blob: f5bf76a80ccb266fbe94731d5cccbb60429a8a44 [file] [log] [blame]
// 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 "core/fxge/agg/fx_agg_driver.h"
#include <algorithm>
#include "core/fxcodec/include/fx_codec.h"
#include "core/fxcrt/include/fx_memory.h"
#include "core/fxge/dib/dib_int.h"
#include "core/fxge/ge/fx_text_int.h"
#include "core/fxge/include/cfx_gemodule.h"
#include "core/fxge/include/fx_ge.h"
#include "core/fxge/include/ifx_renderdevicedriver.h"
#include "third_party/agg23/agg_conv_dash.h"
#include "third_party/agg23/agg_conv_stroke.h"
#include "third_party/agg23/agg_curves.h"
#include "third_party/agg23/agg_path_storage.h"
#include "third_party/agg23/agg_pixfmt_gray.h"
#include "third_party/agg23/agg_rasterizer_scanline_aa.h"
#include "third_party/agg23/agg_renderer_scanline.h"
#include "third_party/agg23/agg_scanline_u.h"
namespace {
void HardClip(FX_FLOAT& x, FX_FLOAT& y) {
x = std::max(std::min(x, 50000.0f), -50000.0f);
y = std::max(std::min(y, 50000.0f), -50000.0f);
}
void RgbByteOrderSetPixel(CFX_DIBitmap* pBitmap, int x, int y, uint32_t argb) {
if (x < 0 || x >= pBitmap->GetWidth() || y < 0 || y >= pBitmap->GetHeight())
return;
uint8_t* pos = (uint8_t*)pBitmap->GetBuffer() + y * pBitmap->GetPitch() +
x * pBitmap->GetBPP() / 8;
if (pBitmap->GetFormat() == FXDIB_Argb) {
FXARGB_SETRGBORDERDIB(pos, argb);
return;
}
int alpha = FXARGB_A(argb);
pos[0] = (FXARGB_R(argb) * alpha + pos[0] * (255 - alpha)) / 255;
pos[1] = (FXARGB_G(argb) * alpha + pos[1] * (255 - alpha)) / 255;
pos[2] = (FXARGB_B(argb) * alpha + pos[2] * (255 - alpha)) / 255;
}
void RgbByteOrderCompositeRect(CFX_DIBitmap* pBitmap,
int left,
int top,
int width,
int height,
FX_ARGB argb) {
int src_alpha = FXARGB_A(argb);
if (src_alpha == 0)
return;
FX_RECT rect(left, top, left + width, top + height);
rect.Intersect(0, 0, pBitmap->GetWidth(), pBitmap->GetHeight());
width = rect.Width();
int src_r = FXARGB_R(argb);
int src_g = FXARGB_G(argb);
int src_b = FXARGB_B(argb);
int Bpp = pBitmap->GetBPP() / 8;
FX_BOOL bAlpha = pBitmap->HasAlpha();
int dib_argb = FXARGB_TOBGRORDERDIB(argb);
uint8_t* pBuffer = pBitmap->GetBuffer();
if (src_alpha == 255) {
for (int row = rect.top; row < rect.bottom; row++) {
uint8_t* dest_scan =
pBuffer + row * pBitmap->GetPitch() + rect.left * Bpp;
if (Bpp == 4) {
uint32_t* scan = (uint32_t*)dest_scan;
for (int col = 0; col < width; col++)
*scan++ = dib_argb;
} else {
for (int col = 0; col < width; col++) {
*dest_scan++ = src_r;
*dest_scan++ = src_g;
*dest_scan++ = src_b;
}
}
}
return;
}
for (int row = rect.top; row < rect.bottom; row++) {
uint8_t* dest_scan = pBuffer + row * pBitmap->GetPitch() + rect.left * Bpp;
if (bAlpha) {
for (int col = 0; col < width; col++) {
uint8_t back_alpha = dest_scan[3];
if (back_alpha == 0) {
FXARGB_SETRGBORDERDIB(dest_scan,
FXARGB_MAKE(src_alpha, src_r, src_g, src_b));
dest_scan += 4;
continue;
}
uint8_t dest_alpha =
back_alpha + src_alpha - back_alpha * src_alpha / 255;
dest_scan[3] = dest_alpha;
int alpha_ratio = src_alpha * 255 / dest_alpha;
*dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, src_r, alpha_ratio);
dest_scan++;
*dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, src_g, alpha_ratio);
dest_scan++;
*dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, src_b, alpha_ratio);
dest_scan += 2;
}
} else {
for (int col = 0; col < width; col++) {
*dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, src_r, src_alpha);
dest_scan++;
*dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, src_g, src_alpha);
dest_scan++;
*dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, src_b, src_alpha);
dest_scan++;
if (Bpp == 4)
dest_scan++;
}
}
}
}
void RgbByteOrderTransferBitmap(CFX_DIBitmap* pBitmap,
int dest_left,
int dest_top,
int width,
int height,
const CFX_DIBSource* pSrcBitmap,
int src_left,
int src_top) {
if (!pBitmap)
return;
pBitmap->GetOverlapRect(dest_left, dest_top, width, height,
pSrcBitmap->GetWidth(), pSrcBitmap->GetHeight(),
src_left, src_top, nullptr);
if (width == 0 || height == 0)
return;
int Bpp = pBitmap->GetBPP() / 8;
FXDIB_Format dest_format = pBitmap->GetFormat();
FXDIB_Format src_format = pSrcBitmap->GetFormat();
int pitch = pBitmap->GetPitch();
uint8_t* buffer = pBitmap->GetBuffer();
if (dest_format == src_format) {
for (int row = 0; row < height; row++) {
uint8_t* dest_scan = buffer + (dest_top + row) * pitch + dest_left * Bpp;
uint8_t* src_scan =
(uint8_t*)pSrcBitmap->GetScanline(src_top + row) + src_left * Bpp;
if (Bpp == 4) {
for (int col = 0; col < width; col++) {
FXARGB_SETDIB(dest_scan, FXARGB_MAKE(src_scan[3], src_scan[0],
src_scan[1], src_scan[2]));
dest_scan += 4;
src_scan += 4;
}
} else {
for (int col = 0; col < width; col++) {
*dest_scan++ = src_scan[2];
*dest_scan++ = src_scan[1];
*dest_scan++ = src_scan[0];
src_scan += 3;
}
}
}
return;
}
uint8_t* dest_buf = buffer + dest_top * pitch + dest_left * Bpp;
if (dest_format == FXDIB_Rgb) {
if (src_format == FXDIB_Rgb32) {
for (int row = 0; row < height; row++) {
uint8_t* dest_scan = dest_buf + row * pitch;
uint8_t* src_scan =
(uint8_t*)pSrcBitmap->GetScanline(src_top + row) + src_left * 4;
for (int col = 0; col < width; col++) {
*dest_scan++ = src_scan[2];
*dest_scan++ = src_scan[1];
*dest_scan++ = src_scan[0];
src_scan += 4;
}
}
} else {
ASSERT(FALSE);
}
return;
}
if (dest_format == FXDIB_Argb || dest_format == FXDIB_Rgb32) {
if (src_format == FXDIB_Rgb) {
for (int row = 0; row < height; row++) {
uint8_t* dest_scan = (uint8_t*)(dest_buf + row * pitch);
uint8_t* src_scan =
(uint8_t*)pSrcBitmap->GetScanline(src_top + row) + src_left * 3;
for (int col = 0; col < width; col++) {
FXARGB_SETDIB(dest_scan, FXARGB_MAKE(0xff, src_scan[0], src_scan[1],
src_scan[2]));
dest_scan += 4;
src_scan += 3;
}
}
} else if (src_format == FXDIB_Rgb32) {
ASSERT(dest_format == FXDIB_Argb);
for (int row = 0; row < height; row++) {
