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Code Issues Activity Actions

3DFileViewer: Allow zooming via mouse wheel

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This commit is contained in:
Stephan Unverwerth 2021-08-12 20:39:58 +02:00 • committed by Andreas Kling
parent 3c509cf2f7
commit e405f436b6
1 changed files with 11 additions and 0 deletions
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11
Userland/Applications/3DFileViewer/main.cpp
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@ -82,6 +82,7 @@ private:
virtual void paint_event(GUI::PaintEvent&) override;
virtual void timer_event(Core::TimerEvent&) override;
virtual void mousemove_event(GUI::MouseEvent&) override;
virtual void mousewheel_event(GUI::MouseEvent&) override;
private:
RefPtr<Mesh> m_mesh;
@ -105,6 +106,7 @@ private:
GLint m_wrap_t_mode = GL_REPEAT;
float m_texture_scale = 1.0f;
GLint m_mag_filter = GL_NEAREST;
float m_zoom = 1;
};
void GLContextWidget::paint_event(GUI::PaintEvent& event)
@ -129,6 +131,14 @@ void GLContextWidget::mousemove_event(GUI::MouseEvent& event)
m_last_mouse = event.position();
}
void GLContextWidget::mousewheel_event(GUI::MouseEvent& event)
{
if (event.wheel_delta() > 0)
m_zoom /= 1.1f;
else
m_zoom *= 1.1f;
}
void GLContextWidget::timer_event(Core::TimerEvent&)
{
Core::ElapsedTimer timer;
@ -152,6 +162,7 @@ void GLContextWidget::timer_event(Core::TimerEvent&)
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, m_wrap_s_mode);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, m_wrap_t_mode);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, m_mag_filter);
glScalef(m_zoom, m_zoom, m_zoom);
if (!m_mesh.is_null())
m_mesh->draw(m_texture_scale);