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pdfium / pdfium / f44812cf6d7559dd2a0bbc25a684e54675f4794d / . / core / fxge / cfx_renderdevice.cpp
blob: 310a16512c9f3c92e59815be8d312e1d3235aefb [file] [log] [blame]
// Copyright 2016 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 "core/fxge/cfx_renderdevice.h"
#include <algorithm>
#include <memory>
#include <utility>
#include <vector>
#include "core/fxcrt/fx_safe_types.h"
#include "core/fxge/cfx_defaultrenderdevice.h"
#include "core/fxge/cfx_facecache.h"
#include "core/fxge/cfx_gemodule.h"
#include "core/fxge/cfx_graphstatedata.h"
#include "core/fxge/cfx_pathdata.h"
#include "core/fxge/dib/cfx_imagerenderer.h"
#include "core/fxge/ifx_renderdevicedriver.h"
#if defined _SKIA_SUPPORT_ || defined _SKIA_SUPPORT_PATHS_
#include "third_party/skia/include/core/SkTypes.h"
#endif
namespace {
void AdjustGlyphSpace(std::vector<FXTEXT_GLYPHPOS>* pGlyphAndPos) {
ASSERT(pGlyphAndPos->size() > 1);
std::vector<FXTEXT_GLYPHPOS>& glyphs = *pGlyphAndPos;
bool bVertical = glyphs.back().m_Origin.x == glyphs.front().m_Origin.x;
if (!bVertical && (glyphs.back().m_Origin.y != glyphs.front().m_Origin.y))
return;
for (size_t i = glyphs.size() - 1; i > 1; --i) {
FXTEXT_GLYPHPOS& next = glyphs[i];
int next_origin = bVertical ? next.m_Origin.y : next.m_Origin.x;
float next_origin_f = bVertical ? next.m_fOrigin.y : next.m_fOrigin.x;
FXTEXT_GLYPHPOS& current = glyphs[i - 1];
int& current_origin = bVertical ? current.m_Origin.y : current.m_Origin.x;
float current_origin_f =
bVertical ? current.m_fOrigin.y : current.m_fOrigin.x;
int space = next_origin - current_origin;
float space_f = next_origin_f - current_origin_f;
float error = fabs(space_f) - fabs(static_cast<float>(space));
if (error > 0.5f)
current_origin += space > 0 ? -1 : 1;
}
}
const uint8_t g_TextGammaAdjust[256] = {
0, 2, 3, 4, 6, 7, 8, 10, 11, 12, 13, 15, 16, 17, 18,
19, 21, 22, 23, 24, 25, 26, 27, 29, 30, 31, 32, 33, 34, 35,
36, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 51, 52,
53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67,
68, 69, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83,
84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98,
99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113,
114, 115, 116, 117, 118, 119, 120, 121, 122, 123, 124, 125, 126, 127, 128,
129, 129, 130, 131, 132, 133, 134, 135, 136, 137, 138, 139, 140, 141, 142,
143, 144, 145, 146, 147, 148, 149, 150, 151, 152, 153, 154, 155, 156, 156,
157, 158, 159, 160, 161, 162, 163, 164, 165, 166, 167, 168, 169, 170, 171,
172, 173, 174, 174, 175, 176, 177, 178, 179, 180, 181, 182, 183, 184, 185,
186, 187, 188, 189, 190, 190, 191, 192, 193, 194, 195, 196, 197, 198, 199,
200, 201, 202, 203, 204, 204, 205, 206, 207, 208, 209, 210, 211, 212, 213,
214, 215, 216, 217, 217, 218, 219, 220, 221, 222, 223, 224, 225, 226, 227,
228, 228, 229, 230, 231, 232, 233, 234, 235, 236, 237, 238, 239, 239, 240,
241, 242, 243, 244, 245, 246, 247, 248, 249, 250, 250, 251, 252, 253, 254,
255,
};
int TextGammaAdjust(int value) {
ASSERT(value >= 0);
ASSERT(value <= 255);
return g_TextGammaAdjust[value];
}
int CalcAlpha(int src, int alpha) {
return src * alpha / 255;
}
void Merge(uint8_t src, int channel, int alpha, uint8_t* dest) {
*dest = FXDIB_ALPHA_MERGE(*dest, channel, CalcAlpha(src, alpha));
}
void MergeGammaAdjust(uint8_t src, int channel, int alpha, uint8_t* dest) {
*dest =
FXDIB_ALPHA_MERGE(*dest, channel, CalcAlpha(TextGammaAdjust(src), alpha));
}
void MergeGammaAdjustBgr(const uint8_t* src,
int r,
int g,
int b,
int a,
uint8_t* dest) {
MergeGammaAdjust(src[0], b, a, &dest[0]);
MergeGammaAdjust(src[1], g, a, &dest[1]);
MergeGammaAdjust(src[2], r, a, &dest[2]);
}
void MergeGammaAdjustRgb(const uint8_t* src,
int r,
int g,
int b,
int a,
uint8_t* dest) {
MergeGammaAdjust(src[2], b, a, &dest[0]);
MergeGammaAdjust(src[1], g, a, &dest[1]);
MergeGammaAdjust(src[0], r, a, &dest[2]);
}
int AverageRgb(const uint8_t* src) {
return (src[0] + src[1] + src[2]) / 3;
}
uint8_t CalculateDestAlpha(uint8_t back_alpha, int src_alpha) {
return back_alpha + src_alpha - back_alpha * src_alpha / 255;
}
void ApplyAlpha(uint8_t* dest, int b, int g, int r, int alpha) {
dest[0] = FXDIB_ALPHA_MERGE(dest[0], b, alpha);
dest[1] = FXDIB_ALPHA_MERGE(dest[1], g, alpha);
dest[2] = FXDIB_ALPHA_MERGE(dest[2], r, alpha);
}
void ApplyDestAlpha(uint8_t back_alpha,
int src_alpha,
int r,
int g,
int b,
uint8_t* dest) {
uint8_t dest_alpha = CalculateDestAlpha(back_alpha, src_alpha);
ApplyAlpha(dest, b, g, r, src_alpha * 255 / dest_alpha);
dest[3] = dest_alpha;
}
void NormalizeArgb(int src_value,
int r,
int g,
int b,
int a,
uint8_t* dest,
int src_alpha) {
uint8_t back_alpha = dest[3];
if (back_alpha == 0)
FXARGB_SETDIB(dest, FXARGB_MAKE(src_alpha, r, g, b));
else if (src_alpha != 0)
ApplyDestAlpha(back_alpha, src_alpha, r, g, b, dest);
}
void NormalizeDest(bool has_alpha,
