// 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/include/cfx_renderdevice.h" #include "core/fxge/include/cfx_fxgedevice.h" #include "core/fxge/include/cfx_graphstatedata.h" #include "core/fxge/include/cfx_pathdata.h" #include "core/fxge/include/ifx_renderdevicedriver.h" #if defined _SKIA_SUPPORT_ #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_OriginX == glyphs.front().m_OriginX; if (!bVertical && (glyphs.back().m_OriginY != glyphs.front().m_OriginY)) return; for (size_t i = glyphs.size() - 1; i > 1; --i) { FXTEXT_GLYPHPOS& next = glyphs[i]; int next_origin = bVertical ? next.m_OriginY : next.m_OriginX; FX_FLOAT next_origin_f = bVertical ? next.m_fOriginY : next.m_fOriginX; FXTEXT_GLYPHPOS& current = glyphs[i - 1]; int& current_origin = bVertical ? current.m_OriginY : current.m_OriginX; FX_FLOAT current_origin_f = bVertical ? current.m_fOriginY : current.m_fOriginX; int space = next_origin - current_origin; FX_FLOAT space_f = next_origin_f - current_origin_f; FX_FLOAT error = FXSYS_fabs(space_f) - FXSYS_fabs(static_cast<FX_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 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); int alpha_ratio = src_alpha * 255 / dest_alpha; dest[0] = FXDIB_ALPHA_MERGE(dest[0], b, alpha_ratio); dest[1] = FXDIB_ALPHA_MERGE(dest[1], g, alpha_ratio); dest[2] = FXDIB_ALPHA_MERGE(dest[2], r, alpha_ratio); dest[3] = dest_alpha; } void NormalizeRgbDst(int src_value, int r, int g, int b, int a, uint8_t* dest) { int src_alpha = CalcAlpha(TextGammaAdjust(src_value), a); dest[0] = FXDIB_ALPHA_MERGE(dest[0], b, src_alpha); dest[1] = FXDIB_ALPHA_MERGE(dest[1], g, src_alpha); dest[2] = FXDIB_ALPHA_MERGE(dest[2], r, src_alpha); } void NormalizeRgbSrc(int src_value, int r, int g, int b, int a, uint8_t* dest) { int src_alpha = CalcAlpha(TextGammaAdjust(src_value), a); if (src_alpha == 0) return; dest[0] = FXDIB_ALPHA_MERGE(dest[0], b, src_alpha); dest[1] = FXDIB_ALPHA_MERGE(dest[1], g, src_alpha); dest[2] = FXDIB_ALPHA_MERGE(dest[2], r, src_alpha); } void NormalizeArgbDest(int src_value, int r, int g, int b, int a, uint8_t* dest) { int src_alpha = CalcAlpha(TextGammaAdjust(src_value), a); 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 NormalizeArgbSrc(int src_value, int r, int g, int b, int a, uint8_t* dest) { int src_alpha = CalcAlpha(TextGammaAdjust(src_value), a); if (src_alpha == 0) return; uint8_t back_alpha = dest[3]; if (back_alpha == 0) { FXARGB_SETDIB(dest, FXARGB_MAKE(src_alpha, r, g, b)); } else { ApplyDestAlpha(back_alpha, src_alpha, r, g, b, dest); } } void NextPixel(uint8_t** src_scan, uint8_t** dst_scan, int bpp) { *src_scan += 3; *dst_scan += bpp; } void SetAlpha(uint8_t* alpha) { alpha[3] = 255; } void SetAlphaDoNothing(uint8_t* alpha) {} void DrawNormalTextHelper(CFX_DIBitmap* bitmap, const 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; auto* pNormalizeSrcFunc = has_alpha ? &NormalizeArgbSrc : &NormalizeRgbDst; auto* pNormalizeDstFunc = has_alpha ? &NormalizeArgbDest : &NormalizeRgbSrc; auto* pSetAlpha = has_alpha ? &SetAlpha : &SetAlphaDoNothing; 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]); } pSetAlpha(dest_scan); NextPixel(&src_scan, &dest_scan, Bpp); } } else 