uint8_t* dest_scan = dest_buf + row * pitch;
uint8_t* src_scan =
(uint8_t*)(pSrcBitmap->GetScanline(src_top + row) + src_left * 4);
for (int col = 0; col < width; col++) {
FXARGB_SETDIB(dest_scan, FXARGB_MAKE(0xff, src_scan[0], src_scan[1],
src_scan[2]));
src_scan += 4;
dest_scan += 4;
}
}
}
return;
}
ASSERT(FALSE);
}
FX_ARGB DefaultCMYK2ARGB(FX_CMYK cmyk, uint8_t alpha) {
uint8_t r, g, b;
AdobeCMYK_to_sRGB1(FXSYS_GetCValue(cmyk), FXSYS_GetMValue(cmyk),
FXSYS_GetYValue(cmyk), FXSYS_GetKValue(cmyk), r, g, b);
return ArgbEncode(alpha, r, g, b);
}
FX_BOOL DibSetPixel(CFX_DIBitmap* pDevice,
int x,
int y,
uint32_t color,
int alpha_flag,
void* pIccTransform) {
FX_BOOL bObjCMYK = FXGETFLAG_COLORTYPE(alpha_flag);
int alpha = bObjCMYK ? FXGETFLAG_ALPHA_FILL(alpha_flag) : FXARGB_A(color);
if (pIccTransform) {
CCodec_IccModule* pIccModule =
CFX_GEModule::Get()->GetCodecModule()->GetIccModule();
color = bObjCMYK ? FXCMYK_TODIB(color) : FXARGB_TODIB(color);
pIccModule->TranslateScanline(pIccTransform, (uint8_t*)&color,
(uint8_t*)&color, 1);
color = bObjCMYK ? FXCMYK_TODIB(color) : FXARGB_TODIB(color);
if (!pDevice->IsCmykImage()) {
color = (color & 0xffffff) | (alpha << 24);
}
} else {
if (pDevice->IsCmykImage()) {
if (!bObjCMYK)
return FALSE;
} else {
if (bObjCMYK)
color = DefaultCMYK2ARGB(color, alpha);
}
}
pDevice->SetPixel(x, y, color);
if (pDevice->m_pAlphaMask) {
pDevice->m_pAlphaMask->SetPixel(x, y, alpha << 24);
}
return TRUE;
}
} // namespace
void CAgg_PathData::BuildPath(const CFX_PathData* pPathData,
const CFX_Matrix* pObject2Device) {
int nPoints = pPathData->GetPointCount();
FX_PATHPOINT* pPoints = pPathData->GetPoints();
for (int i = 0; i < nPoints; i++) {
FX_FLOAT x = pPoints[i].m_PointX, y = pPoints[i].m_PointY;
if (pObject2Device) {
pObject2Device->Transform(x, y);
}
HardClip(x, y);
int point_type = pPoints[i].m_Flag & FXPT_TYPE;
if (point_type == FXPT_MOVETO) {
m_PathData.move_to(x, y);
} else if (point_type == FXPT_LINETO) {
if (pPoints[i - 1].m_Flag == FXPT_MOVETO &&
(i == nPoints - 1 || pPoints[i + 1].m_Flag == FXPT_MOVETO) &&
pPoints[i].m_PointX == pPoints[i - 1].m_PointX &&
pPoints[i].m_PointY == pPoints[i - 1].m_PointY) {
x += 1;
}
m_PathData.line_to(x, y);
} else if (point_type == FXPT_BEZIERTO) {
FX_FLOAT x0 = pPoints[i - 1].m_PointX, y0 = pPoints[i - 1].m_PointY;
FX_FLOAT x2 = pPoints[i + 1].m_PointX, y2 = pPoints[i + 1].m_PointY;
FX_FLOAT x3 = pPoints[i + 2].m_PointX, y3 = pPoints[i + 2].m_PointY;
if (pObject2Device) {
pObject2Device->Transform(x0, y0);
pObject2Device->Transform(x2, y2);
pObject2Device->Transform(x3, y3);
}
agg::curve4 curve(x0, y0, x, y, x2, y2, x3, y3);
i += 2;
m_PathData.add_path_curve(curve);
}
if (pPoints[i].m_Flag & FXPT_CLOSEFIGURE) {
m_PathData.end_poly();
}
}
}
namespace agg {
template <class BaseRenderer>
class renderer_scanline_aa_offset {
public:
typedef BaseRenderer base_ren_type;
typedef typename base_ren_type::color_type color_type;
renderer_scanline_aa_offset(base_ren_type& ren, unsigned left, unsigned top)
: m_ren(&ren), m_left(left), m_top(top) {}
void color(const color_type& c) { m_color = c; }
const color_type& color() const { return m_color; }
void prepare(unsigned) {}
template <class Scanline>
void render(const Scanline& sl) {
int y = sl.y();
unsigned num_spans = sl.num_spans();
typename Scanline::const_iterator span = sl.begin();
for (;;) {
int x = span->x;
if (span->len > 0) {
m_ren->blend_solid_hspan(x - m_left, y - m_top, (unsigned)span->len,
m_color, span->covers);
} else {
m_ren->blend_hline(x - m_left, y - m_top, (unsigned)(x - span->len - 1),
m_color, *(span->covers));
}
if (--num_spans == 0) {
break;
}
++span;
}
}
private:
base_ren_type* m_ren;
color_type m_color;
unsigned m_left, m_top;
};
} // namespace agg
static void RasterizeStroke(agg::rasterizer_scanline_aa& rasterizer,
agg::path_storage& path_data,
const CFX_Matrix* pObject2Device,
const CFX_GraphStateData* pGraphState,
FX_FLOAT scale = 1.0f,
FX_BOOL bStrokeAdjust = FALSE,
FX_BOOL bTextMode = FALSE) {
agg::line_cap_e cap;
switch (pGraphState->m_LineCap) {
case CFX_GraphStateData::LineCapRound:
cap = agg::round_cap;
break;
case CFX_GraphStateData::LineCapSquare:
cap = agg::square_cap;
break;
default:
cap = agg::butt_cap;
break;
}
agg::line_join_e join;
switch (pGraphState->m_LineJoin) {
case CFX_GraphStateData::LineJoinRound:
join = agg::round_join;
break;
case CFX_GraphStateData::LineJoinBevel:
join = agg::bevel_join;
break;
default:
join = agg::miter_join_revert;
break;
}
FX_FLOAT width = pGraphState->m_LineWidth * scale;
FX_FLOAT unit = 1.f;
if (pObject2Device) {
unit =
1.0f / ((pObject2Device->GetXUnit() + pObject2Device->GetYUnit()) / 2);
}
if (width < unit) {
width = unit;
}
if (pGraphState->m_DashArray) {
typedef agg::conv_dash<agg::path_storage> dash_converter;
dash_converter dash(path_data);
for (int i = 0; i < (pGraphState->m_DashCount + 1) / 2; i++) {
FX_FLOAT on = pGraphState->m_DashArray[i * 2];
if (on <= 0.000001f) {
on = 1.0f / 10;
}
FX_FLOAT off = i * 2 + 1 == pGraphState->m_DashCount
? on
: pGraphState->m_DashArray[i * 2 + 1];
if (off < 0) {
off = 0;
}
dash.add_dash(on * scale, off * scale);
}
dash.dash_start(pGraphState->m_DashPhase * scale);
typedef agg::conv_stroke<dash_converter> dash_stroke;
dash_stroke stroke(dash);
stroke.line_join(join);
stroke.line_cap(cap);
stroke.miter_limit(pGraphState->m_MiterLimit);
stroke.width(width);
rasterizer.add_path_transformed(stroke, pObject2Device);
} else {
agg::conv_stroke<agg::path_storage> stroke(path_data);
stroke.line_join(join);
stroke.line_cap(cap);
stroke.miter_limit(pGraphState->m_MiterLimit);
stroke.width(width);
rasterizer.add_path_transformed(stroke, pObject2Device);
}
}
CFX_AggDeviceDriver::CFX_AggDeviceDriver(CFX_DIBitmap* pBitmap,
FX_BOOL bRgbByteOrder,
CFX_DIBitmap* pOriDevice,
FX_BOOL bGroupKnockout)
: m_pBitmap(pBitmap),
#if _FXM_PLATFORM_ == _FXM_PLATFORM_APPLE_
