king
/
v811_spc009
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
Branches Tags
${ item.name }
Create tag ${ searchTerm }
Create branch ${ searchTerm }
from 'd5f7aa4152'
${ noResults }
v811_spc009/external/pdfium/xfa/fxgraphics/cxfa_graphics.cpp

428 lines
15 KiB
Raw Blame History

// Copyright 2014 PDFium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
#include "xfa/fxgraphics/cxfa_graphics.h"
#include <cmath>
#include <memory>
#include "core/fxge/cfx_defaultrenderdevice.h"
#include "core/fxge/cfx_renderdevice.h"
#include "core/fxge/cfx_unicodeencoding.h"
#include "core/fxge/dib/cfx_dibitmap.h"
#include "third_party/base/ptr_util.h"
#include "xfa/fxgraphics/cxfa_gecolor.h"
#include "xfa/fxgraphics/cxfa_gepath.h"
#include "xfa/fxgraphics/cxfa_gepattern.h"
#include "xfa/fxgraphics/cxfa_geshading.h"
namespace {
struct FX_HATCHDATA {
int32_t width;
int32_t height;
uint8_t maskBits[64];
};
const FX_HATCHDATA kHatchBitmapData[] = {
{16, // Horizontal
16,
{
0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff,
0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
}},
{16, // Vertical
16,
{
0x80, 0x80, 0x00, 0x00, 0x80, 0x80, 0x00, 0x00, 0x80, 0x80, 0x00,
0x00, 0x80, 0x80, 0x00, 0x00, 0x80, 0x80, 0x00, 0x00, 0x80, 0x80,
0x00, 0x00, 0x80, 0x80, 0x00, 0x00, 0x80, 0x80, 0x00, 0x00, 0x80,
0x80, 0x00, 0x00, 0x80, 0x80, 0x00, 0x00, 0x80, 0x80, 0x00, 0x00,
0x80, 0x80, 0x00, 0x00, 0x80, 0x80, 0x00, 0x00, 0x80, 0x80, 0x00,
0x00, 0x80, 0x80, 0x00, 0x00, 0x80, 0x80, 0x00, 0x00,
}},
{16, // ForwardDiagonal
16,
{
0x80, 0x80, 0x00, 0x00, 0x40, 0x40, 0x00, 0x00, 0x20, 0x20, 0x00,
0x00, 0x10, 0x10, 0x00, 0x00, 0x08, 0x08, 0x00, 0x00, 0x04, 0x04,
0x00, 0x00, 0x02, 0x02, 0x00, 0x00, 0x01, 0x01, 0x00, 0x00, 0x80,
0x80, 0x00, 0x00, 0x40, 0x40, 0x00, 0x00, 0x20, 0x20, 0x00, 0x00,
0x10, 0x10, 0x00, 0x00, 0x08, 0x08, 0x00, 0x00, 0x04, 0x04, 0x00,
0x00, 0x02, 0x02, 0x00, 0x00, 0x01, 0x01, 0x00, 0x00,
}},
{16, // BackwardDiagonal
16,
{
0x01, 0x01, 0x00, 0x00, 0x02, 0x02, 0x00, 0x00, 0x04, 0x04, 0x00,
0x00, 0x08, 0x08, 0x00, 0x00, 0x10, 0x10, 0x00, 0x00, 0x20, 0x20,
0x00, 0x00, 0x40, 0x40, 0x00, 0x00, 0x80, 0x80, 0x00, 0x00, 0x01,
0x01, 0x00, 0x00, 0x02, 0x02, 0x00, 0x00, 0x04, 0x04, 0x00, 0x00,
0x08, 0x08, 0x00, 0x00, 0x10, 0x10, 0x00, 0x00, 0x20, 0x20, 0x00,
0x00, 0x40, 0x40, 0x00, 0x00, 0x80, 0x80, 0x00, 0x00,
}},
{16, // Cross
16,
{
0xff, 0xff, 0x00, 0x00, 0x80, 0x80, 0x00, 0x00, 0x80, 0x80, 0x00,
0x00, 0x80, 0x80, 0x00, 0x00, 0x80, 0x80, 0x00, 0x00, 0x80, 0x80,
0x00, 0x00, 0x80, 0x80, 0x00, 0x00, 0x80, 0x80, 0x00, 0x00, 0xff,
0xff, 0x00, 0x00, 0x80, 0x80, 0x00, 0x00, 0x80, 0x80, 0x00, 0x00,
0x80, 0x80, 0x00, 0x00, 0x80, 0x80, 0x00, 0x00, 0x80, 0x80, 0x00,
0x00, 0x80, 0x80, 0x00, 0x00, 0x80, 0x80, 0x00, 0x00,
}},
{16, // DiagonalCross
16,
{
0x81, 0x81, 0x00, 0x00, 0x42, 0x42, 0x00, 0x00, 0x24, 0x24, 0x00,
0x00, 0x18, 0x18, 0x00, 0x00, 0x18, 0x18, 0x00, 0x00, 0x24, 0x24,
0x00, 0x00, 0x42, 0x42, 0x00, 0x00, 0x81, 0x81, 0x00, 0x00, 0x81,
0x81, 0x00, 0x00, 0x42, 0x42, 0x00, 0x00, 0x24, 0x24, 0x00, 0x00,
0x18, 0x18, 0x00, 0x00, 0x18, 0x18, 0x00, 0x00, 0x24, 0x24, 0x00,