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]); pSetAlpha(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]); pSetAlpha(dest_scan); NextPixel(&src_scan, &dest_scan, Bpp); } } else { 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]); } pSetAlpha(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]); pSetAlpha(dest_scan); NextPixel(&src_scan, &dest_scan, Bpp); } } } else { if (x_subpixel == 0) { for (int col = start_col; col < end_col; col++) { if (bNormal) { int src_value = AverageRgb(&src_scan[0]); pNormalizeDstFunc(src_value, r, g, b, a, dest_scan); } else { MergeGammaAdjustRgb(&src_scan[0], r, g, b, a, &dest_scan[0]); pSetAlpha(dest_scan); } NextPixel(&src_scan, &dest_scan, Bpp); } } else if (x_subpixel == 1) { if (bNormal) { int src_value = start_col > left ? AverageRgb(&src_scan[-1]) : (src_scan[0] + src_scan[1]) / 3; pNormalizeSrcFunc(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]); pSetAlpha(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]); pNormalizeDstFunc(src_value, r, g, b, a, dest_scan); } else { MergeGammaAdjustRgb(&src_scan[-1], r, g, b, a, &dest_scan[0]); pSetAlpha(dest_scan); } NextPixel(&src_scan, &dest_scan, Bpp); } } else { if (bNormal) { int src_value = start_col > left ? AverageRgb(&src_scan[-2]) : src_scan[0] / 3; pNormalizeSrcFunc(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]); pSetAlpha(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]); pNormalizeDstFunc(src_value, r, g, b, a, dest_scan); } else { MergeGammaAdjustRgb(&src_scan[-2], r, g, b, a, &dest_scan[0]); pSetAlpha(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") != -1) return false; if (bsPsName == "CNAAJI+cmex10") return false; #endif return true; } } // namespace 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.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 = (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.GetOuterRect(); 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 FX_BOOL CFX_RenderDevice::DrawNormalText(int nChars, const FXTEXT_CHARPOS* pCharPos, CFX_Font* pFont, CFX_FontCache* pCache, FX_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, pCache, 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, pCache, 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 (FXSYS_fabs(char2device.a) + FXSYS_fabs(char2device.b) > 50 * 1.0f || ((m_DeviceClass == FXDC_PRINTER) && !(text_flags & FXTEXT_PRINTIMAGETEXT))) { if (pFont->GetFace() || (pFont->GetSubstFont()->m_SubstFlags & FXFONT_SUBST_GLYPHPATH)) { int nPathFlags = (text_flags & FXTEXT_NOSMOOTH) == 0 ? 0 : FXFILL_NOPATHSMOOTH; return DrawTextPathWithFlags(nChars, pCharPos, pFont, pCache, 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() || (pFont->GetSubstFont()->m_SubstFlags & FXFONT_SUBST_CLEARTYPE)) { bClearType = !!