1 // Copyright 2014 PDFium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4 
5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
6 
7 #include "../../../include/fxge/fx_ge.h"
8 #if _FX_OS_ == _FX_WIN32_DESKTOP_ ||  _FX_OS_ == _FX_WIN64_
9 #include <windows.h>
10 #include "../../../include/fxge/fx_ge_win32.h"
11 #include "win32_int.h"
GetBitmapInfo(const CFX_DIBitmap * pBitmap)12 CFX_ByteString CFX_WindowsDIB::GetBitmapInfo(const CFX_DIBitmap* pBitmap)
13 {
14     CFX_ByteString result;
15     int len = sizeof (BITMAPINFOHEADER);
16     if (pBitmap->GetBPP() == 1 || pBitmap->GetBPP() == 8) {
17         len += sizeof (DWORD) * (int)(1 << pBitmap->GetBPP());
18     }
19     BITMAPINFOHEADER* pbmih = (BITMAPINFOHEADER*)result.GetBuffer(len);
20     FXSYS_memset32(pbmih, 0, sizeof (BITMAPINFOHEADER));
21     pbmih->biSize = sizeof(BITMAPINFOHEADER);
22     pbmih->biBitCount = pBitmap->GetBPP();
23     pbmih->biCompression = BI_RGB;
24     pbmih->biHeight = -(int)pBitmap->GetHeight();
25     pbmih->biPlanes = 1;
26     pbmih->biWidth = pBitmap->GetWidth();
27     if (pBitmap->GetBPP() == 8) {
28         FX_DWORD* pPalette = (FX_DWORD*)(pbmih + 1);
29         if (pBitmap->GetPalette() == NULL) {
30             for (int i = 0; i < 256; i ++) {
31                 pPalette[i] = i * 0x010101;
32             }
33         } else {
34             for (int i = 0; i < 256; i ++) {
35                 pPalette[i] = pBitmap->GetPalette()[i];
36             }
37         }
38     }
39     if (pBitmap->GetBPP() == 1) {
40         FX_DWORD* pPalette = (FX_DWORD*)(pbmih + 1);
41         if (pBitmap->GetPalette() == NULL) {
42             pPalette[0] = 0;
43             pPalette[1] = 0xffffff;
44         } else {
45             pPalette[0] = pBitmap->GetPalette()[0];
46             pPalette[1] = pBitmap->GetPalette()[1];
47         }
48     }
49     result.ReleaseBuffer(len);
50     return result;
51 }
_FX_WindowsDIB_LoadFromBuf(BITMAPINFO * pbmi,LPVOID pData,FX_BOOL bAlpha)52 CFX_DIBitmap* _FX_WindowsDIB_LoadFromBuf(BITMAPINFO* pbmi, LPVOID pData, FX_BOOL bAlpha)
53 {
54     int width = pbmi->bmiHeader.biWidth;
55     int height = pbmi->bmiHeader.biHeight;
56     BOOL bBottomUp = TRUE;
57     if (height < 0) {
58         height = -height;
59         bBottomUp = FALSE;
60     }
61     int pitch = (width * pbmi->bmiHeader.biBitCount + 31) / 32 * 4;
62     CFX_DIBitmap* pBitmap = new CFX_DIBitmap;
63     FXDIB_Format format = bAlpha ? (FXDIB_Format)(pbmi->bmiHeader.biBitCount + 0x200) : (FXDIB_Format)pbmi->bmiHeader.biBitCount;
64     FX_BOOL ret = pBitmap->Create(width, height, format);
65     if (!ret) {
66         delete pBitmap;
67         return NULL;
68     }
69     FXSYS_memcpy32(pBitmap->GetBuffer(), pData, pitch * height);
70     if (bBottomUp) {
71         FX_LPBYTE temp_buf = FX_Alloc(FX_BYTE, pitch);
72         int top = 0, bottom = height - 1;