int src_value,
int r,
int g,
int b,
int a,
uint8_t* dest) {
if (has_alpha) {
NormalizeArgb(src_value, r, g, b, a, dest,
CalcAlpha(TextGammaAdjust(src_value), a));
return;
}
int src_alpha = CalcAlpha(TextGammaAdjust(src_value), a);
if (src_alpha == 0)
return;
ApplyAlpha(dest, b, g, r, src_alpha);
}
void NormalizeSrc(bool has_alpha,
int src_value,
int r,
int g,
int b,
int a,
uint8_t* dest) {
if (!has_alpha) {
ApplyAlpha(dest, b, g, r, CalcAlpha(TextGammaAdjust(src_value), a));
return;
}
int src_alpha = CalcAlpha(TextGammaAdjust(src_value), a);
if (src_alpha != 0)
NormalizeArgb(src_value, r, g, b, a, dest, src_alpha);
}
void NextPixel(uint8_t** src_scan, uint8_t** dst_scan, int bpp) {
*src_scan += 3;
*dst_scan += bpp;
}
void SetAlpha(bool has_alpha, uint8_t* alpha) {
if (has_alpha)
alpha[3] = 255;
}
void DrawNormalTextHelper(const CFX_RetainPtr<CFX_DIBitmap>& bitmap,
const CFX_RetainPtr<CFX_DIBitmap>& pGlyph,
int nrows,
int left,
int top,
int start_col,
int end_col,
bool bNormal,
bool bBGRStripe,
int x_subpixel,
int a,
int r,
int g,
int b) {
const bool has_alpha = bitmap->GetFormat() == FXDIB_Argb;
uint8_t* src_buf = pGlyph->GetBuffer();
int src_pitch = pGlyph->GetPitch();
uint8_t* dest_buf = bitmap->GetBuffer();
int dest_pitch = bitmap->GetPitch();
const int Bpp = has_alpha ? 4 : bitmap->GetBPP() / 8;
for (int row = 0; row < nrows; ++row) {
int dest_row = row + top;
if (dest_row < 0 || dest_row >= bitmap->GetHeight())
continue;
uint8_t* src_scan = src_buf + row * src_pitch + (start_col - left) * 3;
uint8_t* dest_scan = dest_buf + dest_row * dest_pitch + start_col * Bpp;
if (bBGRStripe) {
if (x_subpixel == 0) {
for (int col = start_col; col < end_col; ++col) {
if (has_alpha) {
Merge(src_scan[2], r, a, &dest_scan[2]);
Merge(src_scan[1], g, a, &dest_scan[1]);
Merge(src_scan[0], b, a, &dest_scan[0]);
} else {
MergeGammaAdjustBgr(&src_scan[0], r, g, b, a, &dest_scan[0]);
}
SetAlpha(has_alpha, dest_scan);
NextPixel(&src_scan, &dest_scan, Bpp);
}
continue;
}
if (x_subpixel == 1) {
MergeGammaAdjust(src_scan[1], r, a, &dest_scan[2]);
MergeGammaAdjust(src_scan[0], g, a, &dest_scan[1]);
if (start_col > left)
MergeGammaAdjust(src_scan[-1], b, a, &dest_scan[0]);
SetAlpha(has_alpha, dest_scan);
NextPixel(&src_scan, &dest_scan, Bpp);
for (int col = start_col + 1; col < end_col - 1; ++col) {
MergeGammaAdjustBgr(&src_scan[-1], r, g, b, a, &dest_scan[0]);
SetAlpha(has_alpha, dest_scan);
NextPixel(&src_scan, &dest_scan, Bpp);
}
continue;
}
MergeGammaAdjust(src_scan[0], r, a, &dest_scan[2]);
if (start_col > left) {
MergeGammaAdjust(src_scan[-1], g, a, &dest_scan[1]);
MergeGammaAdjust(src_scan[-2], b, a, &dest_scan[0]);
}
SetAlpha(has_alpha, dest_scan);
NextPixel(&src_scan, &dest_scan, Bpp);
for (int col = start_col + 1; col < end_col - 1; ++col) {
MergeGammaAdjustBgr(&src_scan[-2], r, g, b, a, &dest_scan[0]);
SetAlpha(has_alpha, dest_scan);
NextPixel(&src_scan, &dest_scan, Bpp);
}
continue;
}
if (x_subpixel == 0) {
for (int col = start_col; col < end_col; ++col) {
if (bNormal) {
int src_value = AverageRgb(&src_scan[0]);
NormalizeDest(has_alpha, src_value, r, g, b, a, dest_scan);
} else {
MergeGammaAdjustRgb(&src_scan[0], r, g, b, a, &dest_scan[0]);
SetAlpha(has_alpha, dest_scan);
}
NextPixel(&src_scan, &dest_scan, Bpp);
}
continue;
}
if (x_subpixel == 1) {
if (bNormal) {
int src_value = start_col > left ? AverageRgb(&src_scan[-1])
: (src_scan[0] + src_scan[1]) / 3;
NormalizeSrc(has_alpha, src_value, r, g, b, a, dest_scan);
} else {
if (start_col > left)
MergeGammaAdjust(src_scan[-1], r, a, &dest_scan[2]);
MergeGammaAdjust(src_scan[0], g, a, &dest_scan[1]);
MergeGammaAdjust(src_scan[1], b, a, &dest_scan[0]);
SetAlpha(has_alpha, dest_scan);
}
NextPixel(&src_scan, &dest_scan, Bpp);
for (int col = start_col + 1; col < end_col; ++col) {
if (bNormal) {
int src_value = AverageRgb(&src_scan[-1]);
NormalizeDest(has_alpha, src_value, r, g, b, a, dest_scan);
} else {
MergeGammaAdjustRgb(&src_scan[-1], r, g, b, a, &dest_scan[0]);
SetAlpha(has_alpha, dest_scan);
}
NextPixel(&src_scan, &dest_scan, Bpp);
}
continue;
}
if (bNormal) {
int src_value =
start_col > left ? AverageRgb(&src_scan[-2]) : src_scan[0] / 3;
NormalizeSrc(has_alpha, src_value, r, g, b, a, dest_scan);
} else {
if (start_col > left) {
MergeGammaAdjust(src_scan[-2], r, a, &dest_scan[2]);
MergeGammaAdjust(src_scan[-1], g, a, &dest_scan[1]);
}
MergeGammaAdjust(src_scan[0], b, a, &dest_scan[0]);
SetAlpha(has_alpha, dest_scan);
}
NextPixel(&src_scan, &dest_scan, Bpp);
for (int col = start_col + 1; col < end_col; ++col) {
if (bNormal) {
int src_value = AverageRgb(&src_scan[-2]);
NormalizeDest(has_alpha, src_value, r, g, b, a, dest_scan);
} else {
MergeGammaAdjustRgb(&src_scan[-2], r, g, b, a, &dest_scan[0]);
SetAlpha(has_alpha, dest_scan);
}
NextPixel(&src_scan, &dest_scan, Bpp);
}
}
}
bool ShouldDrawDeviceText(const CFX_Font* pFont, uint32_t text_flags) {
