From c03b6371db5c82cb19a5122a3159e46fab2d3a38 Mon Sep 17 00:00:00 2001
From: Simon Hausmann <simon.hausmann@theqtcompany.com>
Date: Mon, 15 Dec 2014 13:34:00 +0100
Subject: Added basic rendering and page size getter

---
 src/pdf/qpdfdocument.cpp | 28 ++++++++++++++++++++++++++++
 src/pdf/qpdfdocument.h   |  5 +++++
 2 files changed, 33 insertions(+)

(limited to 'src')

diff --git a/src/pdf/qpdfdocument.cpp b/src/pdf/qpdfdocument.cpp
index f05310d4a..738f896cb 100644
--- a/src/pdf/qpdfdocument.cpp
+++ b/src/pdf/qpdfdocument.cpp
@@ -94,3 +94,31 @@ int QPdfDocument::pageCount() const
         return 0;
     return FPDF_GetPageCount(d->doc);
 }
+
+QSizeF QPdfDocument::pageSize(int page) const
+{
+    QSizeF result;
+    if (!d->doc)
+        return result;
+    FPDF_GetPageSizeByIndex(d->doc, page, &result.rwidth(), &result.rheight());
+    return result;
+}
+
+QImage QPdfDocument::render(int page, const QSizeF &pageSize)
+{
+    if (!d->doc)
+        return QImage();
+
+    FPDF_PAGE pdfPage = FPDF_LoadPage(d->doc, page);
+    if (!pdfPage)
+        return QImage();
+
+    QImage result(pageSize.toSize(), QImage::Format_ARGB32);
+    result.fill(Qt::transparent);
+    FPDF_BITMAP bitmap = FPDFBitmap_CreateEx(result.width(), result.height(), FPDFBitmap_BGRA, result.bits(), result.bytesPerLine());
+
+    FPDF_RenderPageBitmap(bitmap, pdfPage, 0, 0, result.width(), result.height(), 0, 0);
+
+    FPDFBitmap_Destroy(bitmap);
+    return result;
+}
diff --git a/src/pdf/qpdfdocument.h b/src/pdf/qpdfdocument.h
index 32baebbcb..c389ab570 100644
--- a/src/pdf/qpdfdocument.h
+++ b/src/pdf/qpdfdocument.h
@@ -2,6 +2,7 @@
 #define QPDFDOCUMENT_H
 
 #include <QObject>
+#include <QImage>
 #include "qtpdfglobal.h"
 
 class QPdfDocumentPrivate;
@@ -28,6 +29,10 @@ public:
 
     int pageCount() const;
 
+    QSizeF pageSize(int page) const;
+
+    QImage render(int page, const QSizeF &pageSize);
+
 private:
     QScopedPointer<QPdfDocumentPrivate> d;
 };
-- 
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