0x00, 0x42, 0x42, 0x00, 0x00, 0x81, 0x81, 0x00, 0x00,
}},
};
const FX_HATCHDATA kHatchPlaceHolder = {
0,
0,
{
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
}};
const FX_HATCHDATA& GetHatchBitmapData(size_t index) {
return index < FX_ArraySize(kHatchBitmapData) ? kHatchBitmapData[index]
: kHatchPlaceHolder;
}
} // namespace
CXFA_Graphics::CXFA_Graphics(CFX_RenderDevice* renderDevice)
: m_renderDevice(renderDevice) {
ASSERT(m_renderDevice);
}
CXFA_Graphics::~CXFA_Graphics() = default;
void CXFA_Graphics::SaveGraphState() {
m_renderDevice->SaveState();
m_infoStack.push_back(pdfium::MakeUnique<TInfo>(m_info));
}
void CXFA_Graphics::RestoreGraphState() {
m_renderDevice->RestoreState(false);
if (m_infoStack.empty())
return;
m_info = *m_infoStack.back();
m_infoStack.pop_back();
return;
}
void CXFA_Graphics::SetLineCap(CFX_GraphStateData::LineCap lineCap) {
m_info.graphState.m_LineCap = lineCap;
}
void CXFA_Graphics::SetLineDash(float dashPhase,
const float* dashArray,
size_t dashCount) {
ASSERT(dashArray);
ASSERT(dashCount);
float scale = m_info.isActOnDash ? m_info.graphState.m_LineWidth : 1.0;
m_info.graphState.m_DashPhase = dashPhase;
m_info.graphState.m_DashArray.resize(dashCount);
for (size_t i = 0; i < dashCount; i++)
m_info.graphState.m_DashArray[i] = dashArray[i] * scale;
}
void CXFA_Graphics::SetSolidLineDash() {
m_info.graphState.m_DashArray.clear();
}
void CXFA_Graphics::SetLineWidth(float lineWidth) {
m_info.graphState.m_LineWidth = lineWidth;
}
void CXFA_Graphics::EnableActOnDash() {
m_info.isActOnDash = true;
}
void CXFA_Graphics::SetStrokeColor(const CXFA_GEColor& color) {
m_info.strokeColor = color;
}
void CXFA_Graphics::SetFillColor(const CXFA_GEColor& color) {
m_info.fillColor = color;
}
void CXFA_Graphics::StrokePath(CXFA_GEPath* path, const CFX_Matrix* matrix) {
if (path)
RenderDeviceStrokePath(path, matrix);
}
void CXFA_Graphics::FillPath(CXFA_GEPath* path,
FX_FillMode fillMode,
const CFX_Matrix* matrix) {
if (path)
RenderDeviceFillPath(path, fillMode, matrix);
}
void CXFA_Graphics::ConcatMatrix(const CFX_Matrix* matrix) {
if (matrix)
m_info.CTM.Concat(*matrix);
}
const CFX_Matrix* CXFA_Graphics::GetMatrix() const {
return &m_info.CTM;
}
CFX_RectF CXFA_Graphics::GetClipRect() const {
FX_RECT r = m_renderDevice->GetClipBox();
return CFX_RectF(r.left, r.top, r.Width(), r.Height());
}
void CXFA_Graphics::SetClipRect(const CFX_RectF& rect) {
m_renderDevice->SetClip_Rect(
FX_RECT(FXSYS_roundf(rect.left), FXSYS_roundf(rect.top),
FXSYS_roundf(rect.right()), FXSYS_roundf(rect.bottom())));
}
CFX_RenderDevice* CXFA_Graphics::GetRenderDevice() {
return m_renderDevice;
}
void CXFA_Graphics::RenderDeviceStrokePath(const CXFA_GEPath* path,
const CFX_Matrix* matrix) {
if (m_info.strokeColor.GetType() != CXFA_GEColor::Solid)
return;
CFX_Matrix m = m_info.CTM;
if (matrix)
m.Concat(*matrix);
m_renderDevice->DrawPath(path->GetPathData(), &m, &m_info.graphState, 0x0,
m_info.strokeColor.GetArgb(), 0);
}
void CXFA_Graphics::RenderDeviceFillPath(const CXFA_GEPath* path,
FX_FillMode fillMode,
const CFX_Matrix* matrix) {
CFX_Matrix m = m_info.CTM;
