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From 2b951f702e692304f02a7dd1d8e8647a02e61b22 Mon Sep 17 00:00:00 2001
From: Paul Gideon Dann <pdgiddie@gmail.com>
Date: Wed, 20 May 2009 11:42:28 +0100
Subject: [PATCH 1/4] Cairo backend added to Qt4 wrapper
---
qt4/src/CMakeLists.txt | 15 ++++++++++
qt4/src/poppler-document.cc | 3 ++
qt4/src/poppler-page.cc | 70 +++++++++++++++++++++++++++++++++++++++++++++
qt4/src/poppler-qt4.h | 3 +-
qt4/tests/CMakeLists.txt | 5 ++++
5 files changed, 95 insertions(+), 1 deletion(-)
diff --git a/qt4/src/CMakeLists.txt b/qt4/src/CMakeLists.txt
index 189eca2..5338b55 100644
--- a/qt4/src/CMakeLists.txt
+++ b/qt4/src/CMakeLists.txt
@@ -6,6 +6,11 @@ include_directories(
${CMAKE_CURRENT_BINARY_DIR}
)
+if (HAVE_CAIRO)
+ include_directories(${CAIRO_INCLUDE_DIRS})
+ add_definitions(${CAIRO_CFLAGS})
+endif (HAVE_CAIRO)
+
set(poppler_qt4_SRCS
poppler-annotation.cc
poppler-document.cc
@@ -28,10 +33,20 @@ set(poppler_qt4_SRCS
poppler-media.cc
ArthurOutputDev.cc
)
+if (HAVE_CAIRO)
+ set(poppler_qt4_SRCS ${poppler_qt4_SRCS}
+ ${CMAKE_SOURCE_DIR}/poppler/CairoOutputDev.cc
+ ${CMAKE_SOURCE_DIR}/poppler/CairoRescaleBox.cc
+ ${CMAKE_SOURCE_DIR}/poppler/CairoFontEngine.cc
+ )
+endif(HAVE_CAIRO)
qt4_automoc(${poppler_qt4_SRCS})
add_library(poppler-qt4 SHARED ${poppler_qt4_SRCS})
set_target_properties(poppler-qt4 PROPERTIES VERSION 4.9.0 SOVERSION 4)
target_link_libraries(poppler-qt4 poppler ${QT4_QTCORE_LIBRARY} ${QT4_QTGUI_LIBRARY} ${QT4_QTXML_LIBRARY})
+if (HAVE_CAIRO)
+ target_link_libraries(poppler-qt4 ${CAIRO_LIBRARIES})
+endif (HAVE_CAIRO)
if(MSVC)
target_link_libraries(poppler-qt4 poppler ${poppler_LIBS})
endif(MSVC)
diff --git a/qt4/src/poppler-document.cc b/qt4/src/poppler-document.cc
index 94f997d..6decaaf 100644
--- a/qt4/src/poppler-document.cc
+++ b/qt4/src/poppler-document.cc
@@ -547,6 +547,9 @@ namespace Poppler {
ret << Document::SplashBackend;
#endif
ret << Document::ArthurBackend;
+#if defined(HAVE_CAIRO)
+ ret << Document::CairoBackend;
+#endif
return ret;
}
diff --git a/qt4/src/poppler-page.cc b/qt4/src/poppler-page.cc
index 83bcf4a..df1d344 100644
--- a/qt4/src/poppler-page.cc
+++ b/qt4/src/poppler-page.cc
@@ -40,6 +40,7 @@
#include <QtGui/QPainter>
#include <config.h>
+#include <math.h>
#include <PDFDoc.h>
#include <Catalog.h>
#include <Form.h>
@@ -53,6 +54,9 @@
#include <SplashOutputDev.h>
#include <splash/SplashBitmap.h>
#endif
+#if defined(HAVE_CAIRO)
+#include <CairoOutputDev.h>
+#endif
#include "poppler-private.h"
#include "poppler-page-transition-private.h"
@@ -405,6 +409,70 @@ QImage Page::renderToImage(double xres, double yres, int x, int y, int w, int h,
img = tmpimg;
break;
}
+ case Poppler::Document::CairoBackend:
+ {
+#if defined(HAVE_CAIRO)
+ CairoOutputDev *output_dev = new CairoOutputDev();
+ output_dev->startDoc(m_page->parentDoc->doc);
+ int buffer_width, buffer_height, rotate;
+ cairo_surface_t *surface;
+ cairo_t *cairo;
+
+ // If w or h are -1, that indicates the whole page, so we need to
+ // calculate how many pixels that corresponds to. Otherwise, we can use w
+ // or h directly for our buffer size.
