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authorrbpotter <rbpotter@chromium.org>2017-04-17 09:10:21 -0700
committerChromium commit bot <commit-bot@chromium.org>2017-04-18 00:26:02 +0000
commitcec01808e8b155f598b2a9ea527736ce774e76a2 (patch)
tree9614ce31345bb73e9d7c1a438c10bb83776599c3 /core/fpdfapi/page
parent080dfd89269a95713d31d66829016d4885afe76b (diff)
downloadpdfium-cec01808e8b155f598b2a9ea527736ce774e76a2.tar.xz
Render image masks individually instead of rendering the entire page as
a bitmap in order to reduce spool sizes. BUG=682156, 674771 Change-Id: Ic743ba729a7b9609be18fb620a5eb6bc440aed6a Reviewed-on: https://pdfium-review.googlesource.com/2916 Commit-Queue: Lei Zhang <thestig@chromium.org> Reviewed-by: Lei Zhang <thestig@chromium.org>
Diffstat (limited to 'core/fpdfapi/page')
-rw-r--r--core/fpdfapi/page/cpdf_pageobjectholder.cpp5
-rw-r--r--core/fpdfapi/page/cpdf_pageobjectholder.h11
-rw-r--r--core/fpdfapi/page/cpdf_streamcontentparser.cpp10
3 files changed, 18 insertions, 8 deletions
diff --git a/core/fpdfapi/page/cpdf_pageobjectholder.cpp b/core/fpdfapi/page/cpdf_pageobjectholder.cpp
index 974baa65a0..5f5597e5ac 100644
--- a/core/fpdfapi/page/cpdf_pageobjectholder.cpp
+++ b/core/fpdfapi/page/cpdf_pageobjectholder.cpp
@@ -21,7 +21,6 @@ CPDF_PageObjectHolder::CPDF_PageObjectHolder()
m_pResources(nullptr),
m_Transparency(0),
m_bBackgroundAlphaNeeded(false),
- m_bHasImageMask(false),
m_ParseState(CONTENT_NOT_PARSED) {}
CPDF_PageObjectHolder::~CPDF_PageObjectHolder() {}
@@ -37,6 +36,10 @@ void CPDF_PageObjectHolder::ContinueParse(IFX_Pause* pPause) {
}
}
+void CPDF_PageObjectHolder::AddImageMaskBoundingBox(const CFX_FloatRect& box) {
+ m_MaskBoundingBoxes.push_back(box);
+}
+
void CPDF_PageObjectHolder::Transform(const CFX_Matrix& matrix) {
for (auto& pObj : m_PageObjectList)
pObj->Transform(matrix);
diff --git a/core/fpdfapi/page/cpdf_pageobjectholder.h b/core/fpdfapi/page/cpdf_pageobjectholder.h
index aee7617c1f..0b88a86518 100644
--- a/core/fpdfapi/page/cpdf_pageobjectholder.h
+++ b/core/fpdfapi/page/cpdf_pageobjectholder.h
@@ -8,6 +8,7 @@
#define CORE_FPDFAPI_PAGE_CPDF_PAGEOBJECTHOLDER_H_
#include <memory>
+#include <vector>
#include "core/fpdfapi/page/cpdf_pageobjectlist.h"
#include "core/fxcrt/fx_coordinates.h"
@@ -41,9 +42,11 @@ class CPDF_PageObjectHolder {
m_bBackgroundAlphaNeeded = needed;
}
- bool HasImageMask() const { return m_bHasImageMask; }
- void SetHasImageMask(bool value) { m_bHasImageMask = value; }
-
+ bool HasImageMask() const { return !m_MaskBoundingBoxes.empty(); }
+ const std::vector<CFX_FloatRect>& GetMaskBoundingBoxes() const {
+ return m_MaskBoundingBoxes;
+ }
+ void AddImageMaskBoundingBox(const CFX_FloatRect& box);
void Transform(const CFX_Matrix& matrix);
CFX_FloatRect CalcBoundingBox() const;
@@ -61,7 +64,7 @@ class CPDF_PageObjectHolder {
void LoadTransInfo();
bool m_bBackgroundAlphaNeeded;
- bool m_bHasImageMask;
+ std::vector<CFX_FloatRect> m_MaskBoundingBoxes;
ParseState m_ParseState;
std::unique_ptr<CPDF_ContentParser> m_pParser;
CPDF_PageObjectList m_PageObjectList;
diff --git a/core/fpdfapi/page/cpdf_streamcontentparser.cpp b/core/fpdfapi/page/cpdf_streamcontentparser.cpp
index 30686133c2..d9f12f121b 100644
--- a/core/fpdfapi/page/cpdf_streamcontentparser.cpp
+++ b/core/fpdfapi/page/cpdf_streamcontentparser.cpp
@@ -735,7 +735,11 @@ void CPDF_StreamContentParser::Handle_ExecuteXObject() {
CFX_ByteString name = GetString(0);
if (name == m_LastImageName && m_pLastImage && m_pLastImage->GetStream() &&
m_pLastImage->GetStream()->GetObjNum()) {
- AddImage(m_pLastImage);
+ CPDF_ImageObject* pObj = AddImage(m_pLastImage);
+ // Record the bounding box of this image, so rendering code can draw it
+ // properly.
+ if (pObj->GetImage()->IsMask())
+ m_pObjectHolder->AddImageMaskBoundingBox(pObj->GetRect());
return;
}
@@ -757,8 +761,8 @@ void CPDF_StreamContentParser::Handle_ExecuteXObject() {
m_LastImageName = name;
m_pLastImage = pObj->GetImage();
- if (!m_pObjectHolder->HasImageMask())
- m_pObjectHolder->SetHasImageMask(m_pLastImage->IsMask());
+ if (m_pLastImage->IsMask())
+ m_pObjectHolder->AddImageMaskBoundingBox(pObj->GetRect());
} else if (type == "Form") {
AddForm(pXObject);
}