Issue #123: DPI scaling

Pdf4QtLibCore/sources/pdfblpainter.cpp

@@ -187,6 +187,10 @@ bool PDFBLPaintEngine::begin(QPaintDevice*)
     if (m_blContext->begin(m_blOffscreenBuffer.value(), info) == BL_SUCCESS)
     {
         m_blContext->clearAll();
+
+        qreal devicePixelRatio = m_qtOffscreenBuffer.devicePixelRatioF();
+        m_blContext->scale(devicePixelRatio);
+        m_blContext->userToMeta();
         return true;
     }
     else

Pdf4QtLibWidgets/sources/pdfdrawwidget.cpp

@@ -583,9 +583,16 @@ void PDFDrawWidget::paintEvent(QPaintEvent* event)
         case RendererEngine::Blend2D:
         {
             QRect rect = this->rect();
-            if (m_blend2DframeBuffer.size() != rect.size())
+
+            qreal devicePixelRatio = devicePixelRatioF();
+            m_blend2DframeBuffer.setDevicePixelRatio(devicePixelRatio);
+            m_blend2DframeBuffer.setDotsPerMeterX(logicalDpiX());
+            m_blend2DframeBuffer.setDotsPerMeterY(logicalDpiY());
+
+            QSize requiredSize = rect.size() * devicePixelRatio;
+            if (m_blend2DframeBuffer.size() != requiredSize)
             {
-                m_blend2DframeBuffer = QImage(rect.size(), QImage::Format_ARGB32_Premultiplied);
+                m_blend2DframeBuffer = QImage(requiredSize, QImage::Format_ARGB32_Premultiplied);
             }
 
             PDFBLPaintDevice blPaintDevice(m_blend2DframeBuffer, true);

Pdf4QtViewer/pdfprogramcontroller.cpp

@@ -150,6 +150,7 @@ std::vector<QAction*> PDFActionManager::getRenderingOptionActions() const
          RenderOptionTextAntialiasing,
          RenderOptionSmoothPictures,
          RenderOptionIgnoreOptionalContentSettings,
+         RenderOptionDisplayRenderTimes,
          RenderOptionDisplayAnnotations,
          RenderOptionInvertColors,
          RenderOptionGrayscale,
@@ -157,8 +158,7 @@ std::vector<QAction*> PDFActionManager::getRenderingOptionActions() const
          RenderOptionHighContrast,
          RenderOptionCustomColors,
          RenderOptionShowTextBlocks,
-         RenderOptionShowTextLines
+         RenderOptionShowTextLines});
-                         });
 }
 
 std::vector<QAction*> PDFActionManager::getActions() const
@@ -266,6 +266,7 @@ void PDFActionManager::initActions(QSize iconSize, bool initializeStampActions)
     setUserData(RenderOptionTextAntialiasing, pdf::PDFRenderer::TextAntialiasing);
     setUserData(RenderOptionSmoothPictures, pdf::PDFRenderer::SmoothImages);
     setUserData(RenderOptionIgnoreOptionalContentSettings, pdf::PDFRenderer::IgnoreOptionalContent);
+    setUserData(RenderOptionDisplayRenderTimes, pdf::PDFRenderer::DisplayTimes);
     setUserData(RenderOptionDisplayAnnotations, pdf::PDFRenderer::DisplayAnnotations);
     setUserData(RenderOptionInvertColors, pdf::PDFRenderer::ColorAdjust_Invert);
     setUserData(RenderOptionGrayscale, pdf::PDFRenderer::ColorAdjust_Grayscale);

Pdf4QtViewer/pdfprogramcontroller.h

@@ -161,6 +161,7 @@ public:
         RenderOptionTextAntialiasing,
         RenderOptionSmoothPictures,
         RenderOptionIgnoreOptionalContentSettings,
+        RenderOptionDisplayRenderTimes,
         RenderOptionDisplayAnnotations,
         RenderOptionInvertColors,
         RenderOptionGrayscale,

