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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"
#if _FX_OS_ == _FX_WIN32_DESKTOP_ || _FX_OS_ == _FX_WIN64_DESKTOP_
#include <windows.h>
#include "core/fxge/dib/dib_int.h"
#include "core/fxge/ge/fx_text_int.h"
#include "core/fxge/include/fx_freetype.h"
#include "core/fxge/include/fx_ge_win32.h"
#include "core/fxge/win32/win32_int.h"
namespace {
CFX_DIBitmap* Transform1bppBitmap(const CFX_DIBSource* pSrc,
const CFX_Matrix* pDestMatrix) {
ASSERT(pSrc->GetFormat() == FXDIB_1bppRgb ||
pSrc->GetFormat() == FXDIB_1bppMask ||
pSrc->GetFormat() == FXDIB_1bppCmyk);
CFX_DIBExtractor src_bitmap(pSrc);
CFX_DIBitmap* pSrcBitmap = src_bitmap;
if (!pSrcBitmap)
return nullptr;
int src_width = pSrcBitmap->GetWidth(), src_height = pSrcBitmap->GetHeight();
uint8_t* src_buf = pSrcBitmap->GetBuffer();
uint32_t src_pitch = pSrcBitmap->GetPitch();
FX_FLOAT dest_area = pDestMatrix->GetUnitArea();
FX_FLOAT area_scale = ((FX_FLOAT)(src_width * src_height)) / dest_area;
FX_FLOAT size_scale = FXSYS_sqrt(area_scale);
CFX_Matrix adjusted_matrix(*pDestMatrix);
adjusted_matrix.Scale(size_scale, size_scale);
CFX_FloatRect result_rect_f = adjusted_matrix.GetUnitRect();
FX_RECT result_rect = result_rect_f.GetOutterRect();
CFX_Matrix src2result;
src2result.e = adjusted_matrix.c + adjusted_matrix.e;
src2result.f = adjusted_matrix.d + adjusted_matrix.f;
src2result.a = adjusted_matrix.a / pSrcBitmap->GetWidth();
src2result.b = adjusted_matrix.b / pSrcBitmap->GetWidth();
src2result.c = -adjusted_matrix.c / pSrcBitmap->GetHeight();
src2result.d = -adjusted_matrix.d / pSrcBitmap->GetHeight();
src2result.TranslateI(-result_rect.left, -result_rect.top);
CFX_Matrix result2src;
result2src.SetReverse(src2result);
CPDF_FixedMatrix result2src_fix(result2src, 8);
int result_width = result_rect.Width();
int result_height = result_rect.Height();
std::unique_ptr<CFX_DIBitmap> pTempBitmap(new CFX_DIBitmap);
if (!pTempBitmap->Create(result_width, result_height, pSrc->GetFormat())) {
if (pSrcBitmap != src_bitmap)
delete pSrcBitmap;
return nullptr;
}
pTempBitmap->CopyPalette(pSrc->GetPalette());
uint8_t* dest_buf = pTempBitmap->GetBuffer();
int dest_pitch = pTempBitmap->GetPitch();
FXSYS_memset(dest_buf, pSrc->IsAlphaMask() ? 0 : 0xff,
dest_pitch * result_height);
if (pSrcBitmap->IsAlphaMask()) {
for (int dest_y = 0; dest_y < result_height; dest_y++) {
uint8_t* dest_scan = dest_buf + dest_y * dest_pitch;
for (int dest_x = 0; dest_x < result_width; dest_x++) {
int src_x, src_y;
result2src_fix.Transform(dest_x, dest_y, src_x, src_y);
if (src_x < 0 || src_x >= src_width || src_y < 0 ||
src_y >= src_height) {
continue;
}
if (!((src_buf + src_pitch * src_y)[src_x / 8] &
(1 << (7 - src_x % 8)))) {
continue;
}
dest_scan[dest_x / 8] |= 1 << (7 - dest_x % 8);
}
}
} else {
for (int dest_y = 0; dest_y < result_height; dest_y++) {
uint8_t* dest_scan = dest_buf + dest_y * dest_pitch;
for (int dest_x = 0; dest_x < result_width; dest_x++) {
int src_x, src_y;
result2src_fix.Transform(dest_x, dest_y, src_x, src_y);
if (src_x < 0 || src_x >= src_width || src_y < 0 ||
src_y >= src_height) {
continue;
}
if ((src_buf + src_pitch * src_y)[src_x / 8] & (1 << (7 - src_x % 8))) {
continue;
}
dest_scan[dest_x / 8] &= ~(1 << (7 - dest_x % 8));
}
}
}
if (pSrcBitmap != src_bitmap)
delete pSrcBitmap;
return pTempBitmap.release();
}
} // namespace
CGdiPrinterDriver::CGdiPrinterDriver(HDC hDC)
: CGdiDeviceDriver(hDC, FXDC_PRINTER),
m_HorzSize(::GetDeviceCaps(m_hDC, HORZSIZE)),
m_VertSize(::GetDeviceCaps(m_hDC, VERTSIZE)) {}
CGdiPrinterDriver::~CGdiPrinterDriver() {}
int CGdiPrinterDriver::GetDeviceCaps(int caps_id) {