m_pPlatformGraphics(nullptr),
#endif
m_FillFlags(0),
m_bRgbByteOrder(bRgbByteOrder),
m_pOriDevice(pOriDevice),
m_bGroupKnockout(bGroupKnockout) {
InitPlatform();
}
CFX_AggDeviceDriver::~CFX_AggDeviceDriver() {
DestroyPlatform();
}
uint8_t* CFX_AggDeviceDriver::GetBuffer() const {
return m_pBitmap->GetBuffer();
}
const CFX_DIBitmap* CFX_AggDeviceDriver::GetBitmap() const {
return m_pBitmap;
}
#if _FXM_PLATFORM_ != _FXM_PLATFORM_APPLE_
void CFX_AggDeviceDriver::InitPlatform() {}
void CFX_AggDeviceDriver::DestroyPlatform() {}
FX_BOOL CFX_AggDeviceDriver::DrawDeviceText(int nChars,
const FXTEXT_CHARPOS* pCharPos,
CFX_Font* pFont,
CFX_FontCache* pCache,
const CFX_Matrix* pObject2Device,
FX_FLOAT font_size,
uint32_t color) {
return FALSE;
}
#endif // _FXM_PLATFORM_ != _FXM_PLATFORM_APPLE_
int CFX_AggDeviceDriver::GetDeviceCaps(int caps_id) const {
switch (caps_id) {
case FXDC_DEVICE_CLASS:
return FXDC_DISPLAY;
case FXDC_PIXEL_WIDTH:
return m_pBitmap->GetWidth();
case FXDC_PIXEL_HEIGHT:
return m_pBitmap->GetHeight();
case FXDC_BITS_PIXEL:
return m_pBitmap->GetBPP();
case FXDC_HORZ_SIZE:
case FXDC_VERT_SIZE:
return 0;
case FXDC_RENDER_CAPS: {
int flags = FXRC_GET_BITS | FXRC_ALPHA_PATH | FXRC_ALPHA_IMAGE |
FXRC_BLEND_MODE | FXRC_SOFT_CLIP;
if (m_pBitmap->HasAlpha()) {
flags |= FXRC_ALPHA_OUTPUT;
} else if (m_pBitmap->IsAlphaMask()) {
if (m_pBitmap->GetBPP() == 1) {
flags |= FXRC_BITMASK_OUTPUT;
} else {
flags |= FXRC_BYTEMASK_OUTPUT;
}
}
if (m_pBitmap->IsCmykImage()) {
flags |= FXRC_CMYK_OUTPUT;
}
return flags;
}
}
return 0;
}
void CFX_AggDeviceDriver::SaveState() {
std::unique_ptr<CFX_ClipRgn> pClip;
if (m_pClipRgn)
pClip.reset(new CFX_ClipRgn(*m_pClipRgn));
m_StateStack.push_back(std::move(pClip));
}
void CFX_AggDeviceDriver::RestoreState(bool bKeepSaved) {
m_pClipRgn.reset();
if (m_StateStack.empty())
return;
if (bKeepSaved) {
if (m_StateStack.back())
m_pClipRgn.reset(new CFX_ClipRgn(*m_StateStack.back()));
} else {
m_pClipRgn = std::move(m_StateStack.back());
m_StateStack.pop_back();
}
}
void CFX_AggDeviceDriver::SetClipMask(agg::rasterizer_scanline_aa& rasterizer) {
FX_RECT path_rect(rasterizer.min_x(), rasterizer.min_y(),
rasterizer.max_x() + 1, rasterizer.max_y() + 1);
path_rect.Intersect(m_pClipRgn->GetBox());
CFX_DIBitmapRef mask;
CFX_DIBitmap* pThisLayer = mask.New();
if (!pThisLayer) {
return;
}
pThisLayer->Create(path_rect.Width(), path_rect.Height(), FXDIB_8bppMask);
pThisLayer->Clear(0);
agg::rendering_buffer raw_buf(pThisLayer->GetBuffer(), pThisLayer->GetWidth(),
pThisLayer->GetHeight(),
pThisLayer->GetPitch());
agg::pixfmt_gray8 pixel_buf(raw_buf);
agg::renderer_base<agg::pixfmt_gray8> base_buf(pixel_buf);
agg::renderer_scanline_aa_offset<agg::renderer_base<agg::pixfmt_gray8> >
final_render(base_buf, path_rect.left, path_rect.top);
final_render.color(agg::gray8(255));
agg::scanline_u8 scanline;
agg::render_scanlines(rasterizer, scanline, final_render,
(m_FillFlags & FXFILL_NOPATHSMOOTH) != 0);
m_pClipRgn->IntersectMaskF(path_rect.left, path_rect.top, mask);
}
FX_BOOL CFX_AggDeviceDriver::SetClip_PathFill(const CFX_PathData* pPathData,
const CFX_Matrix* pObject2Device,
int fill_mode) {
m_FillFlags = fill_mode;
if (!m_pClipRgn) {
m_pClipRgn.reset(new CFX_ClipRgn(GetDeviceCaps(FXDC_PIXEL_WIDTH),
GetDeviceCaps(FXDC_PIXEL_HEIGHT)));
}
if (pPathData->GetPointCount() == 5 || pPathData->GetPointCount() == 4) {
CFX_FloatRect rectf;
if (pPathData->IsRect(pObject2Device, &rectf)) {
rectf.Intersect(
CFX_FloatRect(0, 0, (FX_FLOAT)GetDeviceCaps(FXDC_PIXEL_WIDTH),
(FX_FLOAT)GetDeviceCaps(FXDC_PIXEL_HEIGHT)));
FX_RECT rect = rectf.GetOutterRect();
m_pClipRgn->IntersectRect(rect);
return TRUE;
}
}
CAgg_PathData path_data;
path_data.BuildPath(pPathData, pObject2Device);
path_data.m_PathData.end_poly();
agg::rasterizer_scanline_aa rasterizer;
rasterizer.clip_box(0.0f, 0.0f, (FX_FLOAT)(GetDeviceCaps(FXDC_PIXEL_WIDTH)),
(FX_FLOAT)(GetDeviceCaps(FXDC_PIXEL_HEIGHT)));
rasterizer.add_path(path_data.m_PathData);
rasterizer.filling_rule((fill_mode & 3) == FXFILL_WINDING
? agg::fill_non_zero
: agg::fill_even_odd);
SetClipMask(rasterizer);
return TRUE;
}
FX_BOOL CFX_AggDeviceDriver::SetClip_PathStroke(
const CFX_PathData* pPathData,
const CFX_Matrix* pObject2Device,
const CFX_GraphStateData* pGraphState) {
if (!m_pClipRgn) {
m_pClipRgn.reset(new CFX_ClipRgn(GetDeviceCaps(FXDC_PIXEL_WIDTH),
GetDeviceCaps(FXDC_PIXEL_HEIGHT)));
}
CAgg_PathData path_data;
path_data.BuildPath(pPathData, nullptr);
agg::rasterizer_scanline_aa rasterizer;
rasterizer.clip_box(0.0f, 0.0f, (FX_FLOAT)(GetDeviceCaps(FXDC_PIXEL_WIDTH)),
(FX_FLOAT)(GetDeviceCaps(FXDC_PIXEL_HEIGHT)));
RasterizeStroke(rasterizer, path_data.m_PathData, pObject2Device,
pGraphState);
rasterizer.filling_rule(agg::fill_non_zero);
SetClipMask(rasterizer);
return TRUE;
}
class CFX_Renderer {
private:
int m_Alpha, m_Red, m_Green, m_Blue, m_Gray;
uint32_t m_Color;
FX_BOOL m_bFullCover;
FX_BOOL m_bRgbByteOrder;
CFX_DIBitmap* m_pOriDevice;
FX_RECT m_ClipBox;
const CFX_DIBitmap* m_pClipMask;
CFX_DIBitmap* m_pDevice;
const CFX_ClipRgn* m_pClipRgn;
void (CFX_Renderer::*composite_span)(uint8_t*,
int,
int,
int,
uint8_t*,
int,
int,
uint8_t*,
uint8_t*);
public:
void prepare(unsigned) {}
void CompositeSpan(uint8_t* dest_scan,
uint8_t* ori_scan,
int Bpp,
FX_BOOL bDestAlpha,
int span_left,
int span_len,
uint8_t* cover_scan,
int clip_left,
int clip_right,
uint8_t* clip_scan) {
ASSERT(!m_pDevice->IsCmykImage());
int col_start = span_left < clip_left ? clip_left - span_left : 0;
int col_end = (span_left + span_len) < clip_right
? span_len
: (clip_right - span_left);
if (Bpp) {
dest_scan += col_start * Bpp;
ori_scan += col_start * Bpp;
} else {
dest_scan += col_start / 8;
ori_scan += col_start / 8;
}
if (m_bRgbByteOrder) {
if (Bpp == 4 && bDestAlpha) {
for (int col = col_start; col < col_end; col++) {
int src_alpha;