Pdf4QtViewer/pdfviewermainwindow.cpp

@@ -160,6 +160,7 @@ PDFViewerMainWindow::PDFViewerMainWindow(QWidget* parent) :
     m_actionManager->setAction(PDFActionManager::RenderOptionTextAntialiasing, ui->actionRenderOptionTextAntialiasing);
     m_actionManager->setAction(PDFActionManager::RenderOptionSmoothPictures, ui->actionRenderOptionSmoothPictures);
     m_actionManager->setAction(PDFActionManager::RenderOptionIgnoreOptionalContentSettings, ui->actionRenderOptionIgnoreOptionalContentSettings);
+    m_actionManager->setAction(PDFActionManager::RenderOptionDisplayRenderTimes, ui->actionRenderOptionDisplayRenderTimes);
     m_actionManager->setAction(PDFActionManager::RenderOptionDisplayAnnotations, ui->actionRenderOptionDisplayAnnotations);
     m_actionManager->setAction(PDFActionManager::RenderOptionInvertColors, ui->actionColorInvert);
     m_actionManager->setAction(PDFActionManager::RenderOptionGrayscale, ui->actionColorGrayscale);

Pdf4QtViewer/pdfviewermainwindow.ui

@@ -90,6 +90,7 @@
      <addaction name="actionRenderOptionSmoothPictures"/>
      <addaction name="actionRenderOptionIgnoreOptionalContentSettings"/>
      <addaction name="actionRenderOptionDisplayAnnotations"/>
+     <addaction name="actionRenderOptionDisplayRenderTimes"/>
     </widget>
     <addaction name="menuPage_Layout"/>
     <addaction name="menuRendering_Options"/>
@@ -1153,6 +1154,17 @@
     <string>If checked, bookmarks for main document chapters are generated automatically.</string>
    </property>
   </action>
+  <action name="actionRenderOptionDisplayRenderTimes">
+   <property name="checkable">
+    <bool>true</bool>
+   </property>
+   <property name="text">
+    <string>Display Render Times</string>
+   </property>
+   <property name="menuRole">
+    <enum>QAction::NoRole</enum>
+   </property>
+  </action>
  </widget>
  <layoutdefault spacing="6" margin="11"/>
  <resources>

Pdf4QtViewer/pdfviewermainwindowlite.cpp

@@ -130,6 +130,7 @@ PDFViewerMainWindowLite::PDFViewerMainWindowLite(QWidget* parent) :
     m_actionManager->setAction(PDFActionManager::RenderOptionTextAntialiasing, ui->actionRenderOptionTextAntialiasing);
     m_actionManager->setAction(PDFActionManager::RenderOptionSmoothPictures, ui->actionRenderOptionSmoothPictures);
     m_actionManager->setAction(PDFActionManager::RenderOptionIgnoreOptionalContentSettings, ui->actionRenderOptionIgnoreOptionalContentSettings);
+    m_actionManager->setAction(PDFActionManager::RenderOptionDisplayRenderTimes, ui->actionRenderOptionDisplayRenderTimes);
     m_actionManager->setAction(PDFActionManager::RenderOptionDisplayAnnotations, ui->actionRenderOptionDisplayAnnotations);
     m_actionManager->setAction(PDFActionManager::RenderOptionInvertColors, ui->actionColorInvert);
     m_actionManager->setAction(PDFActionManager::RenderOptionGrayscale, ui->actionColorGrayscale);

Pdf4QtViewer/pdfviewermainwindowlite.ui

@@ -56,7 +56,6 @@
     <addaction name="actionGoToNextPage"/>
     <addaction name="actionGoToPreviousLine"/>
     <addaction name="actionGoToNextLine"/>
-	
     <addaction name="separator"/>
     <addaction name="actionBookmarkPage"/>
     <addaction name="actionGotoPreviousBookmark"/>
@@ -87,6 +86,7 @@
      <addaction name="actionRenderOptionSmoothPictures"/>
      <addaction name="actionRenderOptionIgnoreOptionalContentSettings"/>
      <addaction name="actionRenderOptionDisplayAnnotations"/>
+     <addaction name="actionRenderOptionDisplayRenderTimes"/>
     </widget>
     <addaction name="menuPage_Layout"/>
     <addaction name="menuRendering_Options"/>
@@ -557,7 +557,6 @@
     <string>Become a Sponsor</string>
    </property>
   </action>
-  
   <action name="actionBookmarkPage">
    <property name="icon">
     <iconset resource="pdf4qtviewer.qrc">
@@ -651,6 +650,17 @@
     <string>If checked, bookmarks for main document chapters are generated automatically.</string>
    </property>
   </action>
+  <action name="actionRenderOptionDisplayRenderTimes">
+   <property name="checkable">
+    <bool>true</bool>
+   </property>
+   <property name="text">
+    <string>Display Render Times</string>
+   </property>
+   <property name="menuRole">
+    <enum>QAction::NoRole</enum>
+   </property>
+  </action>
  </widget>
  <layoutdefault spacing="6" margin="11"/>
  <resources>