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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 "../../../include/fxge/fx_ge.h"
#if _FX_OS_ == _FX_WIN32_DESKTOP_ || _FX_OS_ == _FX_WIN64_DESKTOP_
#include <windows.h>
#include "../../../include/fxge/fx_ge_win32.h"
#include "win32_int.h"
CFX_ByteString CFX_WindowsDIB::GetBitmapInfo(const CFX_DIBitmap* pBitmap)
{
CFX_ByteString result;
int len = sizeof (BITMAPINFOHEADER);
if (pBitmap->GetBPP() == 1 || pBitmap->GetBPP() == 8) {
len += sizeof (DWORD) * (int)(1 << pBitmap->GetBPP());
}
BITMAPINFOHEADER* pbmih = (BITMAPINFOHEADER*)result.GetBuffer(len);
FXSYS_memset(pbmih, 0, sizeof (BITMAPINFOHEADER));
pbmih->biSize = sizeof(BITMAPINFOHEADER);
pbmih->biBitCount = pBitmap->GetBPP();
pbmih->biCompression = BI_RGB;
pbmih->biHeight = -(int)pBitmap->GetHeight();
pbmih->biPlanes = 1;
pbmih->biWidth = pBitmap->GetWidth();
if (pBitmap->GetBPP() == 8) {
FX_DWORD* pPalette = (FX_DWORD*)(pbmih + 1);
if (pBitmap->GetPalette() == NULL) {
for (int i = 0; i < 256; i ++) {
pPalette[i] = i * 0x010101;
}
} else {
for (int i = 0; i < 256; i ++) {
pPalette[i] = pBitmap->GetPalette()[i];
}
}
}
if (pBitmap->GetBPP() == 1) {
FX_DWORD* pPalette = (FX_DWORD*)(pbmih + 1);
if (pBitmap->GetPalette() == NULL) {
pPalette[0] = 0;
pPalette[1] = 0xffffff;
} else {
pPalette[0] = pBitmap->GetPalette()[0];
pPalette[1] = pBitmap->GetPalette()[1];
}
}
result.ReleaseBuffer(len);
return result;
}
CFX_DIBitmap* _FX_WindowsDIB_LoadFromBuf(BITMAPINFO* pbmi, LPVOID pData, FX_BOOL bAlpha)
{
int width = pbmi->bmiHeader.biWidth;
int height = pbmi->bmiHeader.biHeight;
BOOL bBottomUp = TRUE;
if (height < 0) {
height = -height;
bBottomUp = FALSE;
}
int pitch = (width * pbmi->bmiHeader.biBitCount + 31) / 32 * 4;
CFX_DIBitmap* pBitmap = new CFX_DIBitmap;
FXDIB_Format format = bAlpha ? (FXDIB_Format)(pbmi->bmiHeader.biBitCount + 0x200) : (FXDIB_Format)pbmi->bmiHeader.biBitCount;
FX_BOOL ret = pBitmap->Create(width, height, format);
if (!ret) {
delete pBitmap;
return NULL;
}
FXSYS_memcpy(pBitmap->GetBuffer(), pData, pitch * height);
if (bBottomUp) {
uint8_t* temp_buf = FX_Alloc(uint8_t, pitch);
int top = 0, bottom = height - 1;
while (top < bottom) {
FXSYS_memcpy(temp_buf, pBitmap->GetBuffer() + top * pitch, pitch);
FXSYS_memcpy(pBitmap->GetBuffer() + top * pitch, pBitmap->GetBuffer() + bottom * pitch, pitch);
FXSYS_memcpy(pBitmap->GetBuffer() + bottom * pitch, temp_buf, pitch);
top ++;
bottom --;
}
FX_Free(temp_buf);
temp_buf = NULL;
}
if (pbmi->bmiHeader.biBitCount == 1) {
for (int i = 0; i < 2; i ++) {
pBitmap->SetPaletteEntry(i, ((FX_DWORD*)pbmi->bmiColors)[i] | 0xff000000);
}
} else if (pbmi->bmiHeader.biBitCount == 8) {
for (int i = 0; i < 256; i ++) {
pBitmap->SetPaletteEntry(i, ((FX_DWORD*)pbmi->bmiColors)[i] | 0xff000000);
}
}
return pBitmap;