if (clip_scan) {
src_alpha = m_Alpha * clip_scan[col] / 255;
} else {
src_alpha = m_Alpha;
}
uint8_t dest_alpha =
ori_scan[3] + src_alpha - ori_scan[3] * src_alpha / 255;
dest_scan[3] = dest_alpha;
int alpha_ratio = src_alpha * 255 / dest_alpha;
if (m_bFullCover) {
*dest_scan++ = FXDIB_ALPHA_MERGE(*ori_scan++, m_Red, alpha_ratio);
*dest_scan++ = FXDIB_ALPHA_MERGE(*ori_scan++, m_Green, alpha_ratio);
*dest_scan++ = FXDIB_ALPHA_MERGE(*ori_scan++, m_Blue, alpha_ratio);
dest_scan++;
ori_scan++;
} else {
int r = FXDIB_ALPHA_MERGE(*ori_scan++, m_Red, alpha_ratio);
int g = FXDIB_ALPHA_MERGE(*ori_scan++, m_Green, alpha_ratio);
int b = FXDIB_ALPHA_MERGE(*ori_scan++, m_Blue, alpha_ratio);
ori_scan++;
*dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, r, cover_scan[col]);
dest_scan++;
*dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, g, cover_scan[col]);
dest_scan++;
*dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, b, cover_scan[col]);
dest_scan += 2;
}
}
return;
}
if (Bpp == 3 || Bpp == 4) {
for (int col = col_start; col < col_end; col++) {
int src_alpha;
if (clip_scan) {
src_alpha = m_Alpha * clip_scan[col] / 255;
} else {
src_alpha = m_Alpha;
}
int r = FXDIB_ALPHA_MERGE(*ori_scan++, m_Red, src_alpha);
int g = FXDIB_ALPHA_MERGE(*ori_scan++, m_Green, src_alpha);
int b = FXDIB_ALPHA_MERGE(*ori_scan, m_Blue, src_alpha);
ori_scan += Bpp - 2;
*dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, r, cover_scan[col]);
dest_scan++;
*dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, g, cover_scan[col]);
dest_scan++;
*dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, b, cover_scan[col]);
dest_scan += Bpp - 2;
}
}
return;
}
if (Bpp == 4 && bDestAlpha) {
for (int col = col_start; col < col_end; col++) {
int src_alpha;
if (clip_scan) {
src_alpha = m_Alpha * clip_scan[col] / 255;
} else {
src_alpha = m_Alpha;
}
int src_alpha_covered = src_alpha * cover_scan[col] / 255;
if (src_alpha_covered == 0) {
dest_scan += 4;
continue;
}
if (cover_scan[col] == 255) {
dest_scan[3] = src_alpha_covered;
*dest_scan++ = m_Blue;
*dest_scan++ = m_Green;
*dest_scan = m_Red;
dest_scan += 2;
continue;
} else {
if (dest_scan[3] == 0) {
dest_scan[3] = src_alpha_covered;
*dest_scan++ = m_Blue;
*dest_scan++ = m_Green;
*dest_scan = m_Red;
dest_scan += 2;
continue;
}
uint8_t cover = cover_scan[col];
dest_scan[3] = FXDIB_ALPHA_MERGE(dest_scan[3], src_alpha, cover);
*dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, m_Blue, cover);
dest_scan++;
*dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, m_Green, cover);
dest_scan++;
*dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, m_Red, cover);
dest_scan += 2;
}
}
return;
}
if (Bpp == 3 || Bpp == 4) {
for (int col = col_start; col < col_end; col++) {
int src_alpha;
if (clip_scan) {
src_alpha = m_Alpha * clip_scan[col] / 255;
} else {
src_alpha = m_Alpha;
}
if (m_bFullCover) {
*dest_scan++ = FXDIB_ALPHA_MERGE(*ori_scan++, m_Blue, src_alpha);
*dest_scan++ = FXDIB_ALPHA_MERGE(*ori_scan++, m_Green, src_alpha);
*dest_scan = FXDIB_ALPHA_MERGE(*ori_scan, m_Red, src_alpha);
dest_scan += Bpp - 2;
ori_scan += Bpp - 2;
continue;
}
int b = FXDIB_ALPHA_MERGE(*ori_scan++, m_Blue, src_alpha);
int g = FXDIB_ALPHA_MERGE(*ori_scan++, m_Green, src_alpha);
int r = FXDIB_ALPHA_MERGE(*ori_scan, m_Red, src_alpha);
ori_scan += Bpp - 2;
*dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, b, cover_scan[col]);
dest_scan++;
*dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, g, cover_scan[col]);
dest_scan++;
*dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, r, cover_scan[col]);
dest_scan += Bpp - 2;
continue;
}
return;
}
if (Bpp == 1) {
for (int col = col_start; col < col_end; col++) {
int src_alpha;
if (clip_scan) {
src_alpha = m_Alpha * clip_scan[col] / 255;
} else {
src_alpha = m_Alpha;
}
if (m_bFullCover) {
*dest_scan = FXDIB_ALPHA_MERGE(*ori_scan++, m_Gray, src_alpha);
} else {
int gray = FXDIB_ALPHA_MERGE(*ori_scan++, m_Gray, src_alpha);
*dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, gray, cover_scan[col]);
dest_scan++;
}
}
} else {
int index = 0;
if (m_pDevice->GetPalette()) {
for (int i = 0; i < 2; i++) {
if (FXARGB_TODIB(m_pDevice->GetPalette()[i]) == m_Color) {
index = i;
}
}
} else {
index = ((uint8_t)m_Color == 0xff) ? 1 : 0;
}
uint8_t* dest_scan1 = dest_scan;
for (int col = col_start; col < col_end; col++) {
int src_alpha;
if (clip_scan) {
src_alpha = m_Alpha * cover_scan[col] * clip_scan[col] / 255 / 255;
} else {
src_alpha = m_Alpha * cover_scan[col] / 255;
}
if (src_alpha) {
if (!index) {
*dest_scan1 &= ~(1 << (7 - (col + span_left) % 8));
} else {
*dest_scan1 |= 1 << (7 - (col + span_left) % 8);
}
}
dest_scan1 = dest_scan + (span_left % 8 + col - col_start + 1) / 8;
}
}
}
void CompositeSpan1bpp(uint8_t* dest_scan,
int Bpp,
int span_left,
int span_len,
uint8_t* cover_scan,
int clip_left,
int clip_right,
uint8_t* clip_scan,
uint8_t* dest_extra_alpha_scan) {
ASSERT(!m_bRgbByteOrder);
ASSERT(!m_pDevice->IsCmykImage());
int col_start = span_left < clip_left ? clip_left - span_left : 0;
int col_end = (span_left + span_len) < clip_right
? span_len
: (clip_right - span_left);
dest_scan += col_start / 8;
int index = 0;
if (m_pDevice->GetPalette()) {
for (int i = 0; i < 2; i++) {
if (FXARGB_TODIB(m_pDevice->GetPalette()[i]) == m_Color) {
index = i;
}
}
} else {
index = ((uint8_t)m_Color == 0xff) ? 1 : 0;
}
uint8_t* dest_scan1 = dest_scan;
for (int col = col_start; col < col_end; col++) {
int src_alpha;
if (clip_scan) {
src_alpha = m_Alpha * cover_scan[col] * clip_scan[col] / 255 / 255;
} else {
src_alpha = m_Alpha * cover_scan[col] / 255;
}
if (src_alpha) {
if (!index) {
*dest_scan1 &= ~(1 << (7 - (col + span_left) % 8));
} else {
*dest_scan1 |= 1 << (7 - (col + span_left) % 8);
}
}
dest_scan1 = dest_scan + (span_left % 8 + col - col_start + 1) / 8;
}
}
void CompositeSpanGray(uint8_t* dest_scan,