#if _FXM_PLATFORM_ == _FXM_PLATFORM_APPLE_
if (text_flags & FXFONT_CIDFONT)
return false;
const CFX_ByteString bsPsName = pFont->GetPsName();
if (bsPsName.Find("+ZJHL") != FX_STRNPOS)
return false;
if (bsPsName == "CNAAJI+cmex10")
return false;
#endif
return true;
}
} // namespace
FXTEXT_CHARPOS::FXTEXT_CHARPOS()
: m_Unicode(0),
m_GlyphIndex(0),
m_FontCharWidth(0),
#if _FXM_PLATFORM_ == _FXM_PLATFORM_APPLE_
m_ExtGID(0),
#endif
m_FallbackFontPosition(0),
m_bGlyphAdjust(false),
m_bFontStyle(false) {
}
FXTEXT_CHARPOS::FXTEXT_CHARPOS(const FXTEXT_CHARPOS&) = default;
FXTEXT_CHARPOS::~FXTEXT_CHARPOS(){};
CFX_RenderDevice::CFX_RenderDevice()
: m_pBitmap(nullptr),
m_Width(0),
m_Height(0),
m_bpp(0),
m_RenderCaps(0),
m_DeviceClass(0) {}
CFX_RenderDevice::~CFX_RenderDevice() {
RestoreState(false);
#if defined _SKIA_SUPPORT_ || defined _SKIA_SUPPORT_PATHS_
Flush(true);
#endif
}
#if defined _SKIA_SUPPORT_ || defined _SKIA_SUPPORT_PATHS_
void CFX_RenderDevice::Flush(bool release) {
if (release)
m_pDeviceDriver.reset();
else
m_pDeviceDriver->Flush();
}
#endif
void CFX_RenderDevice::SetDeviceDriver(
std::unique_ptr<IFX_RenderDeviceDriver> pDriver) {
m_pDeviceDriver = std::move(pDriver);
InitDeviceInfo();
}
void CFX_RenderDevice::InitDeviceInfo() {
m_Width = m_pDeviceDriver->GetDeviceCaps(FXDC_PIXEL_WIDTH);
m_Height = m_pDeviceDriver->GetDeviceCaps(FXDC_PIXEL_HEIGHT);
m_bpp = m_pDeviceDriver->GetDeviceCaps(FXDC_BITS_PIXEL);
m_RenderCaps = m_pDeviceDriver->GetDeviceCaps(FXDC_RENDER_CAPS);
m_DeviceClass = m_pDeviceDriver->GetDeviceCaps(FXDC_DEVICE_CLASS);
if (!m_pDeviceDriver->GetClipBox(&m_ClipBox)) {
m_ClipBox.left = 0;
m_ClipBox.top = 0;
m_ClipBox.right = m_Width;
m_ClipBox.bottom = m_Height;
}
}
void CFX_RenderDevice::SaveState() {
m_pDeviceDriver->SaveState();
}
void CFX_RenderDevice::RestoreState(bool bKeepSaved) {
if (m_pDeviceDriver) {
m_pDeviceDriver->RestoreState(bKeepSaved);
UpdateClipBox();
}
}
int CFX_RenderDevice::GetDeviceCaps(int caps_id) const {
return m_pDeviceDriver->GetDeviceCaps(caps_id);
}
CFX_Matrix CFX_RenderDevice::GetCTM() const {
return m_pDeviceDriver->GetCTM();
}
bool CFX_RenderDevice::CreateCompatibleBitmap(
const CFX_RetainPtr<CFX_DIBitmap>& pDIB,
int width,
int height) const {
if (m_RenderCaps & FXRC_CMYK_OUTPUT) {
return pDIB->Create(
width, height,
m_RenderCaps & FXRC_ALPHA_OUTPUT ? FXDIB_Cmyka : FXDIB_Cmyk);
}
if (m_RenderCaps & FXRC_BYTEMASK_OUTPUT)
return pDIB->Create(width, height, FXDIB_8bppMask);
#if _FXM_PLATFORM_ == _FXM_PLATFORM_APPLE_ || defined _SKIA_SUPPORT_PATHS_
return pDIB->Create(
width, height,
m_RenderCaps & FXRC_ALPHA_OUTPUT ? FXDIB_Argb : FXDIB_Rgb32);
#else
return pDIB->Create(
width, height, m_RenderCaps & FXRC_ALPHA_OUTPUT ? FXDIB_Argb : FXDIB_Rgb);
#endif
}
bool CFX_RenderDevice::SetClip_PathFill(const CFX_PathData* pPathData,
const CFX_Matrix* pObject2Device,
int fill_mode) {
if (!m_pDeviceDriver->SetClip_PathFill(pPathData, pObject2Device,
fill_mode)) {
return false;
}
UpdateClipBox();
return true;
}
bool CFX_RenderDevice::SetClip_PathStroke(
const CFX_PathData* pPathData,
const CFX_Matrix* pObject2Device,
const CFX_GraphStateData* pGraphState) {
if (!m_pDeviceDriver->SetClip_PathStroke(pPathData, pObject2Device,
pGraphState)) {
return false;
}
UpdateClipBox();
return true;
}
bool CFX_RenderDevice::SetClip_Rect(const FX_RECT& rect) {
CFX_PathData path;
path.AppendRect(rect.left, rect.bottom, rect.right, rect.top);
if (!SetClip_PathFill(&path, nullptr, FXFILL_WINDING))
return false;
UpdateClipBox();
return true;
}
void CFX_RenderDevice::UpdateClipBox() {
if (m_pDeviceDriver->GetClipBox(&m_ClipBox))
return;
m_ClipBox.left = 0;
m_ClipBox.top = 0;
m_ClipBox.right = m_Width;
m_ClipBox.bottom = m_Height;
}
bool CFX_RenderDevice::DrawPathWithBlend(const CFX_PathData* pPathData,
const CFX_Matrix* pObject2Device,
const CFX_GraphStateData* pGraphState,
uint32_t fill_color,
uint32_t stroke_color,
int fill_mode,
int blend_type) {
uint8_t stroke_alpha = pGraphState ? FXARGB_A(stroke_color) : 0;
uint8_t fill_alpha = (fill_mode & 3) ? FXARGB_A(fill_color) : 0;
const std::vector<FX_PATHPOINT>& pPoints = pPathData->GetPoints();
if (stroke_alpha == 0 && pPoints.size() == 2) {
CFX_PointF pos1 = pPoints[0].m_Point;
CFX_PointF pos2 = pPoints[1].m_Point;
if (pObject2Device) {
pos1 = pObject2Device->Transform(pos1);
pos2 = pObject2Device->Transform(pos2);
}
DrawCosmeticLine(pos1.x, pos1.y, pos2.x, pos2.y, fill_color, fill_mode,
blend_type);
return true;
}
if ((pPoints.size() == 5 || pPoints.size() == 4) && stroke_alpha == 0) {
CFX_FloatRect rect_f;
if (!(fill_mode & FXFILL_RECT_AA) &&
pPathData->IsRect(pObject2Device, &rect_f)) {
FX_RECT rect_i = rect_f.GetOuterRect();
// Depending on the top/bottom, left/right values of the rect it's
// possible to overflow the Width() and Height() calculations. Check that
// the rect will have valid dimension before continuing.