+ const QSize pageSize = this->pageSize();
+ if (w == -1) {
+ const double xscale = xres / 72.0;
+ const double width = pageSize.width();;
+ buffer_width = (int) ceil(width * xscale);
+ } else {
+ buffer_width = w;
+ }
+ if (h == -1) {
+ const double yscale = yres / 72.0;
+ const double height = pageSize.height();
+ buffer_height = (int) ceil(height * yscale);
+ } else {
+ buffer_height = h;
+ }
+
+ rotate = rotation + m_page->page->getRotate();
+
+ // FIXME: Okular never provides a rotation value, so I don't have any way
+ // of testing this right now. The result is that subpixels are ordered
+ // incorrectly when the page is rotated.
+
+ //if (rotate == 90 || rotate == 270) {
+ // const double temp = height;
+ // height = width;
+ // width = temp;
+ //}
+
+ img = QImage(buffer_width, buffer_height, QImage::Format_ARGB32);
+ img.fill(Qt::white); // Never transparent
+
+ surface = cairo_image_surface_create_for_data(
+ img.bits(),
+ CAIRO_FORMAT_ARGB32,
+ buffer_width, buffer_height,
+ img.bytesPerLine());
+
+ cairo = cairo_create(surface);
+ output_dev->setCairo(cairo);
+
+ m_page->parentDoc->doc->displayPageSlice(
+ output_dev, m_page->index + 1, xres, yres, rotation, false, true,
+ false, x, y, w, h);
+
+ // Clean up
+ output_dev->setCairo(NULL);
+ cairo_destroy(cairo);
+ cairo_surface_destroy(surface);
+ delete output_dev;
+#endif
+ break;
+ }
}
return img;
@@ -447,6 +515,8 @@ bool Page::renderToPainter(QPainter* painter, double xres, double yres, int x, i
painter->restore();
return true;
}
+ case Poppler::Document::CairoBackend:
+ return false;
}
return false;
}
diff --git a/qt4/src/poppler-qt4.h b/qt4/src/poppler-qt4.h
index c0340a4..118f8ba 100644
--- a/qt4/src/poppler-qt4.h
+++ b/qt4/src/poppler-qt4.h
@@ -886,7 +886,8 @@ delete it;
*/
enum RenderBackend {
SplashBackend, ///< Splash backend
- ArthurBackend ///< Arthur (Qt4) backend
+ ArthurBackend, ///< Arthur (Qt4) backend
+ CairoBackend ///< Cairo backend
};
/**
diff --git a/qt4/tests/CMakeLists.txt b/qt4/tests/CMakeLists.txt
index bba868f..8c40471 100644
--- a/qt4/tests/CMakeLists.txt
+++ b/qt4/tests/CMakeLists.txt
@@ -8,6 +8,11 @@ include_directories(
${QT4_INCLUDE_DIR}
)
+if (HAVE_CAIRO)
+ include_directories(${CAIRO_INCLUDE_DIRS})
+ add_definitions(${CAIRO_CFLAGS})
+endif (HAVE_CAIRO)
+
macro(QT4_ADD_SIMPLETEST exe source)
string(REPLACE "-" "" test_name ${exe})
set(${test_name}_SOURCES
--
2.7.1
|