}
CFX_DIBitmap* CFX_WindowsDIB::LoadFromBuf(BITMAPINFO* pbmi, LPVOID pData)
{
return _FX_WindowsDIB_LoadFromBuf(pbmi, pData, FALSE);
}
HBITMAP CFX_WindowsDIB::GetDDBitmap(const CFX_DIBitmap* pBitmap, HDC hDC)
{
CFX_ByteString info = GetBitmapInfo(pBitmap);
HBITMAP hBitmap = NULL;
hBitmap = CreateDIBitmap(hDC, (BITMAPINFOHEADER*)info.c_str(), CBM_INIT,
pBitmap->GetBuffer(), (BITMAPINFO*)info.c_str(), DIB_RGB_COLORS);
return hBitmap;
}
void GetBitmapSize(HBITMAP hBitmap, int& w, int& h)
{
BITMAP bmp;
GetObject(hBitmap, sizeof bmp, &bmp);
w = bmp.bmWidth;
h = bmp.bmHeight;
}
CFX_DIBitmap* CFX_WindowsDIB::LoadFromFile(const FX_WCHAR* filename)
{
CWin32Platform* pPlatform = (CWin32Platform*)CFX_GEModule::Get()->GetPlatformData();
if (pPlatform->m_GdiplusExt.IsAvailable()) {
WINDIB_Open_Args_ args;
args.flags = WINDIB_OPEN_PATHNAME;
args.path_name = filename;
return pPlatform->m_GdiplusExt.LoadDIBitmap(args);
}
HBITMAP hBitmap = (HBITMAP)LoadImageW(NULL, (wchar_t*)filename, IMAGE_BITMAP, 0, 0, LR_LOADFROMFILE);
if (hBitmap == NULL) {
return NULL;
}
HDC hDC = CreateCompatibleDC(NULL);
int width, height;
GetBitmapSize(hBitmap, width, height);
CFX_DIBitmap* pDIBitmap = new CFX_DIBitmap;
if (!pDIBitmap->Create(width, height, FXDIB_Rgb)) {
delete pDIBitmap;
DeleteDC(hDC);
return NULL;
}
CFX_ByteString info = GetBitmapInfo(pDIBitmap);
int ret = GetDIBits(hDC, hBitmap, 0, height, pDIBitmap->GetBuffer(), (BITMAPINFO*)info.c_str(), DIB_RGB_COLORS);
if (!ret) {
if (pDIBitmap) {
delete pDIBitmap;
}
pDIBitmap = NULL;
}
DeleteDC(hDC);
return pDIBitmap;
}
CFX_DIBitmap* CFX_WindowsDIB::LoadDIBitmap(WINDIB_Open_Args_ args)
{
CWin32Platform* pPlatform = (CWin32Platform*)CFX_GEModule::Get()->GetPlatformData();
if (pPlatform->m_GdiplusExt.IsAvailable()) {
return pPlatform->m_GdiplusExt.LoadDIBitmap(args);
} else if (args.flags == WINDIB_OPEN_MEMORY) {
return NULL;
}
HBITMAP hBitmap = (HBITMAP)LoadImageW(NULL, (wchar_t*)args.path_name, IMAGE_BITMAP, 0, 0, LR_LOADFROMFILE);
if (hBitmap == NULL) {
return NULL;
}
HDC hDC = CreateCompatibleDC(NULL);
int width, height;
GetBitmapSize(hBitmap, width, height);
CFX_DIBitmap* pDIBitmap = new CFX_DIBitmap;
if (!pDIBitmap->Create(width, height, FXDIB_Rgb)) {
delete pDIBitmap;
DeleteDC(hDC);
return NULL;
}
CFX_ByteString info = GetBitmapInfo(pDIBitmap);
int ret = GetDIBits(hDC, hBitmap, 0, height, pDIBitmap->GetBuffer(), (BITMAPINFO*)info.c_str(), DIB_RGB_COLORS);
if (!ret) {
if (pDIBitmap) {
delete pDIBitmap;
}
pDIBitmap = NULL;
}
DeleteDC(hDC);
return pDIBitmap;
}
CFX_DIBitmap* CFX_WindowsDIB::LoadFromDDB(HDC hDC, HBITMAP hBitmap, FX_DWORD* pPalette, FX_DWORD palsize)
{
FX_BOOL bCreatedDC = hDC == NULL;
if (hDC == NULL) {
hDC = CreateCompatibleDC(NULL);
}
BITMAPINFOHEADER bmih;
FXSYS_memset(&bmih, 0, sizeof bmih);
