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// 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/include/fx_ge.h"
#include "core/fxge/include/ifx_renderdevicedriver.h"
#if defined _SKIA_SUPPORT_
#include "third_party/skia/include/core/SkTypes.h"
#endif
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() {}
#ifdef _SKIA_SUPPORT_
void CFX_RenderDevice::Flush() {
m_pDeviceDriver.reset();
}
#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;
}
}
FX_BOOL CFX_RenderDevice::StartRendering() {
return m_pDeviceDriver->StartRendering();
}
void CFX_RenderDevice::EndRendering() {
m_pDeviceDriver->EndRendering();
}
void CFX_RenderDevice::SaveState() {
m_pDeviceDriver->SaveState();
}
void CFX_RenderDevice::RestoreState(bool bKeepSaved) {
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();
}
FX_BOOL CFX_RenderDevice::CreateCompatibleBitmap(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_
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
}
FX_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;
}
FX_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;
}
FX_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;
}
FX_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;
if (stroke_alpha == 0 && pPathData->GetPointCount() == 2) {
FX_PATHPOINT* pPoints = pPathData->GetPoints();
FX_FLOAT x1, x2, y1, y2;
if (pObject2Device) {
pObject2Device->Transform(pPoints[0].m_PointX, pPoints[0].m_PointY, x1,
y1);
pObject2Device->Transform(pPoints[1].m_PointX, pPoints[1].m_PointY, x2,
y2);
} else {
x1 = pPoints[0].m_PointX;
y1 = pPoints[0].m_PointY;
x2 = pPoints[1].m_PointX;
y2 = pPoints[1].m_PointY;
}
DrawCosmeticLineWithFillModeAndBlend(x1, y1, x2, y2, fill_color, fill_mode,
blend_type);
return TRUE;
}
if ((pPathData->GetPointCount() == 5 || pPathData->GetPointCount() == 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.GetOutterRect();
int width = (int)FXSYS_ceil(rect_f.right - rect_f.left);
if (width < 1) {
width = 1;
if (rect_i.left == rect_i.right) {
rect_i.right++;
}
}
int height = (int)FXSYS_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 - (FX_FLOAT)(rect_i.left) >
(FX_FLOAT)(rect_i.right) - rect_f.right) {
rect_i.left++;
} else {
rect_i.right--;
}
}
if (rect_i.Height() >= height + 1) {
if (rect_f.top - (FX_FLOAT)(rect_i.top) >
(FX_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;
FX_BOOL bThin = FALSE;
if (pPathData->GetZeroAreaPath(newPath, (CFX_Matrix*)pObject2Device, bThin,
m_pDeviceDriver->GetDriverType())) {
CFX_GraphStateData graphState;
graphState.m_LineWidth = 0.0f;
uint32_t strokecolor = fill_color;
if (bThin) {
strokecolor = (((fill_alpha >> 2) << 24) | (strokecolor & 0x00ffffff));
}
CFX_Matrix* pMatrix = nullptr;
if (pObject2Device && !pObject2Device->IsIdentity()) {
pMatrix = (CFX_Matrix*)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
FX_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) {
bbox.Transform(pObject2Device);
}
CFX_Matrix ctm = GetCTM();
FX_FLOAT fScaleX = FXSYS_fabs(ctm.a);
FX_FLOAT fScaleY = FXSYS_fabs(ctm.d);
FX_RECT rect = bbox.GetOutterRect();
CFX_DIBitmap bitmap, Backdrop;
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_FxgeDevice bitmap_device;
bitmap_device.Attach(&bitmap, false, &Backdrop, true);
CFX_Matrix matrix;
if (pObject2Device) {
matrix = *pObject2Device;
}
matrix.TranslateI(-rect.left, -rect.top);
matrix.Concat(fScaleX, 0, 0, fScaleY, 0, 0);
if (!bitmap_device.GetDeviceDriver()->DrawPath(
pPathData, &matrix, pGraphState, fill_color, stroke_color,
fill_mode, blend_type)) {
return FALSE;
}
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);
}
FX_BOOL CFX_RenderDevice::SetPixel(int x, int y, uint32_t color) {
if (m_pDeviceDriver->SetPixel(x, y, color))
return TRUE;
FX_RECT rect(x, y, x + 1, y + 1);
return FillRectWithBlend(&rect, color, FXDIB_BLEND_NORMAL);
}
FX_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;
CFX_DIBitmap bitmap;
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, nullptr)) {
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;
}
FX_BOOL CFX_RenderDevice::DrawCosmeticLineWithFillModeAndBlend(FX_FLOAT x1,
FX_FLOAT y1,
FX_FLOAT x2,
FX_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.SetPointCount(2);
path.SetPoint(0, x1, y1, FXPT_MOVETO);
path.SetPoint(1, x2, y2, FXPT_LINETO);
return m_pDeviceDriver->DrawPath(&path, nullptr, &graph_state, 0, color,
fill_mode, blend_type);
}
FX_BOOL CFX_RenderDevice::GetDIBits(CFX_DIBitmap* pBitmap, int left, int top) {
if (!(m_RenderCaps & FXRC_GET_BITS))
return FALSE;
return m_pDeviceDriver->GetDIBits(pBitmap, left, top);
}
CFX_DIBitmap* CFX_RenderDevice::GetBackDrop() {
return m_pDeviceDriver->GetBackDrop();
}
FX_BOOL CFX_RenderDevice::SetDIBitsWithBlend(const CFX_DIBSource* pBitmap,
int left,
int top,
int blend_mode) {
ASSERT(!pBitmap->IsAlphaMask());
CFX_Matrix ctm = GetCTM();
FX_FLOAT fScaleX = FXSYS_fabs(ctm.a);
FX_FLOAT fScaleY = FXSYS_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))) {
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);
CFX_DIBitmap background;
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, nullptr)) {
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);
}
return m_pDeviceDriver->SetDIBits(pBitmap, 0, &src_rect, dest_rect.left,
dest_rect.top, blend_mode);
}
FX_BOOL CFX_RenderDevice::StretchDIBitsWithFlagsAndBlend(
const 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);
if (clip_box.IsEmpty())
return TRUE;
return m_pDeviceDriver->StretchDIBits(pBitmap, 0, left, top, dest_width,
dest_height, &clip_box, flags,
blend_mode);
}
FX_BOOL CFX_RenderDevice::SetBitMask(const 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);
}
FX_BOOL CFX_RenderDevice::StretchBitMask(const 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);
}
FX_BOOL CFX_RenderDevice::StretchBitMaskWithFlags(const 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);
}
FX_BOOL CFX_RenderDevice::StartDIBitsWithBlend(const CFX_DIBSource* pBitmap,
int bitmap_alpha,
uint32_t argb,
const CFX_Matrix* pMatrix,
uint32_t flags,
void*& handle,
int blend_mode) {
return m_pDeviceDriver->StartDIBits(pBitmap, bitmap_alpha, argb, pMatrix,
flags, handle, blend_mode);
}
FX_BOOL CFX_RenderDevice::ContinueDIBits(void* handle, IFX_Pause* pPause) {
return m_pDeviceDriver->ContinueDIBits(handle, pPause);
}
void CFX_RenderDevice::CancelDIBits(void* handle) {
m_pDeviceDriver->CancelDIBits(handle);
}
#ifdef _SKIA_SUPPORT_
void CFX_RenderDevice::DebugVerifyBitmapIsPreMultiplied() const {
SkASSERT(0);
}
#endif