if (!rect_i.Valid())
return false;
int width = static_cast<int>(ceil(rect_f.right - rect_f.left));
if (width < 1) {
width = 1;
if (rect_i.left == rect_i.right)
++rect_i.right;
}
int height = static_cast<int>(ceil(rect_f.top - rect_f.bottom));
if (height < 1) {
height = 1;
if (rect_i.bottom == rect_i.top)
++rect_i.bottom;
}
if (rect_i.Width() >= width + 1) {
if (rect_f.left - static_cast<float>(rect_i.left) >
static_cast<float>(rect_i.right) - rect_f.right) {
++rect_i.left;
} else {
--rect_i.right;
}
}
if (rect_i.Height() >= height + 1) {
if (rect_f.top - static_cast<float>(rect_i.top) >
static_cast<float>(rect_i.bottom) - rect_f.bottom) {
++rect_i.top;
} else {
--rect_i.bottom;
}
}
if (FillRectWithBlend(&rect_i, fill_color, blend_type))
return true;
}
}
if ((fill_mode & 3) && stroke_alpha == 0 && !(fill_mode & FX_FILL_STROKE) &&
!(fill_mode & FX_FILL_TEXT_MODE)) {
CFX_PathData newPath;
bool bThin = false;
bool setIdentity = false;
if (pPathData->GetZeroAreaPath(pObject2Device,
!!m_pDeviceDriver->GetDriverType(), &newPath,
&bThin, &setIdentity)) {
CFX_GraphStateData graphState;
graphState.m_LineWidth = 0.0f;
uint32_t strokecolor = fill_color;
if (bThin)
strokecolor = (((fill_alpha >> 2) << 24) | (strokecolor & 0x00ffffff));
const CFX_Matrix* pMatrix = nullptr;
if (pObject2Device && !pObject2Device->IsIdentity() && !setIdentity)
pMatrix = pObject2Device;
int smooth_path = FX_ZEROAREA_FILL;
if (fill_mode & FXFILL_NOPATHSMOOTH)
smooth_path |= FXFILL_NOPATHSMOOTH;
m_pDeviceDriver->DrawPath(&newPath, pMatrix, &graphState, 0, strokecolor,
smooth_path, blend_type);
}
}
if ((fill_mode & 3) && fill_alpha && stroke_alpha < 0xff &&
(fill_mode & FX_FILL_STROKE)) {
if (m_RenderCaps & FXRC_FILLSTROKE_PATH) {
return m_pDeviceDriver->DrawPath(pPathData, pObject2Device, pGraphState,
fill_color, stroke_color, fill_mode,
blend_type);
}
return DrawFillStrokePath(pPathData, pObject2Device, pGraphState,
fill_color, stroke_color, fill_mode, blend_type);
}
return m_pDeviceDriver->DrawPath(pPathData, pObject2Device, pGraphState,
fill_color, stroke_color, fill_mode,
blend_type);
}
// This can be removed once PDFium entirely relies on Skia
bool CFX_RenderDevice::DrawFillStrokePath(const CFX_PathData* pPathData,
const CFX_Matrix* pObject2Device,
const CFX_GraphStateData* pGraphState,
uint32_t fill_color,
uint32_t stroke_color,
int fill_mode,
int blend_type) {
if (!(m_RenderCaps & FXRC_GET_BITS))
return false;
CFX_FloatRect bbox;
if (pGraphState) {
bbox = pPathData->GetBoundingBox(pGraphState->m_LineWidth,
pGraphState->m_MiterLimit);
} else {
bbox = pPathData->GetBoundingBox();
}
if (pObject2Device)
pObject2Device->TransformRect(bbox);
CFX_Matrix ctm = GetCTM();
float fScaleX = fabs(ctm.a);
float fScaleY = fabs(ctm.d);
FX_RECT rect = bbox.GetOuterRect();
auto bitmap = pdfium::MakeRetain<CFX_DIBitmap>();
auto Backdrop = pdfium::MakeRetain<CFX_DIBitmap>();
if (!CreateCompatibleBitmap(bitmap, FXSYS_round(rect.Width() * fScaleX),
FXSYS_round(rect.Height() * fScaleY))) {
return false;
}
if (bitmap->HasAlpha()) {
bitmap->Clear(0);
Backdrop->Copy(bitmap);
} else {
if (!m_pDeviceDriver->GetDIBits(bitmap, rect.left, rect.top))
return false;
Backdrop->Copy(bitmap);
}
CFX_DefaultRenderDevice bitmap_device;
bitmap_device.Attach(bitmap, false, Backdrop, true);
CFX_Matrix matrix;
if (pObject2Device)
matrix = *pObject2Device;
matrix.Translate(-rect.left, -rect.top);
matrix.Concat(CFX_Matrix(fScaleX, 0, 0, fScaleY, 0, 0));
if (!bitmap_device.GetDeviceDriver()->DrawPath(
pPathData, &matrix, pGraphState, fill_color, stroke_color, fill_mode,
blend_type)) {
return false;
}
#if defined _SKIA_SUPPORT_ || defined _SKIA_SUPPORT_PATHS_
bitmap_device.GetDeviceDriver()->Flush();
#endif
FX_RECT src_rect(0, 0, FXSYS_round(rect.Width() * fScaleX),
FXSYS_round(rect.Height() * fScaleY));
return m_pDeviceDriver->SetDIBits(bitmap, 0, &src_rect, rect.left, rect.top,
FXDIB_BLEND_NORMAL);
}
bool CFX_RenderDevice::FillRectWithBlend(const FX_RECT* pRect,
uint32_t fill_color,
int blend_type) {
if (m_pDeviceDriver->FillRectWithBlend(pRect, fill_color, blend_type))
return true;
if (!(m_RenderCaps & FXRC_GET_BITS))
return false;
auto bitmap = pdfium::MakeRetain<CFX_DIBitmap>();
if (!CreateCompatibleBitmap(bitmap, pRect->Width(), pRect->Height()))
return false;
if (!m_pDeviceDriver->GetDIBits(bitmap, pRect->left, pRect->top))
return false;
if (!bitmap->CompositeRect(0, 0, pRect->Width(), pRect->Height(), fill_color,
0)) {
return false;
}
FX_RECT src_rect(0, 0, pRect->Width(), pRect->Height());
m_pDeviceDriver->SetDIBits(bitmap, 0, &src_rect, pRect->left, pRect->top,
FXDIB_BLEND_NORMAL);
return true;
}
bool CFX_RenderDevice::DrawCosmeticLine(float x1,
float y1,
float x2,
float y2,
uint32_t color,
int fill_mode,
int blend_type) {
if ((color >= 0xff000000) &&
m_pDeviceDriver->DrawCosmeticLine(x1, y1, x2, y2, color, blend_type)) {
return true;
}
CFX_GraphStateData graph_state;
CFX_PathData path;
path.AppendPoint(CFX_PointF(x1, y1), FXPT_TYPE::MoveTo, false);
path.AppendPoint(CFX_PointF(x2, y2), FXPT_TYPE::LineTo, false);
return m_pDeviceDriver->DrawPath(&path, nullptr, &graph_state, 0, color,
fill_mode, blend_type);
}
bool CFX_RenderDevice::GetDIBits(const CFX_RetainPtr<CFX_DIBitmap>& pBitmap,
int left,
int top) {
return (m_RenderCaps & FXRC_GET_BITS) &&
m_pDeviceDriver->GetDIBits(pBitmap, left, top);
}
CFX_RetainPtr<CFX_DIBitmap> CFX_RenderDevice::GetBackDrop() {
return m_pDeviceDriver->GetBackDrop();
}
bool CFX_RenderDevice::SetDIBitsWithBlend(
const CFX_RetainPtr<CFX_DIBSource>& pBitmap,
int left,
int top,
int blend_mode) {
ASSERT(!pBitmap->IsAlphaMask());
CFX_Matrix ctm = GetCTM();
float fScaleX = fabs(ctm.a);
float fScaleY = fabs(ctm.d);
