Changeset 76159 in vbox

Timestamp:

Dec 11, 2018 11:03:40 AM (6 years ago)

Author:

vboxsync

Message:

FE/Qt: bugref:9254. Making scale factor editor's min/max values dynamic wrt. host's pixel ratio(s)

Location:

trunk/src/VBox/Frontends/VirtualBox/src/widgets

Files:

• UIScaleFactorEditor.cpp (modified) (3 diffs)
• UIScaleFactorEditor.h (modified) (1 diff)

trunk/src/VBox/Frontends/VirtualBox/src/widgets/UIScaleFactorEditor.cpp

@@ -30 +30 @@
 /* GUI includes: */
 # include "QIAdvancedSlider.h"
+# include "UIDesktopWidgetWatchdog.h"
 # include "UIScaleFactorEditor.h"
+
+/* External includes: */
+# include <math.h>
 
 #endif /* !VBOX_WITH_PRECOMPILED_HEADERS */
@@ -255 +259 @@
     }
 
-
+    configureScaleFactorMinMaxValues();
     setLayout(m_pMainLayout);
     retranslateUi();
@@ -305 +309 @@
     }
 }
+
+void UIScaleFactorEditor::configureScaleFactorMinMaxValues()
+{
+    int iHostScreenCount = gpDesktop->screenCount();
+    if (iHostScreenCount == 0)
+        return;
+    double dMaxDevicePixelRatio = gpDesktop->devicePixelRatio(0);
+    for (int i = 1; i < iHostScreenCount; ++i)
+        if (dMaxDevicePixelRatio < gpDesktop->devicePixelRatio(i))
+            dMaxDevicePixelRatio = gpDesktop->devicePixelRatio(i);
+
+    const int iMinimum = 100;
+    const int iMaximum = ceil(iMinimum + 100 * dMaxDevicePixelRatio);
+
+    const int iStep = 25;
+
+    m_pScaleSlider->setMinimum(iMinimum);
+    m_pScaleSlider->setMaximum(iMaximum);
+    m_pScaleSlider->setPageStep(iStep);
+    m_pScaleSlider->setSingleStep(1);
+    m_pScaleSlider->setTickInterval(iStep);
+    m_pScaleSpinBox->setMinimum(iMinimum);
+    m_pScaleSpinBox->setMaximum(iMaximum);
+}

trunk/src/VBox/Frontends/VirtualBox/src/widgets/UIScaleFactorEditor.h

@@ -87 +87 @@
     /** Sets the spinbox and slider to scale factor of currently selected monitor. */
     void updateValuesAfterMonitorChange();
-
+    /** Sets the min/max values of related widgets wrt. device pixel ratio(s) */
+    void configureScaleFactorMinMaxValues();
     /** @name Member widgets.
       * @{ */