int Bpp,
int span_left,
int span_len,
uint8_t* cover_scan,
int clip_left,
int clip_right,
uint8_t* clip_scan,
uint8_t* dest_extra_alpha_scan) {
ASSERT(!m_bRgbByteOrder);
int col_start = span_left < clip_left ? clip_left - span_left : 0;
int col_end = (span_left + span_len) < clip_right
? span_len
: (clip_right - span_left);
dest_scan += col_start;
if (dest_extra_alpha_scan) {
for (int col = col_start; col < col_end; col++) {
int src_alpha;
if (m_bFullCover) {
if (clip_scan) {
src_alpha = m_Alpha * clip_scan[col] / 255;
} else {
src_alpha = m_Alpha;
}
} else {
if (clip_scan) {
src_alpha = m_Alpha * cover_scan[col] * clip_scan[col] / 255 / 255;
} else {
src_alpha = m_Alpha * cover_scan[col] / 255;
}
}
if (src_alpha) {
if (src_alpha == 255) {
*dest_scan = m_Gray;
*dest_extra_alpha_scan = m_Alpha;
} else {
uint8_t dest_alpha = (*dest_extra_alpha_scan) + src_alpha -
(*dest_extra_alpha_scan) * src_alpha / 255;
*dest_extra_alpha_scan++ = dest_alpha;
int alpha_ratio = src_alpha * 255 / dest_alpha;
*dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, m_Gray, alpha_ratio);
dest_scan++;
continue;
}
}
dest_extra_alpha_scan++;
dest_scan++;
}
} else {
for (int col = col_start; col < col_end; col++) {
int src_alpha;
if (clip_scan) {
src_alpha = m_Alpha * cover_scan[col] * clip_scan[col] / 255 / 255;
} else {
src_alpha = m_Alpha * cover_scan[col] / 255;
}
if (src_alpha) {
if (src_alpha == 255) {
*dest_scan = m_Gray;
} else {
*dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, m_Gray, src_alpha);
}
}
dest_scan++;
}
}
}
void CompositeSpanARGB(uint8_t* dest_scan,
int Bpp,
int span_left,
int span_len,
uint8_t* cover_scan,
int clip_left,
int clip_right,
uint8_t* clip_scan,
uint8_t* dest_extra_alpha_scan) {
int col_start = span_left < clip_left ? clip_left - span_left : 0;
int col_end = (span_left + span_len) < clip_right
? span_len
: (clip_right - span_left);
dest_scan += col_start * Bpp;
if (m_bRgbByteOrder) {
for (int col = col_start; col < col_end; col++) {
int src_alpha;
if (m_bFullCover) {
if (clip_scan) {
src_alpha = m_Alpha * clip_scan[col] / 255;
} else {
src_alpha = m_Alpha;
}
} else {
if (clip_scan) {
src_alpha = m_Alpha * cover_scan[col] * clip_scan[col] / 255 / 255;
} else {
src_alpha = m_Alpha * cover_scan[col] / 255;
}
}
if (src_alpha) {
if (src_alpha == 255) {
*(uint32_t*)dest_scan = m_Color;
} else {
uint8_t dest_alpha =
dest_scan[3] + src_alpha - dest_scan[3] * src_alpha / 255;
dest_scan[3] = dest_alpha;
int alpha_ratio = src_alpha * 255 / dest_alpha;
*dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, m_Red, alpha_ratio);
dest_scan++;
*dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, m_Green, alpha_ratio);
dest_scan++;
*dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, m_Blue, alpha_ratio);
dest_scan += 2;
continue;
}
}
dest_scan += 4;
}
return;
}
for (int col = col_start; col < col_end; col++) {
int src_alpha;
if (m_bFullCover) {
if (clip_scan) {
src_alpha = m_Alpha * clip_scan[col] / 255;
} else {
src_alpha = m_Alpha;
}
} else {
if (clip_scan) {
src_alpha = m_Alpha * cover_scan[col] * clip_scan[col] / 255 / 255;
} else {
src_alpha = m_Alpha * cover_scan[col] / 255;
}
}
if (src_alpha) {
if (src_alpha == 255) {
*(uint32_t*)dest_scan = m_Color;
} else {
if (dest_scan[3] == 0) {
dest_scan[3] = src_alpha;
*dest_scan++ = m_Blue;
*dest_scan++ = m_Green;
*dest_scan = m_Red;
dest_scan += 2;
continue;
}
uint8_t dest_alpha =
dest_scan[3] + src_alpha - dest_scan[3] * src_alpha / 255;
dest_scan[3] = dest_alpha;
int alpha_ratio = src_alpha * 255 / dest_alpha;
*dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, m_Blue, alpha_ratio);
dest_scan++;
*dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, m_Green, alpha_ratio);
dest_scan++;
*dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, m_Red, alpha_ratio);
dest_scan += 2;
continue;
}
}
dest_scan += Bpp;
}
}
void CompositeSpanRGB(uint8_t* dest_scan,
int Bpp,
int span_left,
int span_len,
uint8_t* cover_scan,
int clip_left,
int clip_right,
uint8_t* clip_scan,
uint8_t* dest_extra_alpha_scan) {
int col_start = span_left < clip_left ? clip_left - span_left : 0;
int col_end = (span_left + span_len) < clip_right
? span_len
: (clip_right - span_left);
dest_scan += col_start * Bpp;
if (m_bRgbByteOrder) {
for (int col = col_start; col < col_end; col++) {
int src_alpha;
if (clip_scan) {
src_alpha = m_Alpha * cover_scan[col] * clip_scan[col] / 255 / 255;
} else {
src_alpha = m_Alpha * cover_scan[col] / 255;
}
if (src_alpha) {
if (src_alpha == 255) {
if (Bpp == 4) {
*(uint32_t*)dest_scan = m_Color;
} else if (Bpp == 3) {
*dest_scan++ = m_Red;
*dest_scan++ = m_Green;
*dest_scan++ = m_Blue;
continue;
}
} else {
*dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, m_Red, src_alpha);
dest_scan++;
*dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, m_Green, src_alpha);
dest_scan++;
*dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, m_Blue, src_alpha);
dest_scan += Bpp - 2;
continue;
}
}
dest_scan += Bpp;
}
return;
}
if (Bpp == 3 && dest_extra_alpha_scan) {
for (int col = col_start; col < col_end; col++) {
int src_alpha;
if (m_bFullCover) {
if (clip_scan) {
src_alpha = m_Alpha * clip_scan[col] / 255;
} else {
src_alpha = m_Alpha;
}
} else {
if (clip_scan) {
src_alpha = m_Alpha * cover_scan[col] * clip_scan[col] / 255 / 255;
} else {
src_alpha = m_Alpha * cover_scan[col] / 255;
}
}
if (src_alpha) {
if (src_alpha == 255) {
*dest_scan++ = (uint8_t)m_Blue;
*dest_scan++ = (uint8_t)m_Green;
*dest_scan++ = (uint8_t)m_Red;
*dest_extra_alpha_scan++ = (uint8_t)m_Alpha;
continue;
} else {
uint8_t dest_alpha = (*dest_extra_alpha_scan) + src_alpha -
(*dest_extra_alpha_scan) * src_alpha / 255;
*dest_extra_alpha_scan++ = dest_alpha;
int alpha_ratio = src_alpha * 255 / dest_alpha;
*dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, m_Blue, alpha_ratio);
dest_scan++;
*dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, m_Green, alpha_ratio);
dest_scan++;
*dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, m_Red, alpha_ratio);
dest_scan++;
continue;
}
}
dest_extra_alpha_scan++;
dest_scan += Bpp;
}
} else {
for (int col = col_start; col < col_end; col++) {
int src_alpha;
if (m_bFullCover) {
if (clip_scan) {
src_alpha = m_Alpha * clip_scan[col] / 255;
} else {
src_alpha = m_Alpha;
}
} else {
if (clip_scan) {
src_alpha = m_Alpha * cover_scan[col] * clip_scan[col] / 255 / 255;
} else {
src_alpha = m_Alpha * cover_scan[col] / 255;
}
}
if (src_alpha) {
if (src_alpha == 255) {
if (Bpp == 4) {
*(uint32_t*)dest_scan = m_Color;
} else if (Bpp == 3) {
*dest_scan++ = m_Blue;
*dest_scan++ = m_Green;
*dest_scan++ = m_Red;
continue;
}
} else {
*dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, m_Blue, src_alpha);
dest_scan++;
*dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, m_Green, src_alpha);
dest_scan++;
*dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, m_Red, src_alpha);
dest_scan += Bpp - 2;
continue;
}
}
dest_scan += Bpp;
}
}
}
void CompositeSpanCMYK(uint8_t* dest_scan,
int Bpp,
int span_left,
int span_len,
uint8_t* cover_scan,
int clip_left,
int clip_right,
uint8_t* clip_scan,
uint8_t* dest_extra_alpha_scan) {
ASSERT(!m_bRgbByteOrder);
int col_start = span_left < clip_left ? clip_left - span_left : 0;
int col_end = (span_left + span_len) < clip_right
? span_len
: (clip_right - span_left);
dest_scan += col_start * 4;
if (dest_extra_alpha_scan) {
for (int col = col_start; col < col_end; col++) {
int src_alpha;
if (m_bFullCover) {
if (clip_scan) {
src_alpha = m_Alpha * clip_scan[col] / 255;
} else {
src_alpha = m_Alpha;
}
} else {
if (clip_scan) {
src_alpha = m_Alpha * cover_scan[col] * clip_scan[col] / 255 / 255;
} else {
src_alpha = m_Alpha * cover_scan[col] / 255;
}
}
if (src_alpha) {
if (src_alpha == 255) {
*(FX_CMYK*)dest_scan = m_Color;
*dest_extra_alpha_scan = (uint8_t)m_Alpha;
} else {
uint8_t dest_alpha = (*dest_extra_alpha_scan) + src_alpha -
(*dest_extra_alpha_scan) * src_alpha / 255;
*dest_extra_alpha_scan++ = dest_alpha;
int alpha_ratio = src_alpha * 255 / dest_alpha;
*dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, m_Red, alpha_ratio);
dest_scan++;
*dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, m_Green, alpha_ratio);
dest_scan++;
*dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, m_Blue, alpha_ratio);
dest_scan++;
*dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, m_Gray, alpha_ratio);
dest_scan++;
continue;
}
}
dest_extra_alpha_scan++;
dest_scan += 4;
}
} else {
for (int col = col_start; col < col_end; col++) {
int src_alpha;
if (clip_scan) {
src_alpha = m_Alpha * cover_scan[col] * clip_scan[col] / 255 / 255;
} else {
src_alpha = m_Alpha * cover_scan[col] / 255;
}
if (src_alpha) {
if (src_alpha == 255) {
*(FX_CMYK*)dest_scan = m_Color;
} else {
*dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, m_Red, src_alpha);
dest_scan++;
*dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, m_Green, src_alpha);
dest_scan++;
*dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, m_Blue, src_alpha);
dest_scan++;
*dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, m_Gray, src_alpha);
dest_scan++;
continue;
}
}
dest_scan += 4;
}
}
}
template <class Scanline>
void render(const Scanline& sl) {
if (!m_pOriDevice && !composite_span) {
return;
}
int y = sl.y();
if (y < m_ClipBox.top || y >= m_ClipBox.bottom) {
return;
}
uint8_t* dest_scan = m_pDevice->GetBuffer() + m_pDevice->GetPitch() * y;
uint8_t* dest_scan_extra_alpha = nullptr;
CFX_DIBitmap* pAlphaMask = m_pDevice->m_pAlphaMask;
if (pAlphaMask) {
dest_scan_extra_alpha =
pAlphaMask->GetBuffer() + pAlphaMask->GetPitch() * y;
}
uint8_t* ori_scan = nullptr;
if (m_pOriDevice) {
ori_scan = m_pOriDevice->GetBuffer() + m_pOriDevice->GetPitch() * y;
}
int Bpp = m_pDevice->GetBPP() / 8;
FX_BOOL bDestAlpha = m_pDevice->HasAlpha() || m_pDevice->IsAlphaMask();
unsigned num_spans = sl.num_spans();
typename Scanline::const_iterator span = sl.begin();
while (1) {
int x = span->x;
ASSERT(span->len > 0);
uint8_t* dest_pos = nullptr;
uint8_t* dest_extra_alpha_pos = nullptr;
uint8_t* ori_pos = nullptr;
if (Bpp) {
ori_pos = ori_scan ? ori_scan + x * Bpp : nullptr;
dest_pos = dest_scan + x * Bpp;
dest_extra_alpha_pos =
dest_scan_extra_alpha ? dest_scan_extra_alpha + x : nullptr;
} else {
dest_pos = dest_scan + x / 8;
ori_pos = ori_scan ? ori_scan + x / 8 : nullptr;
}
uint8_t* clip_pos = nullptr;
if (m_pClipMask) {
clip_pos = m_pClipMask->GetBuffer() +
(y - m_ClipBox.top) * m_pClipMask->GetPitch() + x -
m_ClipBox.left;
}
if (ori_pos) {
CompositeSpan(dest_pos, ori_pos, Bpp, bDestAlpha, x, span->len,
span->covers, m_ClipBox.left, m_ClipBox.right, clip_pos);
} else {
(this->*composite_span)(dest_pos, Bpp, x, span->len, span->covers,
m_ClipBox.left, m_ClipBox.right, clip_pos,
dest_extra_alpha_pos);
}
if (--num_spans == 0) {
break;
}
++span;
}
}
FX_BOOL Init(CFX_DIBitmap* pDevice,
CFX_DIBitmap* pOriDevice,
const CFX_ClipRgn* pClipRgn,
uint32_t color,
FX_BOOL bFullCover,
FX_BOOL bRgbByteOrder,
int alpha_flag = 0,
void* pIccTransform = nullptr) {
m_pDevice = pDevice;
m_pClipRgn = pClipRgn;
composite_span = nullptr;
m_bRgbByteOrder = bRgbByteOrder;
m_pOriDevice = pOriDevice;
if (m_pClipRgn) {
m_ClipBox = m_pClipRgn->GetBox();
} else {
m_ClipBox.left = m_ClipBox.top = 0;
m_ClipBox.right = m_pDevice->GetWidth();
m_ClipBox.bottom = m_pDevice->GetHeight();
}
m_pClipMask = nullptr;
if (m_pClipRgn && m_pClipRgn->GetType() == CFX_ClipRgn::MaskF) {
m_pClipMask = m_pClipRgn->GetMask().GetObject();
}
m_bFullCover = bFullCover;
FX_BOOL bObjectCMYK = FXGETFLAG_COLORTYPE(alpha_flag);
FX_BOOL bDeviceCMYK = pDevice->IsCmykImage();
m_Alpha = bObjectCMYK ? FXGETFLAG_ALPHA_FILL(alpha_flag) : FXARGB_A(color);
CCodec_IccModule* pIccModule = nullptr;