FX_RECT dest_rect(left, top,
FXSYS_round(left + pBitmap->GetWidth() / fScaleX),
FXSYS_round(top + pBitmap->GetHeight() / fScaleY));
dest_rect.Intersect(m_ClipBox);
if (dest_rect.IsEmpty())
return true;
FX_RECT src_rect(dest_rect.left - left, dest_rect.top - top,
dest_rect.left - left + dest_rect.Width(),
dest_rect.top - top + dest_rect.Height());
src_rect.left = FXSYS_round(src_rect.left * fScaleX);
src_rect.top = FXSYS_round(src_rect.top * fScaleY);
src_rect.right = FXSYS_round(src_rect.right * fScaleX);
src_rect.bottom = FXSYS_round(src_rect.bottom * fScaleY);
if ((blend_mode == FXDIB_BLEND_NORMAL || (m_RenderCaps & FXRC_BLEND_MODE)) &&
(!pBitmap->HasAlpha() || (m_RenderCaps & FXRC_ALPHA_IMAGE))) {
return m_pDeviceDriver->SetDIBits(pBitmap, 0, &src_rect, dest_rect.left,
dest_rect.top, blend_mode);
}
if (!(m_RenderCaps & FXRC_GET_BITS))
return false;
int bg_pixel_width = FXSYS_round(dest_rect.Width() * fScaleX);
int bg_pixel_height = FXSYS_round(dest_rect.Height() * fScaleY);
auto background = pdfium::MakeRetain<CFX_DIBitmap>();
if (!background->Create(
bg_pixel_width, bg_pixel_height,
(m_RenderCaps & FXRC_CMYK_OUTPUT) ? FXDIB_Cmyk : FXDIB_Rgb32)) {
return false;
}
if (!m_pDeviceDriver->GetDIBits(background, dest_rect.left, dest_rect.top)) {
return false;
}
if (!background->CompositeBitmap(0, 0, bg_pixel_width, bg_pixel_height,
pBitmap, src_rect.left, src_rect.top,
blend_mode, nullptr, false)) {
return false;
}
FX_RECT rect(0, 0, bg_pixel_width, bg_pixel_height);
return m_pDeviceDriver->SetDIBits(background, 0, &rect, dest_rect.left,
dest_rect.top, FXDIB_BLEND_NORMAL);
}
bool CFX_RenderDevice::StretchDIBitsWithFlagsAndBlend(
const CFX_RetainPtr<CFX_DIBSource>& pBitmap,
int left,
int top,
int dest_width,
int dest_height,
uint32_t flags,
int blend_mode) {
FX_RECT dest_rect(left, top, left + dest_width, top + dest_height);
FX_RECT clip_box = m_ClipBox;
clip_box.Intersect(dest_rect);
return clip_box.IsEmpty() || m_pDeviceDriver->StretchDIBits(
pBitmap, 0, left, top, dest_width,
dest_height, &clip_box, flags, blend_mode);
}
bool CFX_RenderDevice::SetBitMask(const CFX_RetainPtr<CFX_DIBSource>& pBitmap,
int left,
int top,
uint32_t argb) {
FX_RECT src_rect(0, 0, pBitmap->GetWidth(), pBitmap->GetHeight());
return m_pDeviceDriver->SetDIBits(pBitmap, argb, &src_rect, left, top,
FXDIB_BLEND_NORMAL);
}
bool CFX_RenderDevice::StretchBitMask(
const CFX_RetainPtr<CFX_DIBSource>& pBitmap,
int left,
int top,
int dest_width,
int dest_height,
uint32_t color) {
return StretchBitMaskWithFlags(pBitmap, left, top, dest_width, dest_height,
color, 0);
}
bool CFX_RenderDevice::StretchBitMaskWithFlags(
const CFX_RetainPtr<CFX_DIBSource>& pBitmap,
int left,
int top,
int dest_width,
int dest_height,
uint32_t argb,
uint32_t flags) {
FX_RECT dest_rect(left, top, left + dest_width, top + dest_height);
FX_RECT clip_box = m_ClipBox;
clip_box.Intersect(dest_rect);
return m_pDeviceDriver->StretchDIBits(pBitmap, argb, left, top, dest_width,
dest_height, &clip_box, flags,
FXDIB_BLEND_NORMAL);
}
bool CFX_RenderDevice::StartDIBitsWithBlend(
const CFX_RetainPtr<CFX_DIBSource>& pBitmap,
int bitmap_alpha,
uint32_t argb,
const CFX_Matrix* pMatrix,
uint32_t flags,
std::unique_ptr<CFX_ImageRenderer>* handle,
int blend_mode) {
return m_pDeviceDriver->StartDIBits(pBitmap, bitmap_alpha, argb, pMatrix,
flags, handle, blend_mode);
}
bool CFX_RenderDevice::ContinueDIBits(CFX_ImageRenderer* handle,
IFX_Pause* pPause) {
return m_pDeviceDriver->ContinueDIBits(handle, pPause);
}
#ifdef _SKIA_SUPPORT_
void CFX_RenderDevice::DebugVerifyBitmapIsPreMultiplied() const {
SkASSERT(0);
}
bool CFX_RenderDevice::SetBitsWithMask(
const CFX_RetainPtr<CFX_DIBSource>& pBitmap,
const CFX_RetainPtr<CFX_DIBSource>& pMask,
int left,
int top,
int bitmap_alpha,
int blend_type) {
return m_pDeviceDriver->SetBitsWithMask(pBitmap, pMask, left, top,
bitmap_alpha, blend_type);
}
#endif
bool CFX_RenderDevice::DrawNormalText(int nChars,
const FXTEXT_CHARPOS* pCharPos,
CFX_Font* pFont,
float font_size,
const CFX_Matrix* pText2Device,
uint32_t fill_color,
uint32_t text_flags) {
int nativetext_flags = text_flags;
if (m_DeviceClass != FXDC_DISPLAY) {
if (!(text_flags & FXTEXT_PRINTGRAPHICTEXT)) {
if (ShouldDrawDeviceText(pFont, text_flags) &&
m_pDeviceDriver->DrawDeviceText(nChars, pCharPos, pFont, pText2Device,
font_size, fill_color)) {
return true;
}
}
if (FXARGB_A(fill_color) < 255)
return false;
} else if (!(text_flags & FXTEXT_NO_NATIVETEXT)) {
if (ShouldDrawDeviceText(pFont, text_flags) &&
m_pDeviceDriver->DrawDeviceText(nChars, pCharPos, pFont, pText2Device,
font_size, fill_color)) {
return true;
}
}
CFX_Matrix char2device;
CFX_Matrix text2Device;
if (pText2Device) {
char2device = *pText2Device;
text2Device = *pText2Device;
}
char2device.Scale(font_size, -font_size);
if (fabs(char2device.a) + fabs(char2device.b) > 50 * 1.0f ||
((m_DeviceClass == FXDC_PRINTER) &&
!(text_flags & FXTEXT_PRINTIMAGETEXT))) {
if (pFont->GetFace()) {
int nPathFlags =
(text_flags & FXTEXT_NOSMOOTH) == 0 ? 0 : FXFILL_NOPATHSMOOTH;
return DrawTextPath(nChars, pCharPos, pFont, font_size, pText2Device,
nullptr, nullptr, fill_color, 0, nullptr, nPathFlags);
}
}
int anti_alias = FXFT_RENDER_MODE_MONO;
bool bNormal = false;
if ((text_flags & FXTEXT_NOSMOOTH) == 0) {
if (m_DeviceClass == FXDC_DISPLAY && m_bpp > 1) {
if (!CFX_GEModule::Get()->GetFontMgr()->FTLibrarySupportsHinting()) {
// Some Freetype implementations (like the one packaged with Fedora) do
// not support hinting due to patents 6219025, 6239783, 6307566,
// 6225973, 6243070, 6393145, 6421054, 6282327, and 6624828; the latest
// one expires 10/7/19. This makes LCD antialiasing very ugly, so we
// instead fall back on NORMAL antialiasing.