if (matrix)
m.Concat(*matrix);
switch (m_info.fillColor.GetType()) {
case CXFA_GEColor::Solid:
m_renderDevice->DrawPath(path->GetPathData(), &m, &m_info.graphState,
m_info.fillColor.GetArgb(), 0x0, fillMode);
return;
case CXFA_GEColor::Pattern:
FillPathWithPattern(path, fillMode, m);
return;
case CXFA_GEColor::Shading:
FillPathWithShading(path, fillMode, m);
return;
default:
return;
}
}
void CXFA_Graphics::FillPathWithPattern(const CXFA_GEPath* path,
FX_FillMode fillMode,
const CFX_Matrix& matrix) {
RetainPtr<CFX_DIBitmap> bitmap = m_renderDevice->GetBitmap();
int32_t width = bitmap->GetWidth();
int32_t height = bitmap->GetHeight();
auto bmp = pdfium::MakeRetain<CFX_DIBitmap>();
bmp->Create(width, height, FXDIB_Argb);
m_renderDevice->GetDIBits(bmp, 0, 0);
FX_HatchStyle hatchStyle = m_info.fillColor.GetPattern()->m_hatchStyle;
const FX_HATCHDATA& data =
GetHatchBitmapData(static_cast<size_t>(hatchStyle));
auto mask = pdfium::MakeRetain<CFX_DIBitmap>();
mask->Create(data.width, data.height, FXDIB_1bppMask);
memcpy(mask->GetBuffer(), data.maskBits, mask->GetPitch() * data.height);
const CFX_FloatRect rectf =
matrix.TransformRect(path->GetPathData()->GetBoundingBox());
const FX_RECT rect = rectf.ToRoundedFxRect();
CFX_DefaultRenderDevice device;
device.Attach(bmp, false, nullptr, false);
device.FillRect(rect, m_info.fillColor.GetPattern()->m_backArgb);
for (int32_t j = rect.bottom; j < rect.top; j += mask->GetHeight()) {
for (int32_t i = rect.left; i < rect.right; i += mask->GetWidth())
device.SetBitMask(mask, i, j, m_info.fillColor.GetPattern()->m_foreArgb);
}
CFX_RenderDevice::StateRestorer restorer(m_renderDevice);
m_renderDevice->SetClip_PathFill(path->GetPathData(), &matrix, fillMode);
SetDIBitsWithMatrix(bmp, CFX_Matrix());
}
void CXFA_Graphics::FillPathWithShading(const CXFA_GEPath* path,
FX_FillMode fillMode,
const CFX_Matrix& matrix) {
RetainPtr<CFX_DIBitmap> bitmap = m_renderDevice->GetBitmap();
int32_t width = bitmap->GetWidth();
int32_t height = bitmap->GetHeight();
float start_x = m_info.fillColor.GetShading()->m_beginPoint.x;
float start_y = m_info.fillColor.GetShading()->m_beginPoint.y;
float end_x = m_info.fillColor.GetShading()->m_endPoint.x;
float end_y = m_info.fillColor.GetShading()->m_endPoint.y;
auto bmp = pdfium::MakeRetain<CFX_DIBitmap>();
bmp->Create(width, height, FXDIB_Argb);
m_renderDevice->GetDIBits(bmp, 0, 0);
int32_t pitch = bmp->GetPitch();
bool result = false;
switch (m_info.fillColor.GetShading()->m_type) {
case FX_SHADING_Axial: {
float x_span = end_x - start_x;
float y_span = end_y - start_y;
float axis_len_square = (x_span * x_span) + (y_span * y_span);
for (int32_t row = 0; row < height; row++) {
uint32_t* dib_buf =
reinterpret_cast<uint32_t*>(bmp->GetBuffer() + row * pitch);
for (int32_t column = 0; column < width; column++) {
float scale = 0.0f;
if (axis_len_square) {
float y = static_cast<float>(row);
float x = static_cast<float>(column);
scale = (((x - start_x) * x_span) + ((y - start_y) * y_span)) /
axis_len_square;
if (std::isnan(scale) || scale < 0.0f) {
if (!m_info.fillColor.GetShading()->m_isExtendedBegin)