if (!CFX_GEModule::Get()->GetCodecModule() ||
!CFX_GEModule::Get()->GetCodecModule()->GetIccModule()) {
pIccTransform = nullptr;
} else {
pIccModule = CFX_GEModule::Get()->GetCodecModule()->GetIccModule();
}
if (m_pDevice->GetBPP() == 8) {
ASSERT(!m_bRgbByteOrder);
composite_span = &CFX_Renderer::CompositeSpanGray;
if (m_pDevice->IsAlphaMask()) {
m_Gray = 255;
} else {
if (pIccTransform) {
uint8_t gray;
color = bObjectCMYK ? FXCMYK_TODIB(color) : FXARGB_TODIB(color);
pIccModule->TranslateScanline(pIccTransform, &gray,
(const uint8_t*)&color, 1);
m_Gray = gray;
} else {
if (bObjectCMYK) {
uint8_t r, g, b;
AdobeCMYK_to_sRGB1(FXSYS_GetCValue(color), FXSYS_GetMValue(color),
FXSYS_GetYValue(color), FXSYS_GetKValue(color),
r, g, b);
m_Gray = FXRGB2GRAY(r, g, b);
} else {
m_Gray =
FXRGB2GRAY(FXARGB_R(color), FXARGB_G(color), FXARGB_B(color));
}
}
}
return TRUE;
}
if (bDeviceCMYK) {
ASSERT(!m_bRgbByteOrder);
composite_span = &CFX_Renderer::CompositeSpanCMYK;
if (bObjectCMYK) {
m_Color = FXCMYK_TODIB(color);
if (pIccTransform) {
pIccModule->TranslateScanline(pIccTransform, (uint8_t*)&m_Color,
(const uint8_t*)&m_Color, 1);
}
} else {
if (!pIccTransform) {
return FALSE;
}
color = FXARGB_TODIB(color);
pIccModule->TranslateScanline(pIccTransform, (uint8_t*)&m_Color,
(const uint8_t*)&color, 1);
}
m_Red = ((uint8_t*)&m_Color)[0];
m_Green = ((uint8_t*)&m_Color)[1];
m_Blue = ((uint8_t*)&m_Color)[2];
m_Gray = ((uint8_t*)&m_Color)[3];
} else {
composite_span = (pDevice->GetFormat() == FXDIB_Argb)
? &CFX_Renderer::CompositeSpanARGB
: &CFX_Renderer::CompositeSpanRGB;
if (pIccTransform) {
color = bObjectCMYK ? FXCMYK_TODIB(color) : FXARGB_TODIB(color);
pIccModule->TranslateScanline(pIccTransform, (uint8_t*)&m_Color,
(const uint8_t*)&color, 1);
((uint8_t*)&m_Color)[3] = m_Alpha;
m_Red = ((uint8_t*)&m_Color)[2];
m_Green = ((uint8_t*)&m_Color)[1];
m_Blue = ((uint8_t*)&m_Color)[0];
if (m_bRgbByteOrder) {
m_Color = FXARGB_TODIB(m_Color);
m_Color = FXARGB_TOBGRORDERDIB(m_Color);
}
} else {
if (bObjectCMYK) {
uint8_t r, g, b;
AdobeCMYK_to_sRGB1(FXSYS_GetCValue(color), FXSYS_GetMValue(color),
FXSYS_GetYValue(color), FXSYS_GetKValue(color), r,
g, b);
m_Color = FXARGB_MAKE(m_Alpha, r, g, b);
if (m_bRgbByteOrder) {
m_Color = FXARGB_TOBGRORDERDIB(m_Color);
} else {
m_Color = FXARGB_TODIB(m_Color);
}
m_Red = r;
m_Green = g;
m_Blue = b;
} else {
if (m_bRgbByteOrder) {
m_Color = FXARGB_TOBGRORDERDIB(color);
} else {
m_Color = FXARGB_TODIB(color);
}
ArgbDecode(color, m_Alpha, m_Red, m_Green, m_Blue);
}
}
}
if (m_pDevice->GetBPP() == 1) {
composite_span = &CFX_Renderer::CompositeSpan1bpp;
}
return TRUE;
}
};
int CFX_AggDeviceDriver::GetDriverType() const {
return 1;
}
FX_BOOL CFX_AggDeviceDriver::RenderRasterizer(
agg::rasterizer_scanline_aa& rasterizer,
uint32_t color,
FX_BOOL bFullCover,
FX_BOOL bGroupKnockout,
int alpha_flag,
void* pIccTransform) {
CFX_DIBitmap* pt = bGroupKnockout ? m_pOriDevice : nullptr;
CFX_Renderer render;
if (!render.Init(m_pBitmap, pt, m_pClipRgn.get(), color, bFullCover,
m_bRgbByteOrder, alpha_flag, pIccTransform)) {
return FALSE;
}
agg::scanline_u8 scanline;
agg::render_scanlines(rasterizer, scanline, render,
(m_FillFlags & FXFILL_NOPATHSMOOTH) != 0);
return TRUE;
}
FX_BOOL CFX_AggDeviceDriver::DrawPath(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 (blend_type != FXDIB_BLEND_NORMAL)
return FALSE;
if (!GetBuffer())
return TRUE;
m_FillFlags = fill_mode;
if ((fill_mode & 3) && fill_color) {
CAgg_PathData path_data;
path_data.BuildPath(pPathData, pObject2Device);
agg::rasterizer_scanline_aa rasterizer;
rasterizer.clip_box(0.0f, 0.0f, (FX_FLOAT)(GetDeviceCaps(FXDC_PIXEL_WIDTH)),
(FX_FLOAT)(GetDeviceCaps(FXDC_PIXEL_HEIGHT)));
rasterizer.add_path(path_data.m_PathData);
rasterizer.filling_rule((fill_mode & 3) == FXFILL_WINDING
? agg::fill_non_zero
: agg::fill_even_odd);
if (!RenderRasterizer(rasterizer, fill_color, fill_mode & FXFILL_FULLCOVER,
FALSE, 0, nullptr)) {
return FALSE;
}
}
int stroke_alpha = FXARGB_A(stroke_color);
if (!pGraphState || !stroke_alpha)
return TRUE;
if (fill_mode & FX_ZEROAREA_FILL) {
CAgg_PathData path_data;
path_data.BuildPath(pPathData, pObject2Device);
agg::rasterizer_scanline_aa rasterizer;
rasterizer.clip_box(0.0f, 0.0f, (FX_FLOAT)(GetDeviceCaps(FXDC_PIXEL_WIDTH)),
(FX_FLOAT)(GetDeviceCaps(FXDC_PIXEL_HEIGHT)));
RasterizeStroke(rasterizer, path_data.m_PathData, nullptr, pGraphState, 1,
FALSE, fill_mode & FX_STROKE_TEXT_MODE);
if (!RenderRasterizer(rasterizer, stroke_color,
fill_mode & FXFILL_FULLCOVER, m_bGroupKnockout, 0,
nullptr)) {
return FALSE;
}
return TRUE;
}
CFX_Matrix matrix1;
CFX_Matrix matrix2;
if (pObject2Device) {
matrix1.a =
std::max(FXSYS_fabs(pObject2Device->a), FXSYS_fabs(pObject2Device->b));
matrix1.d = matrix1.a;
matrix2.Set(pObject2Device->a / matrix1.a, pObject2Device->b / matrix1.a,
pObject2Device->c / matrix1.d, pObject2Device->d / matrix1.d, 0,
0);
CFX_Matrix mtRervese;
mtRervese.SetReverse(matrix2);
matrix1 = *pObject2Device;
matrix1.Concat(mtRervese);
}
CAgg_PathData path_data;
path_data.BuildPath(pPathData, &matrix1);
agg::rasterizer_scanline_aa rasterizer;
rasterizer.clip_box(0.0f, 0.0f, (FX_FLOAT)(GetDeviceCaps(FXDC_PIXEL_WIDTH)),
(FX_FLOAT)(GetDeviceCaps(FXDC_PIXEL_HEIGHT)));
RasterizeStroke(rasterizer, path_data.m_PathData, &matrix2, pGraphState,
matrix1.a, FALSE, fill_mode & FX_STROKE_TEXT_MODE);
if (!RenderRasterizer(rasterizer, stroke_color, fill_mode & FXFILL_FULLCOVER,
m_bGroupKnockout, 0, nullptr)) {
return FALSE;
}
return TRUE;
}
FX_BOOL CFX_AggDeviceDriver::SetPixel(int x, int y, uint32_t color) {
if (!m_pBitmap->GetBuffer())
return TRUE;
if (!m_pClipRgn) {
if (!m_bRgbByteOrder)
return DibSetPixel(m_pBitmap, x, y, color, 0, nullptr);
RgbByteOrderSetPixel(m_pBitmap, x, y, color);
return TRUE;
}
if (!m_pClipRgn->GetBox().Contains(x, y))
return TRUE;
if (m_pClipRgn->GetType() == CFX_ClipRgn::RectI) {