anti_alias = FXFT_RENDER_MODE_NORMAL;
} else if ((m_RenderCaps & (FXRC_ALPHA_OUTPUT | FXRC_CMYK_OUTPUT))) {
anti_alias = FXFT_RENDER_MODE_LCD;
bNormal = true;
} else if (m_bpp < 16) {
anti_alias = FXFT_RENDER_MODE_NORMAL;
} else {
anti_alias = FXFT_RENDER_MODE_LCD;
bool bClearType = false;
if (pFont->GetFace())
bClearType = !!(text_flags & FXTEXT_CLEARTYPE);
bNormal = !bClearType;
}
}
}
std::vector<FXTEXT_GLYPHPOS> glyphs(nChars);
CFX_Matrix matrixCTM = GetCTM();
float scale_x = fabs(matrixCTM.a);
float scale_y = fabs(matrixCTM.d);
CFX_Matrix deviceCtm = char2device;
CFX_Matrix m(scale_x, 0, 0, scale_y, 0, 0);
deviceCtm.Concat(m);
text2Device.Concat(m);
for (size_t i = 0; i < glyphs.size(); ++i) {
FXTEXT_GLYPHPOS& glyph = glyphs[i];
const FXTEXT_CHARPOS& charpos = pCharPos[i];
glyph.m_fOrigin = text2Device.Transform(charpos.m_Origin);
if (anti_alias < FXFT_RENDER_MODE_LCD)
glyph.m_Origin.x = FXSYS_round(glyph.m_fOrigin.x);
else
glyph.m_Origin.x = static_cast<int>(floor(glyph.m_fOrigin.x));
glyph.m_Origin.y = FXSYS_round(glyph.m_fOrigin.y);
if (charpos.m_bGlyphAdjust) {
CFX_Matrix new_matrix(
charpos.m_AdjustMatrix[0], charpos.m_AdjustMatrix[1],
charpos.m_AdjustMatrix[2], charpos.m_AdjustMatrix[3], 0, 0);
new_matrix.Concat(deviceCtm);
glyph.m_pGlyph = pFont->LoadGlyphBitmap(
charpos.m_GlyphIndex, charpos.m_bFontStyle, &new_matrix,
charpos.m_FontCharWidth, anti_alias, nativetext_flags);
} else {
glyph.m_pGlyph = pFont->LoadGlyphBitmap(
charpos.m_GlyphIndex, charpos.m_bFontStyle, &deviceCtm,
charpos.m_FontCharWidth, anti_alias, nativetext_flags);
}
}
if (anti_alias < FXFT_RENDER_MODE_LCD && glyphs.size() > 1)
AdjustGlyphSpace(&glyphs);
FX_RECT bmp_rect1 = FXGE_GetGlyphsBBox(glyphs, anti_alias, 1.0f, 1.0f);
if (scale_x > 1 && scale_y > 1) {
--bmp_rect1.left;
--bmp_rect1.top;
++bmp_rect1.right;
++bmp_rect1.bottom;
}
FX_RECT bmp_rect(FXSYS_round((float)(bmp_rect1.left) / scale_x),
FXSYS_round((float)(bmp_rect1.top) / scale_y),
FXSYS_round((float)bmp_rect1.right / scale_x),
FXSYS_round((float)bmp_rect1.bottom / scale_y));
bmp_rect.Intersect(m_ClipBox);
if (bmp_rect.IsEmpty())
return true;
int pixel_width = FXSYS_round(bmp_rect.Width() * scale_x);
int pixel_height = FXSYS_round(bmp_rect.Height() * scale_y);
int pixel_left = FXSYS_round(bmp_rect.left * scale_x);
int pixel_top = FXSYS_round(bmp_rect.top * scale_y);
if (anti_alias == FXFT_RENDER_MODE_MONO) {
auto bitmap = pdfium::MakeRetain<CFX_DIBitmap>();
if (!bitmap->Create(pixel_width, pixel_height, FXDIB_1bppMask))
return false;
bitmap->Clear(0);
for (const FXTEXT_GLYPHPOS& glyph : glyphs) {
if (!glyph.m_pGlyph)
continue;
CFX_RetainPtr<CFX_DIBitmap> pGlyph = glyph.m_pGlyph->m_pBitmap;
bitmap->TransferBitmap(
glyph.m_Origin.x + glyph.m_pGlyph->m_Left - pixel_left,
glyph.m_Origin.y - glyph.m_pGlyph->m_Top - pixel_top,
pGlyph->GetWidth(), pGlyph->GetHeight(), pGlyph, 0, 0);
}
return SetBitMask(bitmap, bmp_rect.left, bmp_rect.top, fill_color);
}
auto bitmap = pdfium::MakeRetain<CFX_DIBitmap>();
if (m_bpp == 8) {
if (!bitmap->Create(pixel_width, pixel_height, FXDIB_8bppMask))
return false;
} else {
if (!CreateCompatibleBitmap(bitmap, pixel_width, pixel_height))
return false;
}
if (!bitmap->HasAlpha() && !bitmap->IsAlphaMask()) {
bitmap->Clear(0xFFFFFFFF);
if (!GetDIBits(bitmap, bmp_rect.left, bmp_rect.top))
return false;
} else {
bitmap->Clear(0);
if (bitmap->m_pAlphaMask)
bitmap->m_pAlphaMask->Clear(0);
}
int dest_width = pixel_width;
int a = 0;
int r = 0;
int g = 0;
int b = 0;
if (anti_alias == FXFT_RENDER_MODE_LCD)
std::tie(a, r, g, b) = ArgbDecode(fill_color);
for (const FXTEXT_GLYPHPOS& glyph : glyphs) {
if (!glyph.m_pGlyph)
continue;
pdfium::base::CheckedNumeric<int> left = glyph.m_Origin.x;
left += glyph.m_pGlyph->m_Left;
left -= pixel_left;
if (!left.IsValid())
return false;
pdfium::base::CheckedNumeric<int> top = glyph.m_Origin.y;
top -= glyph.m_pGlyph->m_Top;
top -= pixel_top;
if (!top.IsValid())
return false;
CFX_RetainPtr<CFX_DIBitmap> pGlyph = glyph.m_pGlyph->m_pBitmap;
int ncols = pGlyph->GetWidth();
int nrows = pGlyph->GetHeight();
if (anti_alias == FXFT_RENDER_MODE_NORMAL) {
if (!bitmap->CompositeMask(left.ValueOrDie(), top.ValueOrDie(), ncols,
nrows, pGlyph, fill_color, 0, 0,
FXDIB_BLEND_NORMAL, nullptr, false, 0)) {
return false;
}
continue;
}
bool bBGRStripe = !!(text_flags & FXTEXT_BGR_STRIPE);