if (caps_id == FXDC_HORZ_SIZE)
return m_HorzSize;
if (caps_id == FXDC_VERT_SIZE)
return m_VertSize;
return CGdiDeviceDriver::GetDeviceCaps(caps_id);
}
FX_BOOL CGdiPrinterDriver::SetDIBits(const CFX_DIBSource* pSource,
uint32_t color,
const FX_RECT* pSrcRect,
int left,
int top,
int blend_type) {
if (pSource->IsAlphaMask()) {
FX_RECT clip_rect(left, top, left + pSrcRect->Width(),
top + pSrcRect->Height());
return StretchDIBits(pSource, color, left - pSrcRect->left,
top - pSrcRect->top, pSource->GetWidth(),
pSource->GetHeight(), &clip_rect, 0,
FXDIB_BLEND_NORMAL);
}
ASSERT(pSource && !pSource->IsAlphaMask() && pSrcRect);
ASSERT(blend_type == FXDIB_BLEND_NORMAL);
if (pSource->HasAlpha())
return FALSE;
CFX_DIBExtractor temp(pSource);
CFX_DIBitmap* pBitmap = temp;
if (!pBitmap)
return FALSE;
return GDI_SetDIBits(pBitmap, pSrcRect, left, top, nullptr);
}
FX_BOOL CGdiPrinterDriver::StretchDIBits(const CFX_DIBSource* pSource,
uint32_t color,
int dest_left,
int dest_top,
int dest_width,
int dest_height,
const FX_RECT* pClipRect,
uint32_t flags,
int blend_type) {
if (pSource->IsAlphaMask()) {
int alpha = FXARGB_A(color);
if (pSource->GetBPP() != 1 || alpha != 255)
return FALSE;
if (dest_width < 0 || dest_height < 0) {
std::unique_ptr<CFX_DIBitmap> pFlipped(
pSource->FlipImage(dest_width < 0, dest_height < 0));
if (!pFlipped)
return FALSE;
if (dest_width < 0)
dest_left += dest_width;
if (dest_height < 0)
dest_top += dest_height;
return GDI_StretchBitMask(pFlipped.get(), dest_left, dest_top,
abs(dest_width), abs(dest_height), color, flags,
0, nullptr);
}
CFX_DIBExtractor temp(pSource);
CFX_DIBitmap* pBitmap = temp;
if (!pBitmap)
return FALSE;
return GDI_StretchBitMask(pBitmap, dest_left, dest_top, dest_width,
dest_height, color, flags, 0, nullptr);
}
if (pSource->HasAlpha())
return FALSE;
if (dest_width < 0 || dest_height < 0) {
std::unique_ptr<CFX_DIBitmap> pFlipped(
pSource->FlipImage(dest_width < 0, dest_height < 0));
if (!pFlipped)
return FALSE;
if (dest_width < 0)
dest_left += dest_width;
if (dest_height < 0)
dest_top += dest_height;
return GDI_StretchDIBits(pFlipped.get(), dest_left, dest_top,
abs(dest_width), abs(dest_height), flags, nullptr);
}
CFX_DIBExtractor temp(pSource);
CFX_DIBitmap* pBitmap = temp;
if (!pBitmap)
return FALSE;
return GDI_StretchDIBits(pBitmap, dest_left, dest_top, dest_width,
dest_height, flags, nullptr);
}
FX_BOOL CGdiPrinterDriver::StartDIBits(const CFX_DIBSource* pSource,
int bitmap_alpha,
uint32_t color,
const CFX_Matrix* pMatrix,
uint32_t render_flags,
void*& handle,
int blend_type) {
if (bitmap_alpha < 255 || pSource->HasAlpha() ||
(pSource->IsAlphaMask() && (pSource->GetBPP() != 1))) {
return FALSE;
}
CFX_FloatRect unit_rect = pMatrix->GetUnitRect();
FX_RECT full_rect = unit_rect.GetOutterRect();
if (FXSYS_fabs(pMatrix->b) < 0.5f && pMatrix->a != 0 &&
FXSYS_fabs(pMatrix->c) < 0.5f && pMatrix->d != 0) {
FX_BOOL bFlipX = pMatrix->a < 0;
FX_BOOL bFlipY = pMatrix->d > 0;
return StretchDIBits(pSource, color,
bFlipX ? full_rect.right : full_rect.left,
bFlipY ? full_rect.bottom : full_rect.top,
bFlipX ? -full_rect.Width() : full_rect.Width(),
bFlipY ? -full_rect.Height() : full_rect.Height(),
nullptr, 0, blend_type);
}
if (FXSYS_fabs(pMatrix->a) < 0.5f && FXSYS_fabs(pMatrix->d) < 0.5f) {
std::unique_ptr<CFX_DIBitmap> pTransformed(
pSource->SwapXY(pMatrix->c > 0, pMatrix->b < 0));
if (!pTransformed)
return FALSE;
return StretchDIBits(pTransformed.get(), color, full_rect.left,
full_rect.top, full_rect.Width(), full_rect.Height(),
nullptr, 0, blend_type);
}
return FALSE;
}
#endif
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