continue;
scale = 0.0f;
} else if (scale > 1.0f) {
if (!m_info.fillColor.GetShading()->m_isExtendedEnd)
continue;
scale = 1.0f;
}
}
int32_t index = static_cast<int32_t>(scale * (FX_SHADING_Steps - 1));
dib_buf[column] = m_info.fillColor.GetShading()->m_argbArray[index];
}
}
result = true;
break;
}
case FX_SHADING_Radial: {
float start_r = m_info.fillColor.GetShading()->m_beginRadius;
float end_r = m_info.fillColor.GetShading()->m_endRadius;
float a = ((start_x - end_x) * (start_x - end_x)) +
((start_y - end_y) * (start_y - end_y)) -
((start_r - end_r) * (start_r - end_r));
for (int32_t row = 0; row < height; row++) {
uint32_t* dib_buf = (uint32_t*)(bmp->GetBuffer() + row * pitch);
for (int32_t column = 0; column < width; column++) {
float x = (float)(column);
float y = (float)(row);
float b = -2 * (((x - start_x) * (end_x - start_x)) +
((y - start_y) * (end_y - start_y)) +
(start_r * (end_r - start_r)));
float c = ((x - start_x) * (x - start_x)) +
((y - start_y) * (y - start_y)) - (start_r * start_r);
float s;
if (a == 0) {
s = -c / b;
} else {
float b2_4ac = (b * b) - 4 * (a * c);
if (b2_4ac < 0) {
continue;
}
float root = (sqrt(b2_4ac));
float s1, s2;
if (a > 0) {
s1 = (-b - root) / (2 * a);
s2 = (-b + root) / (2 * a);
} else {
s2 = (-b - root) / (2 * a);
s1 = (-b + root) / (2 * a);
}
if (s2 <= 1.0f || m_info.fillColor.GetShading()->m_isExtendedEnd) {
s = (s2);
} else {
s = (s1);
}
if ((start_r) + s * (end_r - start_r) < 0) {
continue;
}
}
if (std::isnan(s) || s < 0.0f) {
if (!m_info.fillColor.GetShading()->m_isExtendedBegin)
continue;
s = 0.0f;
}
if (s > 1.0f) {
if (!m_info.fillColor.GetShading()->m_isExtendedEnd)
continue;
s = 1.0f;
}
int index = (int32_t)(s * (FX_SHADING_Steps - 1));
dib_buf[column] = m_info.fillColor.GetShading()->m_argbArray[index];
}
}
result = true;
break;
}
default: {
result = false;
break;
}
}
if (result) {
CFX_RenderDevice::StateRestorer restorer(m_renderDevice);
m_renderDevice->SetClip_PathFill(path->GetPathData(), &matrix, fillMode);
SetDIBitsWithMatrix(bmp, matrix);
}
}
void CXFA_Graphics::SetDIBitsWithMatrix(const RetainPtr<CFX_DIBBase>& source,
const CFX_Matrix& matrix) {
if (matrix.IsIdentity()) {
m_renderDevice->SetDIBits(source, 0, 0);
} else {
CFX_Matrix m((float)source->GetWidth(), 0, 0, (float)source->GetHeight(), 0,
0);
m.Concat(matrix);
int32_t left;
int32_t top;
RetainPtr<CFX_DIBitmap> bmp1 = source->FlipImage(false, true);
RetainPtr<CFX_DIBitmap> bmp2 = bmp1->TransformTo(m, &left, &top);
m_renderDevice->SetDIBits(bmp2, left, top);
}
}
CXFA_Graphics::TInfo::TInfo()
: isActOnDash(false), strokeColor(nullptr), fillColor(nullptr) {}
CXFA_Graphics::TInfo::TInfo(const TInfo& info)
: graphState(info.graphState),
CTM(info.CTM),
isActOnDash(info.isActOnDash),
strokeColor(info.strokeColor),
fillColor(info.fillColor) {}
CXFA_Graphics::TInfo& CXFA_Graphics::TInfo::operator=(const TInfo& other) {
graphState = other.graphState;
CTM = other.CTM;
isActOnDash = other.isActOnDash;
strokeColor = other.strokeColor;
fillColor = other.fillColor;
return *this;
}
Reference in new issue View Git Blame Copy Permalink