ncols /= 3;
int x_subpixel = static_cast<int>(glyph.m_fOrigin.x * 3) % 3;
int start_col =
pdfium::base::ValueOrDieForType<int>(pdfium::base::CheckMax(left, 0));
pdfium::base::CheckedNumeric<int> end_col_safe = left;
end_col_safe += ncols;
if (!end_col_safe.IsValid())
return false;
int end_col =
std::min(static_cast<int>(end_col_safe.ValueOrDie<int>()), dest_width);
if (start_col >= end_col)
continue;
DrawNormalTextHelper(bitmap, pGlyph, nrows, left.ValueOrDie(),
top.ValueOrDie(), start_col, end_col, bNormal,
bBGRStripe, x_subpixel, a, r, g, b);
}
if (bitmap->IsAlphaMask())
SetBitMask(bitmap, bmp_rect.left, bmp_rect.top, fill_color);
else
SetDIBits(bitmap, bmp_rect.left, bmp_rect.top);
return true;
}
bool CFX_RenderDevice::DrawTextPath(int nChars,
const FXTEXT_CHARPOS* pCharPos,
CFX_Font* pFont,
float font_size,
const CFX_Matrix* pText2User,
const CFX_Matrix* pUser2Device,
const CFX_GraphStateData* pGraphState,
uint32_t fill_color,
FX_ARGB stroke_color,
CFX_PathData* pClippingPath,
int nFlag) {
for (int iChar = 0; iChar < nChars; ++iChar) {
const FXTEXT_CHARPOS& charpos = pCharPos[iChar];
CFX_Matrix matrix;
if (charpos.m_bGlyphAdjust) {
matrix = CFX_Matrix(charpos.m_AdjustMatrix[0], charpos.m_AdjustMatrix[1],
charpos.m_AdjustMatrix[2], charpos.m_AdjustMatrix[3],
0, 0);
}
matrix.Concat(CFX_Matrix(font_size, 0, 0, font_size, charpos.m_Origin.x,
charpos.m_Origin.y));
const CFX_PathData* pPath =
pFont->LoadGlyphPath(charpos.m_GlyphIndex, charpos.m_FontCharWidth);
if (!pPath)
continue;
matrix.Concat(*pText2User);
CFX_PathData TransformedPath(*pPath);
TransformedPath.Transform(&matrix);
if (fill_color || stroke_color) {
int fill_mode = nFlag;
if (fill_color)
fill_mode |= FXFILL_WINDING;
fill_mode |= FX_FILL_TEXT_MODE;
if (!DrawPathWithBlend(&TransformedPath, pUser2Device, pGraphState,
fill_color, stroke_color, fill_mode,
FXDIB_BLEND_NORMAL)) {
return false;
}
}
if (pClippingPath)
pClippingPath->Append(&TransformedPath, pUser2Device);
}
return true;
}
void CFX_RenderDevice::DrawFillRect(CFX_Matrix* pUser2Device,
const CFX_FloatRect& rect,
const FX_COLORREF& color) {
CFX_PathData path;
CFX_FloatRect rcTemp(rect);
path.AppendRect(rcTemp.left, rcTemp.bottom, rcTemp.right, rcTemp.top);
DrawPath(&path, pUser2Device, nullptr, color, 0, FXFILL_WINDING);
}
void CFX_RenderDevice::DrawFillArea(CFX_Matrix* pUser2Device,
const CFX_PointF* pPts,
int32_t nCount,
const FX_COLORREF& color) {
CFX_PathData path;
path.AppendPoint(pPts[0], FXPT_TYPE::MoveTo, false);
for (int32_t i = 1; i < nCount; i++)
path.AppendPoint(pPts[i], FXPT_TYPE::LineTo, false);
DrawPath(&path, pUser2Device, nullptr, color, 0, FXFILL_ALTERNATE);
}
void CFX_RenderDevice::DrawStrokeRect(CFX_Matrix* pUser2Device,
const CFX_FloatRect& rect,
const FX_COLORREF& color,
float fWidth) {
CFX_PathData path;
CFX_FloatRect rcTemp(rect);
path.AppendRect(rcTemp.left, rcTemp.bottom, rcTemp.right, rcTemp.top);
CFX_GraphStateData gsd;
gsd.m_LineWidth = fWidth;
DrawPath(&path, pUser2Device, &gsd, 0, color, FXFILL_ALTERNATE);
}
void CFX_RenderDevice::DrawStrokeLine(CFX_Matrix* pUser2Device,
const CFX_PointF& ptMoveTo,
const CFX_PointF& ptLineTo,
const FX_COLORREF& color,
float fWidth) {
CFX_PathData path;
path.AppendPoint(ptMoveTo, FXPT_TYPE::MoveTo, false);
path.AppendPoint(ptLineTo, FXPT_TYPE::LineTo, false);
CFX_GraphStateData gsd;
gsd.m_LineWidth = fWidth;
DrawPath(&path, pUser2Device, &gsd, 0, color, FXFILL_ALTERNATE);
}
void CFX_RenderDevice::DrawFillRect(CFX_Matrix* pUser2Device,
const CFX_FloatRect& rect,
const CFX_Color& color,
int32_t nTransparency) {
DrawFillRect(pUser2Device, rect, color.ToFXColor(nTransparency));
}
void CFX_RenderDevice::DrawShadow(CFX_Matrix* pUser2Device,
bool bVertical,
bool bHorizontal,
CFX_FloatRect rect,
int32_t nTransparency,
int32_t nStartGray,
int32_t nEndGray) {
float fStepGray = 1.0f;
if (bVertical) {
fStepGray = (nEndGray - nStartGray) / rect.Height();
for (float fy = rect.bottom + 0.5f; fy <= rect.top - 0.5f; fy += 1.0f) {
int32_t nGray = nStartGray + (int32_t)(fStepGray * (fy - rect.bottom));
DrawStrokeLine(pUser2Device, CFX_PointF(rect.left, fy),
CFX_PointF(rect.right, fy),
ArgbEncode(nTransparency, nGray, nGray, nGray), 1.5f);
}
}
if (bHorizontal) {
fStepGray = (nEndGray - nStartGray) / rect.Width();
for (float fx = rect.left + 0.5f; fx <= rect.right - 0.5f; fx += 1.0f) {