73         while (top < bottom) {
74             FXSYS_memcpy32(temp_buf, pBitmap->GetBuffer() + top * pitch, pitch);
75             FXSYS_memcpy32(pBitmap->GetBuffer() + top * pitch, pBitmap->GetBuffer() + bottom * pitch, pitch);
76             FXSYS_memcpy32(pBitmap->GetBuffer() + bottom * pitch, temp_buf, pitch);
77             top ++;
78             bottom --;
79         }
80         FX_Free(temp_buf);
81         temp_buf = NULL;
82     }
83     if (pbmi->bmiHeader.biBitCount == 1) {
84         for (int i = 0; i < 2; i ++) {
85             pBitmap->SetPaletteEntry(i, ((FX_DWORD*)pbmi->bmiColors)[i] | 0xff000000);
86         }
87     } else if (pbmi->bmiHeader.biBitCount == 8) {
88         for (int i = 0; i < 256; i ++) {
89             pBitmap->SetPaletteEntry(i, ((FX_DWORD*)pbmi->bmiColors)[i] | 0xff000000);
90         }
91     }
92     return pBitmap;
93 }
LoadFromBuf(BITMAPINFO * pbmi,LPVOID pData)94 CFX_DIBitmap* CFX_WindowsDIB::LoadFromBuf(BITMAPINFO* pbmi, LPVOID pData)
95 {
96     return _FX_WindowsDIB_LoadFromBuf(pbmi, pData, FALSE);
97 }
GetDDBitmap(const CFX_DIBitmap * pBitmap,HDC hDC)98 HBITMAP	CFX_WindowsDIB::GetDDBitmap(const CFX_DIBitmap* pBitmap, HDC hDC)
99 {
100     CFX_ByteString info = GetBitmapInfo(pBitmap);
101     HBITMAP hBitmap = NULL;
102     hBitmap = CreateDIBitmap(hDC, (BITMAPINFOHEADER*)info.c_str(), CBM_INIT,
103         pBitmap->GetBuffer(), (BITMAPINFO*)info.c_str(), DIB_RGB_COLORS);
104     return hBitmap;
105 }
GetBitmapSize(HBITMAP hBitmap,int & w,int & h)106 void GetBitmapSize(HBITMAP hBitmap, int& w, int& h)
107 {
108     BITMAP bmp;
109     GetObject(hBitmap, sizeof bmp, &bmp);
110     w = bmp.bmWidth;
111     h = bmp.bmHeight;
112 }
LoadFromFile(FX_LPCWSTR filename)113 CFX_DIBitmap* CFX_WindowsDIB::LoadFromFile(FX_LPCWSTR filename)
114 {
115     CWin32Platform* pPlatform = (CWin32Platform*)CFX_GEModule::Get()->GetPlatformData();
116     if (pPlatform->m_GdiplusExt.IsAvailable()) {
117         WINDIB_Open_Args_ args;
118         args.flags = WINDIB_OPEN_PATHNAME;
119         args.path_name = filename;
120         return pPlatform->m_GdiplusExt.LoadDIBitmap(args);
121     }
122     HBITMAP hBitmap = (HBITMAP)LoadImageW(NULL, (wchar_t*)filename, IMAGE_BITMAP, 0, 0, LR_LOADFROMFILE);
123     if (hBitmap == NULL) {
124         return NULL;
125     }
126     HDC hDC = CreateCompatibleDC(NULL);
127     int width, height;
128     GetBitmapSize(hBitmap, width, height);
129     CFX_DIBitmap* pDIBitmap = new CFX_DIBitmap;
130     if (!pDIBitmap->Create(width, height, FXDIB_Rgb)) {
131         delete pDIBitmap;
132         DeleteDC(hDC);
133         return NULL;
134     }
135     CFX_ByteString info = GetBitmapInfo(pDIBitmap);
136     int ret = GetDIBits(hDC, hBitmap, 0, height, pDIBitmap->GetBuffer(), (BITMAPINFO*)info.c_str(), DIB_RGB_COLORS);
137     if (!ret) {
138         if (pDIBitmap) {
