearGradient gradient(QPointF(-1,-1), QPointF(1,1));
gradient.setColorAt(0, Qt::red);
gradient.setColorAt(1, Qt::green);
m_brush = QBrush(gradient);
setAnimating(m_animate); setAnimating(m_animate);
} }
@ -134,11 +129,11 @@ void OpenGLWindow::paintGL()
QMatrix4x4 mvp = m_projection * m_view * m_model_triangle; QMatrix4x4 mvp = m_projection * m_view * m_model_triangle;
p.setTransform(mvp.toTransform(), true); p.setTransform(mvp.toTransform(), true);
p.fillPath(painterPathForTriangle(), m_brush); p.fillPath(painterPathForTriangle(), QBrush(QGradient(QGradient::NightFade)));
QTransform text_transform = (m_window_painter_matrix * m_view * m_model_text).toTransform(); QTransform text_transform = (m_window_painter_matrix * m_view * m_model_text).toTransform();
p.setTransform(text_transform, false); p.setTransform(text_transform, false);
p.setPen(QPen(Qt::white)); p.setPen(QPen(Qt::black));
m_text_layout.prepare(text_transform); m_text_layout.prepare(text_transform);
qreal x = - (m_text_layout.size().width() / 2); qreal x = - (m_text_layout.size().width() / 2);
qreal y = 0; qreal y = 0;
@ -197,7 +192,7 @@ int main(int argc, char **argv)
fmt.setDepthBufferSize(24); fmt.setDepthBufferSize(24);
fmt.setStencilBufferSize(8); fmt.setStencilBufferSize(8);
window.setFormat(fmt); window.setFormat(fmt);
window.showMaximized(); window.show();
return app.exec(); return app.exec();
} }