int32_t nGray = nStartGray + (int32_t)(fStepGray * (fx - rect.left));
DrawStrokeLine(pUser2Device, CFX_PointF(fx, rect.bottom),
CFX_PointF(fx, rect.top),
ArgbEncode(nTransparency, nGray, nGray, nGray), 1.5f);
}
}
}
void CFX_RenderDevice::DrawBorder(CFX_Matrix* pUser2Device,
const CFX_FloatRect& rect,
float fWidth,
const CFX_Color& color,
const CFX_Color& crLeftTop,
const CFX_Color& crRightBottom,
BorderStyle nStyle,
int32_t nTransparency) {
float fLeft = rect.left;
float fRight = rect.right;
float fTop = rect.top;
float fBottom = rect.bottom;
if (fWidth > 0.0f) {
float fHalfWidth = fWidth / 2.0f;
switch (nStyle) {
default:
case BorderStyle::SOLID: {
CFX_PathData path;
path.AppendRect(fLeft, fBottom, fRight, fTop);
path.AppendRect(fLeft + fWidth, fBottom + fWidth, fRight - fWidth,
fTop - fWidth);
DrawPath(&path, pUser2Device, nullptr, color.ToFXColor(nTransparency),
0, FXFILL_ALTERNATE);
break;
}
case BorderStyle::DASH: {
CFX_PathData path;
path.AppendPoint(
CFX_PointF(fLeft + fWidth / 2.0f, fBottom + fWidth / 2.0f),
FXPT_TYPE::MoveTo, false);
path.AppendPoint(
CFX_PointF(fLeft + fWidth / 2.0f, fTop - fWidth / 2.0f),
FXPT_TYPE::LineTo, false);
path.AppendPoint(
CFX_PointF(fRight - fWidth / 2.0f, fTop - fWidth / 2.0f),
FXPT_TYPE::LineTo, false);
path.AppendPoint(
CFX_PointF(fRight - fWidth / 2.0f, fBottom + fWidth / 2.0f),
FXPT_TYPE::LineTo, false);
path.AppendPoint(
CFX_PointF(fLeft + fWidth / 2.0f, fBottom + fWidth / 2.0f),
FXPT_TYPE::LineTo, false);
CFX_GraphStateData gsd;
gsd.SetDashCount(2);
gsd.m_DashArray[0] = 3.0f;
gsd.m_DashArray[1] = 3.0f;
gsd.m_DashPhase = 0;
gsd.m_LineWidth = fWidth;
DrawPath(&path, pUser2Device, &gsd, 0, color.ToFXColor(nTransparency),
FXFILL_WINDING);
break;
}
case BorderStyle::BEVELED:
case BorderStyle::INSET: {
CFX_GraphStateData gsd;
gsd.m_LineWidth = fHalfWidth;
CFX_PathData pathLT;
pathLT.AppendPoint(CFX_PointF(fLeft + fHalfWidth, fBottom + fHalfWidth),
FXPT_TYPE::MoveTo, false);
pathLT.AppendPoint(CFX_PointF(fLeft + fHalfWidth, fTop - fHalfWidth),
FXPT_TYPE::LineTo, false);
pathLT.AppendPoint(CFX_PointF(fRight - fHalfWidth, fTop - fHalfWidth),
FXPT_TYPE::LineTo, false);
pathLT.AppendPoint(
CFX_PointF(fRight - fHalfWidth * 2, fTop - fHalfWidth * 2),
FXPT_TYPE::LineTo, false);
pathLT.AppendPoint(
CFX_PointF(fLeft + fHalfWidth * 2, fTop - fHalfWidth * 2),
FXPT_TYPE::LineTo, false);
pathLT.AppendPoint(
CFX_PointF(fLeft + fHalfWidth * 2, fBottom + fHalfWidth * 2),
FXPT_TYPE::LineTo, false);
pathLT.AppendPoint(CFX_PointF(fLeft + fHalfWidth, fBottom + fHalfWidth),
FXPT_TYPE::LineTo, false);
DrawPath(&pathLT, pUser2Device, &gsd,
crLeftTop.ToFXColor(nTransparency), 0, FXFILL_ALTERNATE);
CFX_PathData pathRB;
pathRB.AppendPoint(CFX_PointF(fRight - fHalfWidth, fTop - fHalfWidth),
FXPT_TYPE::MoveTo, false);
pathRB.AppendPoint(
CFX_PointF(fRight - fHalfWidth, fBottom + fHalfWidth),
FXPT_TYPE::LineTo, false);
pathRB.AppendPoint(CFX_PointF(fLeft + fHalfWidth, fBottom + fHalfWidth),
FXPT_TYPE::LineTo, false);
pathRB.AppendPoint(
CFX_PointF(fLeft + fHalfWidth * 2, fBottom + fHalfWidth * 2),
FXPT_TYPE::LineTo, false);
pathRB.AppendPoint(
CFX_PointF(fRight - fHalfWidth * 2, fBottom + fHalfWidth * 2),
FXPT_TYPE::LineTo, false);
pathRB.AppendPoint(
CFX_PointF(fRight - fHalfWidth * 2, fTop - fHalfWidth * 2),
FXPT_TYPE::LineTo, false);
pathRB.AppendPoint(CFX_PointF(fRight - fHalfWidth, fTop - fHalfWidth),
FXPT_TYPE::LineTo, false);
DrawPath(&pathRB, pUser2Device, &gsd,
crRightBottom.ToFXColor(nTransparency), 0, FXFILL_ALTERNATE);
CFX_PathData path;
path.AppendRect(fLeft, fBottom, fRight, fTop);
path.AppendRect(fLeft + fHalfWidth, fBottom + fHalfWidth,
fRight - fHalfWidth, fTop - fHalfWidth);
DrawPath(&path, pUser2Device, &gsd, color.ToFXColor(nTransparency), 0,
FXFILL_ALTERNATE);
break;
}
case BorderStyle::UNDERLINE: {
CFX_PathData path;
path.AppendPoint(CFX_PointF(fLeft, fBottom + fWidth / 2),
FXPT_TYPE::MoveTo, false);
path.AppendPoint(CFX_PointF(fRight, fBottom + fWidth / 2),
FXPT_TYPE::LineTo, false);
CFX_GraphStateData gsd;
gsd.m_LineWidth = fWidth;
DrawPath(&path, pUser2Device, &gsd, 0, color.ToFXColor(nTransparency),
FXFILL_ALTERNATE);
break;
}
}
}
}
CFX_RenderDevice::StateRestorer::StateRestorer(CFX_RenderDevice* pDevice)
: m_pDevice(pDevice) {
m_pDevice->SaveState();
}
CFX_RenderDevice::StateRestorer::~StateRestorer() {
m_pDevice->RestoreState(false);
}