if (!m_bRgbByteOrder)
return DibSetPixel(m_pBitmap, x, y, color, 0, nullptr);
RgbByteOrderSetPixel(m_pBitmap, x, y, color);
return TRUE;
}
if (m_pClipRgn->GetType() != CFX_ClipRgn::MaskF)
return TRUE;
const CFX_DIBitmap* pMask = m_pClipRgn->GetMask().GetObject();
int new_alpha = FXARGB_A(color) * pMask->GetScanline(y)[x] / 255;
color = (color & 0xffffff) | (new_alpha << 24);
if (m_bRgbByteOrder) {
RgbByteOrderSetPixel(m_pBitmap, x, y, color);
return TRUE;
}
return DibSetPixel(m_pBitmap, x, y, color, 0, nullptr);
}
FX_BOOL CFX_AggDeviceDriver::FillRectWithBlend(const FX_RECT* pRect,
uint32_t fill_color,
int blend_type) {
if (blend_type != FXDIB_BLEND_NORMAL)
return FALSE;
if (!m_pBitmap->GetBuffer())
return TRUE;
FX_RECT clip_rect;
GetClipBox(&clip_rect);
FX_RECT draw_rect = clip_rect;
if (pRect)
draw_rect.Intersect(*pRect);
if (draw_rect.IsEmpty())
return TRUE;
if (!m_pClipRgn || m_pClipRgn->GetType() == CFX_ClipRgn::RectI) {
if (m_bRgbByteOrder) {
RgbByteOrderCompositeRect(m_pBitmap, draw_rect.left, draw_rect.top,
draw_rect.Width(), draw_rect.Height(),
fill_color);
} else {
m_pBitmap->CompositeRect(draw_rect.left, draw_rect.top, draw_rect.Width(),
draw_rect.Height(), fill_color, 0, nullptr);
}
return TRUE;
}
m_pBitmap->CompositeMask(
draw_rect.left, draw_rect.top, draw_rect.Width(), draw_rect.Height(),
m_pClipRgn->GetMask().GetObject(), fill_color,
draw_rect.left - clip_rect.left, draw_rect.top - clip_rect.top,
FXDIB_BLEND_NORMAL, nullptr, m_bRgbByteOrder, 0, nullptr);
return TRUE;
}
FX_BOOL CFX_AggDeviceDriver::GetClipBox(FX_RECT* pRect) {
if (!m_pClipRgn) {
pRect->left = pRect->top = 0;
pRect->right = GetDeviceCaps(FXDC_PIXEL_WIDTH);
pRect->bottom = GetDeviceCaps(FXDC_PIXEL_HEIGHT);
return TRUE;
}
*pRect = m_pClipRgn->GetBox();
return TRUE;
}
FX_BOOL CFX_AggDeviceDriver::GetDIBits(CFX_DIBitmap* pBitmap,
int left,
int top) {
if (!m_pBitmap || !m_pBitmap->GetBuffer())
return TRUE;
FX_RECT rect(left, top, left + pBitmap->GetWidth(),
top + pBitmap->GetHeight());
CFX_DIBitmap* pBack = nullptr;
if (m_pOriDevice) {
pBack = m_pOriDevice->Clone(&rect);
if (!pBack)
return TRUE;
pBack->CompositeBitmap(0, 0, pBack->GetWidth(), pBack->GetHeight(),
m_pBitmap, 0, 0);
} else {
pBack = m_pBitmap->Clone(&rect);
if (!pBack)
return TRUE;
}
FX_BOOL bRet = TRUE;
left = std::min(left, 0);
top = std::min(top, 0);
if (m_bRgbByteOrder) {
RgbByteOrderTransferBitmap(pBitmap, 0, 0, rect.Width(), rect.Height(),
pBack, left, top);
} else {
bRet = pBitmap->TransferBitmap(0, 0, rect.Width(), rect.Height(), pBack,
left, top);
}
delete pBack;
return bRet;
}
CFX_DIBitmap* CFX_AggDeviceDriver::GetBackDrop() {
return m_pOriDevice;
}
FX_BOOL CFX_AggDeviceDriver::SetDIBits(const CFX_DIBSource* pBitmap,
uint32_t argb,
const FX_RECT* pSrcRect,
int left,
int top,
int blend_type) {
if (!m_pBitmap->GetBuffer())
return TRUE;
if (pBitmap->IsAlphaMask()) {
return m_pBitmap->CompositeMask(
left, top, pSrcRect->Width(), pSrcRect->Height(), pBitmap, argb,
pSrcRect->left, pSrcRect->top, blend_type, m_pClipRgn.get(),
m_bRgbByteOrder, 0, nullptr);
}
return m_pBitmap->CompositeBitmap(
left, top, pSrcRect->Width(), pSrcRect->Height(), pBitmap, pSrcRect->left,
pSrcRect->top, blend_type, m_pClipRgn.get(), m_bRgbByteOrder, nullptr);
}
FX_BOOL CFX_AggDeviceDriver::StretchDIBits(const CFX_DIBSource* pSource,
uint32_t argb,
int dest_left,
int dest_top,
int dest_width,
int dest_height,
const FX_RECT* pClipRect,
uint32_t flags,
int blend_type) {
if (!m_pBitmap->GetBuffer())
return TRUE;
if (dest_width == pSource->GetWidth() &&
dest_height == pSource->GetHeight()) {
FX_RECT rect(0, 0, dest_width, dest_height);
return SetDIBits(pSource, argb, &rect, dest_left, dest_top, blend_type);
}
FX_RECT dest_rect(dest_left, dest_top, dest_left + dest_width,
dest_top + dest_height);
dest_rect.Normalize();
FX_RECT dest_clip = dest_rect;
dest_clip.Intersect(*pClipRect);
CFX_BitmapComposer composer;
composer.Compose(m_pBitmap, m_pClipRgn.get(), 255, argb, dest_clip, FALSE,
FALSE, FALSE, m_bRgbByteOrder, 0, nullptr, blend_type);
dest_clip.Offset(-dest_rect.left, -dest_rect.top);
CFX_ImageStretcher stretcher(&composer, pSource, dest_width, dest_height,
dest_clip, flags);
if (stretcher.Start())
stretcher.Continue(nullptr);
return TRUE;
}
FX_BOOL CFX_AggDeviceDriver::StartDIBits(const CFX_DIBSource* pSource,
int bitmap_alpha,
uint32_t argb,
const CFX_Matrix* pMatrix,
uint32_t render_flags,
void*& handle,
int blend_type) {
if (!m_pBitmap->GetBuffer())
return TRUE;
CFX_ImageRenderer* pRenderer = new CFX_ImageRenderer;
pRenderer->Start(m_pBitmap, m_pClipRgn.get(), pSource, bitmap_alpha, argb,
pMatrix, render_flags, m_bRgbByteOrder, 0, nullptr);
handle = pRenderer;
return TRUE;
}
FX_BOOL CFX_AggDeviceDriver::ContinueDIBits(void* pHandle, IFX_Pause* pPause) {
if (!m_pBitmap->GetBuffer()) {
return TRUE;
}
return ((CFX_ImageRenderer*)pHandle)->Continue(pPause);
}
void CFX_AggDeviceDriver::CancelDIBits(void* pHandle) {
if (!m_pBitmap->GetBuffer()) {
return;
}
delete (CFX_ImageRenderer*)pHandle;
}
#ifndef _SKIA_SUPPORT_
CFX_FxgeDevice::CFX_FxgeDevice() {
m_bOwnedBitmap = FALSE;
}
bool CFX_FxgeDevice::Attach(CFX_DIBitmap* pBitmap,
bool bRgbByteOrder,
CFX_DIBitmap* pOriDevice,
bool bGroupKnockout) {
if (!pBitmap)
return false;
SetBitmap(pBitmap);
SetDeviceDriver(WrapUnique(new CFX_AggDeviceDriver(
pBitmap, bRgbByteOrder, pOriDevice, bGroupKnockout)));
return true;
}
bool CFX_FxgeDevice::Create(int width,
int height,
FXDIB_Format format,
CFX_DIBitmap* pOriDevice) {
m_bOwnedBitmap = true;
CFX_DIBitmap* pBitmap = new CFX_DIBitmap;
if (!pBitmap->Create(width, height, format)) {
delete pBitmap;
return false;
}
SetBitmap(pBitmap);
SetDeviceDriver(
WrapUnique(new CFX_AggDeviceDriver(pBitmap, FALSE, pOriDevice, FALSE)));
return true;
}
CFX_FxgeDevice::~CFX_FxgeDevice() {
if (m_bOwnedBitmap) {
delete GetBitmap();
}
}
#endif