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Diffstat (limited to 'src/platformsupport/eglconvenience/qeglconvenience.cpp')
-rw-r--r--src/platformsupport/eglconvenience/qeglconvenience.cpp108
1 files changed, 108 insertions, 0 deletions
diff --git a/src/platformsupport/eglconvenience/qeglconvenience.cpp b/src/platformsupport/eglconvenience/qeglconvenience.cpp
index fe6ba2b215..6c2cc4a186 100644
--- a/src/platformsupport/eglconvenience/qeglconvenience.cpp
+++ b/src/platformsupport/eglconvenience/qeglconvenience.cpp
@@ -41,6 +41,12 @@
#include <QByteArray>
+#ifdef Q_OS_UNIX
+#include <sys/ioctl.h>
+#include <linux/fb.h>
+#include <private/qmath_p.h>
+#endif
+
#include "qeglconvenience_p.h"
QT_BEGIN_NAMESPACE
@@ -427,4 +433,106 @@ void q_printEglConfig(EGLDisplay display, EGLConfig config)
qWarning("\n");
}
+#ifdef Q_OS_UNIX
+
+QSizeF q_physicalScreenSizeFromFb(int framebufferDevice)
+{
+ const int defaultPhysicalDpi = 100;
+ static QSizeF size;
+
+ if (size.isEmpty()) {
+ // Note: in millimeters
+ int width = qgetenv("QT_QPA_EGLFS_PHYSICAL_WIDTH").toInt();
+ int height = qgetenv("QT_QPA_EGLFS_PHYSICAL_HEIGHT").toInt();
+
+ if (width && height) {
+ size.setWidth(width);
+ size.setHeight(height);
+ return size;
+ }
+
+ struct fb_var_screeninfo vinfo;
+ int w = -1;
+ int h = -1;
+ QSize screenResolution;
+
+ if (framebufferDevice != -1) {
+ if (ioctl(framebufferDevice, FBIOGET_VSCREENINFO, &vinfo) == -1) {
+ qWarning("eglconvenience: Could not query screen info");
+ } else {
+ w = vinfo.width;
+ h = vinfo.height;
+ screenResolution = QSize(vinfo.xres, vinfo.yres);
+ }
+ } else {
+ screenResolution = q_screenSizeFromFb(framebufferDevice);
+ }
+
+ size.setWidth(w <= 0 ? screenResolution.width() * Q_MM_PER_INCH / defaultPhysicalDpi : qreal(w));
+ size.setHeight(h <= 0 ? screenResolution.height() * Q_MM_PER_INCH / defaultPhysicalDpi : qreal(h));
+ }
+
+ return size;
+}
+
+QSize q_screenSizeFromFb(int framebufferDevice)
+{
+ const int defaultWidth = 800;
+ const int defaultHeight = 600;
+ static QSize size;
+
+ if (size.isEmpty()) {
+ int width = qgetenv("QT_QPA_EGLFS_WIDTH").toInt();
+ int height = qgetenv("QT_QPA_EGLFS_HEIGHT").toInt();
+
+ if (width && height) {
+ size.setWidth(width);
+ size.setHeight(height);
+ return size;
+ }
+
+ struct fb_var_screeninfo vinfo;
+ int xres = -1;
+ int yres = -1;
+
+ if (framebufferDevice != -1) {
+ if (ioctl(framebufferDevice, FBIOGET_VSCREENINFO, &vinfo) == -1) {
+ qWarning("eglconvenience: Could not read screen info");
+ } else {
+ xres = vinfo.xres;
+ yres = vinfo.yres;
+ }
+ }
+
+ size.setWidth(xres <= 0 ? defaultWidth : xres);
+ size.setHeight(yres <= 0 ? defaultHeight : yres);
+ }
+
+ return size;
+}
+
+int q_screenDepthFromFb(int framebufferDevice)
+{
+ const int defaultDepth = 32;
+ static int depth = qgetenv("QT_QPA_EGLFS_DEPTH").toInt();
+
+ if (depth == 0) {
+ struct fb_var_screeninfo vinfo;
+
+ if (framebufferDevice != -1) {
+ if (ioctl(framebufferDevice, FBIOGET_VSCREENINFO, &vinfo) == -1)
+ qWarning("eglconvenience: Could not query screen info");
+ else
+ depth = vinfo.bits_per_pixel;
+ }
+
+ if (depth <= 0)
+ depth = defaultDepth;
+ }
+
+ return depth;
+}
+
+#endif // Q_OS_UNIX
+
QT_END_NAMESPACE