(text_flags & FXTEXT_CLEARTYPE); } bNormal = !bClearType; } } } if (!pCache) pCache = CFX_GEModule::Get()->GetFontCache(); CFX_FaceCache* pFaceCache = pCache->GetCachedFace(pFont); CFX_AutoFontCache autoFontCache(pCache, pFont); std::vector<FXTEXT_GLYPHPOS> glyphs(nChars); CFX_Matrix matrixCTM = GetCTM(); FX_FLOAT scale_x = FXSYS_fabs(matrixCTM.a); FX_FLOAT scale_y = FXSYS_fabs(matrixCTM.d); CFX_Matrix deviceCtm = char2device; deviceCtm.Concat(scale_x, 0, 0, scale_y, 0, 0); text2Device.Concat(scale_x, 0, 0, scale_y, 0, 0); for (size_t i = 0; i < glyphs.size(); ++i) { FXTEXT_GLYPHPOS& glyph = glyphs[i]; const FXTEXT_CHARPOS& charpos = pCharPos[i]; glyph.m_fOriginX = charpos.m_OriginX; glyph.m_fOriginY = charpos.m_OriginY; text2Device.Transform(glyph.m_fOriginX, glyph.m_fOriginY); if (anti_alias < FXFT_RENDER_MODE_LCD) glyph.m_OriginX = FXSYS_round(glyph.m_fOriginX); else glyph.m_OriginX = (int)FXSYS_floor(glyph.m_fOriginX); glyph.m_OriginY = FXSYS_round(glyph.m_fOriginY); 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 = pFaceCache->LoadGlyphBitmap( pFont, charpos.m_GlyphIndex, charpos.m_bFontStyle, &new_matrix, charpos.m_FontCharWidth, anti_alias, nativetext_flags); } else { glyph.m_pGlyph = pFaceCache->LoadGlyphBitmap( pFont, 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); 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((FX_FLOAT)(bmp_rect1.left) / scale_x), FXSYS_round((FX_FLOAT)(bmp_rect1.top) / scale_y), FXSYS_round((FX_FLOAT)bmp_rect1.right / scale_x), FXSYS_round((FX_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) { CFX_DIBitmap bitmap; 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; const CFX_DIBitmap* pGlyph = &glyph.m_pGlyph->m_Bitmap; bitmap.TransferBitmap( glyph.m_OriginX + glyph.m_pGlyph->m_Left - pixel_left, glyph.m_OriginY - 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); } CFX_DIBitmap bitmap; 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) ArgbDecode(fill_color, a, r, g, b); for (const FXTEXT_GLYPHPOS& glyph : glyphs) { if (!glyph.m_pGlyph) continue; const CFX_DIBitmap* pGlyph = &glyph.m_pGlyph->m_Bitmap; int left = glyph.m_OriginX + glyph.m_pGlyph->m_Left - pixel_left; int top = glyph.m_OriginY - glyph.m_pGlyph->m_Top - pixel_top; int ncols = pGlyph->GetWidth(); int nrows = pGlyph->GetHeight(); if (anti_alias == FXFT_RENDER_MODE_NORMAL) { if (!bitmap.CompositeMask(left, top, ncols, nrows, pGlyph, fill_color, 0, 0, FXDIB_BLEND_NORMAL, nullptr, FALSE, 0, nullptr)) { return FALSE; } continue; } bool bBGRStripe = !!(text_flags & FXTEXT_BGR_STRIPE); ncols /= 3; int x_subpixel = (int)(glyph.m_fOriginX * 3) % 3; int start_col = std::max(left, 0); int end_col = std::min(left + ncols, dest_width); if (start_col >= end_col) continue; DrawNormalTextHelper(&bitmap, pGlyph, nrows, left, top, 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; } FX_BOOL CFX_RenderDevice::DrawTextPathWithFlags( int nChars, const FXTEXT_CHARPOS* pCharPos, CFX_Font* pFont, CFX_FontCache* pCache, FX_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) { if (!pCache) pCache = CFX_GEModule::Get()->GetFontCache(); CFX_FaceCache* pFaceCache = pCache->GetCachedFace(pFont); CFX_AutoFontCache autoFontCache(pCache, pFont); for (int iChar = 0; iChar < nChars; iChar++) { const FXTEXT_CHARPOS& charpos = pCharPos[iChar]; CFX_Matrix matrix; if (charpos.m_bGlyphAdjust) { matrix.Set(charpos.m_AdjustMatrix[0], charpos.m_AdjustMatrix[1], charpos.m_AdjustMatrix[2], charpos.m_AdjustMatrix[3], 0, 0); } matrix.Concat(font_size, 0, 0, font_size, charpos.m_OriginX, charpos.m_OriginY); const CFX_PathData* pPath = pFaceCache->LoadGlyphPath( pFont, 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; }