From 221a9b023d8c9ca55c093823e9efd6d13d0a54a2 Mon Sep 17 00:00:00 2001 From: Kevin Hartman Date: Fri, 29 Aug 2014 22:23:12 -0700 Subject: Viewport scaling and display density independence The view is scaled to be as large as possible, without changing the aspect, within the bounds of the window. On "retina" displays, or other displays where window units != pixels, the view should no longer draw incorrectly. --- src/citra_qt/bootmanager.cpp | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) (limited to 'src/citra_qt/bootmanager.cpp') diff --git a/src/citra_qt/bootmanager.cpp b/src/citra_qt/bootmanager.cpp index 20824692d..516e115fd 100644 --- a/src/citra_qt/bootmanager.cpp +++ b/src/citra_qt/bootmanager.cpp @@ -2,6 +2,12 @@ #include #include +#if QT_VERSION >= QT_VERSION_CHECK(5, 0, 0) +// Required for screen DPI information +#include +#include +#endif + #include "common/common.h" #include "bootmanager.hxx" @@ -176,6 +182,24 @@ void GRenderWindow::PollEvents() { */ } +// On Qt 5.1+, this correctly gets the size of the framebuffer (pixels). +// +// Older versions get the window size (density independent pixels), +// and hence, do not support DPI scaling ("retina" displays). +// The result will be a viewport that is smaller than the extent of the window. +void GRenderWindow::GetFramebufferSize(int* fbWidth, int* fbHeight) +{ +#if QT_VERSION >= QT_VERSION_CHECK(5, 1, 0) + int pixelRatio = child->QPaintDevice::devicePixelRatio(); + + *fbWidth = child->QPaintDevice::width() * pixelRatio; + *fbHeight = child->QPaintDevice::height() * pixelRatio; +#else + *fbWidth = child->QPaintDevice::width(); + *fbHeight = child->QPaintDevice::height(); +#endif +} + void GRenderWindow::BackupGeometry() { geometry = ((QGLWidget*)this)->saveGeometry(); -- cgit v1.2.3