1 // Copyright 2018 The PDFium Authors
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
6
7 #include "xfa/fxfa/cxfa_imagerenderer.h"
8
9 #include <utility>
10
11 #include "core/fxcrt/check.h"
12 #include "core/fxcrt/check_op.h"
13 #include "core/fxge/agg/cfx_agg_imagerenderer.h"
14 #include "core/fxge/cfx_renderdevice.h"
15 #include "core/fxge/dib/cfx_dibitmap.h"
16
CXFA_ImageRenderer(CFX_RenderDevice * device,RetainPtr<CFX_DIBitmap> bitmap,const CFX_Matrix & image_to_device)17 CXFA_ImageRenderer::CXFA_ImageRenderer(CFX_RenderDevice* device,
18 RetainPtr<CFX_DIBitmap> bitmap,
19 const CFX_Matrix& image_to_device)
20 : m_ImageMatrix(image_to_device),
21 m_pDevice(device),
22 m_pBitmap(std::move(bitmap)) {
23 // Assume this always draws into CFX_DefaultRenderDevice.
24 CHECK(m_pDevice);
25 CHECK(m_pDevice->GetRenderCaps() & FXRC_GET_BITS);
26 CHECK(m_pBitmap);
27 }
28
29 CXFA_ImageRenderer::~CXFA_ImageRenderer() = default;
30
Start()31 bool CXFA_ImageRenderer::Start() {
32 FXDIB_ResampleOptions options;
33 options.bInterpolateBilinear = true;
34 RenderDeviceDriverIface::StartResult result = m_pDevice->StartDIBits(
35 m_pBitmap, /*alpha=*/1.0f, /*argb=*/0, m_ImageMatrix, options);
36 if (result.result == RenderDeviceDriverIface::Result::kFailure) {
37 return false;
38 }
39
40 CHECK_EQ(result.result, RenderDeviceDriverIface::Result::kSuccess);
41 m_DeviceHandle = std::move(result.agg_image_renderer);
42 if (!m_DeviceHandle) {
43 return false;
44 }
45
46 m_State = State::kStarted;
47 return true;
48 }
49
Continue()50 bool CXFA_ImageRenderer::Continue() {
51 CHECK_EQ(m_State, State::kStarted);
52 return m_pDevice->ContinueDIBits(m_DeviceHandle.get(), nullptr);
53 }
54