Allow setting devicePixelRatio

src/uic_wrapper.sh

@@ -0,0 +1,6 @@
+#!/bin/sh
+DYLD_LIBRARY_PATH=/Users/Chase/Sites/Charity/phantomjs/src/qt/qtbase/lib${DYLD_LIBRARY_PATH:+:$DYLD_LIBRARY_PATH}
+export DYLD_LIBRARY_PATH
+QT_PLUGIN_PATH=/Users/Chase/Sites/Charity/phantomjs/src/qt/qtbase/plugins${QT_PLUGIN_PATH:+:$QT_PLUGIN_PATH}
+export QT_PLUGIN_PATH
+exec /Users/Chase/Sites/Charity/phantomjs/src/qt/qtbase/bin/uic "$@"

src/webpage.cpp

@@ -440,6 +440,7 @@ WebPage::WebPage(QObject* parent, const QUrl& baseUrl)
 
     m_dpi = qRound(QApplication::primaryScreen()->logicalDotsPerInch());
     m_customWebPage->setViewportSize(QSize(400, 300));
+    m_customWebPage->setDevicePixelRatio(1.0);
 }
 
 WebPage::~WebPage()
@@ -1382,6 +1383,15 @@ void WebPage::_uploadFile(const QString& selector, const QStringList& fileNames)
     el.evaluateJavaScript(JS_ELEMENT_CLICK);
 }
 
+void WebPage::setDevicePixelRatio(float ratio) {
+    m_customWebPage->setDevicePixelRatio(ratio);
+}
+
+float WebPage::devicePixelRatio() const
+{
+    return m_customWebPage->devicePixelRatio();
+}
+
 bool WebPage::injectJs(const QString& jsFilePath)
 {
     return Utils::injectJsInFrame(jsFilePath, m_libraryPath, m_currentFrame);

src/webpage.h

@@ -71,6 +71,7 @@ class WebPage : public QObject, public QWebFrame::PrintCallback
     Q_PROPERTY(bool navigationLocked READ navigationLocked WRITE setNavigationLocked)
     Q_PROPERTY(QVariantMap customHeaders READ customHeaders WRITE setCustomHeaders)
     Q_PROPERTY(qreal zoomFactor READ zoomFactor WRITE setZoomFactor)
+    Q_PROPERTY(float devicePixelRatio READ devicePixelRatio WRITE setDevicePixelRatio)
     Q_PROPERTY(QVariantList cookies READ cookies WRITE setCookies)
     Q_PROPERTY(QString windowName READ windowName)
     Q_PROPERTY(QObjectList pages READ pages)
@@ -140,6 +141,9 @@ class WebPage : public QObject, public QWebFrame::PrintCallback
     void setZoomFactor(qreal zoom);
     qreal zoomFactor() const;
 
+    void setDevicePixelRatio(float ratio);
+    float devicePixelRatio() const;
+
     /**
      * Value of <code>"window.name"</code> within the main page frame.
      *

test/module/webpage/device-pixel-ratio.js

@@ -0,0 +1,14 @@
+var webpage = require('webpage');
+
+test(function () {
+    var defaultPage = webpage.create();
+    assert_deep_equals(defaultPage.devicePixelRatio, 1.0);
+}, "default device pixel ratio");
+
+test(function () {
+    var options = {
+        devicePixelRatio: 1.5
+    };
+    var customPage = webpage.create(options);
+    assert_deep_equals(customPage.devicePixelRatio, options.devicePixelRatio);
+}, "custom device pixel ratio");