bmih.biSize = sizeof bmih;
GetDIBits(hDC, hBitmap, 0, 0, NULL, (BITMAPINFO*)&bmih, DIB_RGB_COLORS);
int width = bmih.biWidth;
int height = abs(bmih.biHeight);
bmih.biHeight = -height;
bmih.biCompression = BI_RGB;
CFX_DIBitmap* pDIBitmap = new CFX_DIBitmap;
int ret = 0;
if (bmih.biBitCount == 1 || bmih.biBitCount == 8) {
int size = sizeof (BITMAPINFOHEADER) + 8;
if (bmih.biBitCount == 8) {
size += sizeof (FX_DWORD) * 254;
}
BITMAPINFO* pbmih = (BITMAPINFO*)FX_Alloc(uint8_t, size);
pbmih->bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
pbmih->bmiHeader.biBitCount = bmih.biBitCount;
pbmih->bmiHeader.biCompression = BI_RGB;
pbmih->bmiHeader.biHeight = -height;
pbmih->bmiHeader.biPlanes = 1;
pbmih->bmiHeader.biWidth = bmih.biWidth;
if (!pDIBitmap->Create(bmih.biWidth, height, bmih.biBitCount == 1 ? FXDIB_1bppRgb : FXDIB_8bppRgb)) {
delete pDIBitmap;
FX_Free(pbmih);
if (bCreatedDC) {
DeleteDC(hDC);
}
return NULL;
}
ret = GetDIBits(hDC, hBitmap, 0, height, pDIBitmap->GetBuffer(), (BITMAPINFO*)pbmih, DIB_RGB_COLORS);
FX_Free(pbmih);
pbmih = NULL;
pDIBitmap->CopyPalette(pPalette, palsize);
} else {
if (bmih.biBitCount <= 24) {
bmih.biBitCount = 24;
} else {
bmih.biBitCount = 32;
}
if (!pDIBitmap->Create(bmih.biWidth, height, bmih.biBitCount == 24 ? FXDIB_Rgb : FXDIB_Rgb32)) {
delete pDIBitmap;
if (bCreatedDC) {
DeleteDC(hDC);
}
return NULL;
}
ret = GetDIBits(hDC, hBitmap, 0, height, pDIBitmap->GetBuffer(), (BITMAPINFO*)&bmih, DIB_RGB_COLORS);
if (ret != 0 && bmih.biBitCount == 32) {
int pitch = pDIBitmap->GetPitch();
for (int row = 0; row < height; row ++) {
uint8_t* dest_scan = (uint8_t*)(pDIBitmap->GetBuffer() + row * pitch);
for (int col = 0; col < width; col++) {
dest_scan[3] = 255;
dest_scan += 4;
}
}
}
}
if (ret == 0) {
if (pDIBitmap) {
delete pDIBitmap;
}
pDIBitmap = NULL;
}
if (bCreatedDC) {
DeleteDC(hDC);
}
return pDIBitmap;
}
CFX_WindowsDIB::CFX_WindowsDIB(HDC hDC, int width, int height)
{
Create(width, height, FXDIB_Rgb, (uint8_t*)1);
BITMAPINFOHEADER bmih;
FXSYS_memset(&bmih, 0, sizeof bmih);
bmih.biSize = sizeof bmih;
bmih.biBitCount = 24;
bmih.biHeight = -height;
bmih.biPlanes = 1;
bmih.biWidth = width;
m_hBitmap = CreateDIBSection(hDC, (BITMAPINFO*)&bmih, DIB_RGB_COLORS, (LPVOID*)&m_pBuffer, NULL, 0);
m_hMemDC = CreateCompatibleDC(hDC);
m_hOldBitmap = (HBITMAP)SelectObject(m_hMemDC, m_hBitmap);
}
CFX_WindowsDIB::~CFX_WindowsDIB()
{
SelectObject(m_hMemDC, m_hOldBitmap);
DeleteDC(m_hMemDC);
DeleteObject(m_hBitmap);
}
void CFX_WindowsDIB::LoadFromDevice(HDC hDC, int left, int top)
{
::BitBlt(m_hMemDC, 0, 0, m_Width, m_Height, hDC, left, top, SRCCOPY);
}
void CFX_WindowsDIB::SetToDevice(HDC hDC, int left, int top)
{
::BitBlt(hDC, left, top, m_Width, m_Height, m_hMemDC, 0, 0, SRCCOPY);
}
#endif
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