139             delete pDIBitmap;
140         }
141         pDIBitmap = NULL;
142     }
143     DeleteDC(hDC);
144     return pDIBitmap;
145 }
LoadDIBitmap(WINDIB_Open_Args_ args)146 CFX_DIBitmap* CFX_WindowsDIB::LoadDIBitmap(WINDIB_Open_Args_ args)
147 {
148     CWin32Platform* pPlatform = (CWin32Platform*)CFX_GEModule::Get()->GetPlatformData();
149     if (pPlatform->m_GdiplusExt.IsAvailable()) {
150         return pPlatform->m_GdiplusExt.LoadDIBitmap(args);
151     } else if (args.flags == WINDIB_OPEN_MEMORY) {
152         return NULL;
153     }
154     HBITMAP hBitmap = (HBITMAP)LoadImageW(NULL, (wchar_t*)args.path_name, IMAGE_BITMAP, 0, 0, LR_LOADFROMFILE);
155     if (hBitmap == NULL) {
156         return NULL;
157     }
158     HDC hDC = CreateCompatibleDC(NULL);
159     int width, height;
160     GetBitmapSize(hBitmap, width, height);
161     CFX_DIBitmap* pDIBitmap = new CFX_DIBitmap;
162     if (!pDIBitmap->Create(width, height, FXDIB_Rgb)) {
163         delete pDIBitmap;
164         DeleteDC(hDC);
165         return NULL;
166     }
167     CFX_ByteString info = GetBitmapInfo(pDIBitmap);
168     int ret = GetDIBits(hDC, hBitmap, 0, height, pDIBitmap->GetBuffer(), (BITMAPINFO*)info.c_str(), DIB_RGB_COLORS);
169     if (!ret) {
170         if (pDIBitmap) {
171             delete pDIBitmap;
172         }
173         pDIBitmap = NULL;
174     }
175     DeleteDC(hDC);
176     return pDIBitmap;
177 }
LoadFromDDB(HDC hDC,HBITMAP hBitmap,FX_DWORD * pPalette,FX_DWORD palsize)178 CFX_DIBitmap* CFX_WindowsDIB::LoadFromDDB(HDC hDC, HBITMAP hBitmap, FX_DWORD* pPalette, FX_DWORD palsize)
179 {
180     FX_BOOL bCreatedDC = hDC == NULL;
181     if (hDC == NULL) {
182         hDC = CreateCompatibleDC(NULL);
183     }
184     BITMAPINFOHEADER bmih;
185     FXSYS_memset32(&bmih, 0, sizeof bmih);
186     bmih.biSize = sizeof bmih;
187     GetDIBits(hDC, hBitmap, 0, 0, NULL, (BITMAPINFO*)&bmih, DIB_RGB_COLORS);
188     int width = bmih.biWidth;
189     int height = abs(bmih.biHeight);
190     bmih.biHeight = -height;
191     bmih.biCompression = BI_RGB;
192     CFX_DIBitmap* pDIBitmap = new CFX_DIBitmap;
193     int ret = 0;
194     if (bmih.biBitCount == 1 || bmih.biBitCount == 8) {
195         int size = sizeof (BITMAPINFOHEADER) + 8;
196         if (bmih.biBitCount == 8) {
197             size += sizeof (FX_DWORD) * 254;
198         }
199         BITMAPINFO* pbmih = (BITMAPINFO*)FX_Alloc(FX_BYTE, size);
200         pbmih->bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
201         pbmih->bmiHeader.biBitCount = bmih.biBitCount;
202         pbmih->bmiHeader.biCompression = BI_RGB;
203         pbmih->bmiHeader.biHeight = -height;
204         pbmih->bmiHeader.biPlanes = 1;
205         pbmih->bmiHeader.biWidth = bmih.biWidth;
206         if (!pDIBitmap->Create(bmih.biWidth, height, bmih.biBitCount == 1 ? FXDIB_1bppRgb : FXDIB_8bppRgb)) {
207             delete pDIBitmap;
208             FX_Free(pbmih);
209             if (bCreatedDC) {
210                 DeleteDC(hDC);
211             }
212             return NULL;
213         }
214         ret = GetDIBits(hDC, hBitmap, 0, height, pDIBitmap->GetBuffer(), (BITMAPINFO*)pbmih, DIB_RGB_COLORS);
215         FX_Free(pbmih);
216         pbmih = NULL;
217         pDIBitmap->CopyPalette(pPalette, palsize);
218     } else {
219         if (bmih.biBitCount <= 24) {
220             bmih.biBitCount = 24;
221         } else {
222             bmih.biBitCount = 32;
223         }
224         if (!pDIBitmap->Create(bmih.biWidth, height, bmih.biBitCount == 24 ? FXDIB_Rgb : FXDIB_Rgb32)) {
225             delete pDIBitmap;
226             if (bCreatedDC) {
227                 DeleteDC(hDC);
228             }
229             return NULL;
230         }
231         ret = GetDIBits(hDC, hBitmap, 0, height, pDIBitmap->GetBuffer(), (BITMAPINFO*)&bmih, DIB_RGB_COLORS);
232         if (ret != 0 && bmih.biBitCount == 32) {
233             int pitch = pDIBitmap->GetPitch();
234             for (int row = 0; row < height; row ++) {
235                 FX_BYTE* dest_scan = (FX_BYTE*)(pDIBitmap->GetBuffer() + row * pitch);
236                 for (int col = 0; col < width; col++) {
237                     dest_scan[3] = 255;
238                     dest_scan += 4;
239                 }
240             }
241         }
242     }
243     if (ret == 0) {
244         if (pDIBitmap) {
245             delete pDIBitmap;
246         }
247         pDIBitmap = NULL;
248     }
249     if (bCreatedDC) {
250         DeleteDC(hDC);
251     }
252     return pDIBitmap;
253 }
CFX_WindowsDIB(HDC hDC,int width,int height)254 CFX_WindowsDIB::CFX_WindowsDIB(HDC hDC, int width, int height)
255 {
256     Create(width, height, FXDIB_Rgb, (FX_LPBYTE)1);
257     BITMAPINFOHEADER bmih;
258     FXSYS_memset32(&bmih, 0, sizeof bmih);
259     bmih.biSize = sizeof bmih;
260     bmih.biBitCount = 24;
261     bmih.biHeight = -height;
262     bmih.biPlanes = 1;
263     bmih.biWidth = width;
264     m_hBitmap = CreateDIBSection(hDC, (BITMAPINFO*)&bmih, DIB_RGB_COLORS, (LPVOID*)&m_pBuffer, NULL, 0);
265     m_hMemDC = CreateCompatibleDC(hDC);
266     m_hOldBitmap = (HBITMAP)SelectObject(m_hMemDC, m_hBitmap);
267 }
~CFX_WindowsDIB()268 CFX_WindowsDIB::~CFX_WindowsDIB()
269 {
270     SelectObject(m_hMemDC, m_hOldBitmap);
271     DeleteDC(m_hMemDC);
272     DeleteObject(m_hBitmap);
273 }
LoadFromDevice(HDC hDC,int left,int top)274 void CFX_WindowsDIB::LoadFromDevice(HDC hDC, int left, int top)
275 {
276     ::BitBlt(m_hMemDC, 0, 0, m_Width, m_Height, hDC, left, top, SRCCOPY);
277 }
SetToDevice(HDC hDC,int left,int top)278 void CFX_WindowsDIB::SetToDevice(HDC hDC, int left, int top)
279 {
280     ::BitBlt(hDC, left, top, m_Width, m_Height, m_hMemDC, 0, 0, SRCCOPY);
281 }
282 #endif
283