mirror of
https://github.com/reactos/reactos.git
synced 2024-07-05 20:25:17 +00:00
3e23cdf9ee
- Display a correct error message on failing to save a file. - Don't confuse the main file info and the non-main file info. - Rename ShowFileLoadError as ShowError, and strengthen and move it to dialogs.cpp. - Add SetFileInfo and InitializeImage helper functions. - Add IDS_SAVEERROR resource string. - Modify SaveDIBToFile, SetBitmapAndInfo, and DoLoadImageFile functions. CORE-18867
518 lines
13 KiB
C++
518 lines
13 KiB
C++
/*
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* PROJECT: PAINT for ReactOS
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* LICENSE: LGPL-2.0-or-later (https://spdx.org/licenses/LGPL-2.0-or-later)
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* PURPOSE: Some DIB related functions
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* COPYRIGHT: Copyright 2015 Benedikt Freisen <b.freisen@gmx.net>
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*/
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#include "precomp.h"
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#include <math.h>
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INT g_fileSize = 0;
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float g_xDpi = 96;
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float g_yDpi = 96;
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SYSTEMTIME g_fileTime;
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/* FUNCTIONS ********************************************************/
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// Convert DPI (dots per inch) into PPCM (pixels per centimeter)
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float PpcmFromDpi(float dpi)
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{
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// 1 DPI is 0.0254 meter. 1 centimeter is 1/100 meter.
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return dpi / (0.0254f * 100.0f);
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}
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HBITMAP
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CreateDIBWithProperties(int width, int height)
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{
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BITMAPINFO bmi;
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ZeroMemory(&bmi, sizeof(BITMAPINFO));
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bmi.bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
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bmi.bmiHeader.biWidth = width;
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bmi.bmiHeader.biHeight = height;
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bmi.bmiHeader.biPlanes = 1;
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bmi.bmiHeader.biBitCount = 24;
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return CreateDIBSection(NULL, &bmi, DIB_RGB_COLORS, NULL, NULL, 0);
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}
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HBITMAP
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CreateMonoBitmap(int width, int height, BOOL bWhite)
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{
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HBITMAP hbm = CreateBitmap(width, height, 1, 1, NULL);
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if (hbm == NULL)
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return NULL;
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if (bWhite)
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{
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HDC hdc = CreateCompatibleDC(NULL);
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HGDIOBJ hbmOld = SelectObject(hdc, hbm);
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RECT rc = { 0, 0, width, height };
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FillRect(hdc, &rc, (HBRUSH)GetStockObject(WHITE_BRUSH));
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SelectObject(hdc, hbmOld);
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DeleteDC(hdc);
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}
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return hbm;
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}
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HBITMAP
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CreateColorDIB(int width, int height, COLORREF rgb)
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{
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HBITMAP ret = CreateDIBWithProperties(width, height);
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if (!ret)
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return NULL;
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if (rgb)
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{
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HDC hdc = CreateCompatibleDC(NULL);
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HGDIOBJ hbmOld = SelectObject(hdc, ret);
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RECT rc;
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SetRect(&rc, 0, 0, width, height);
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HBRUSH hbr = CreateSolidBrush(rgb);
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FillRect(hdc, &rc, hbr);
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DeleteObject(hbr);
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SelectObject(hdc, hbmOld);
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DeleteDC(hdc);
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}
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return ret;
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}
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HBITMAP CopyMonoImage(HBITMAP hbm, INT cx, INT cy)
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{
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BITMAP bm;
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if (!GetObject(hbm, sizeof(bm), &bm))
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return NULL;
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if (cx == 0 || cy == 0)
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{
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cx = bm.bmWidth;
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cy = bm.bmHeight;
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}
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HBITMAP hbmNew = CreateBitmap(cx, cy, 1, 1, NULL);
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if (!hbmNew)
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return NULL;
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HDC hdc1 = CreateCompatibleDC(NULL);
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HDC hdc2 = CreateCompatibleDC(NULL);
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HGDIOBJ hbm1Old = SelectObject(hdc1, hbm);
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HGDIOBJ hbm2Old = SelectObject(hdc2, hbmNew);
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StretchBlt(hdc2, 0, 0, cx, cy, hdc1, 0, 0, bm.bmWidth, bm.bmHeight, SRCCOPY);
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SelectObject(hdc1, hbm1Old);
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SelectObject(hdc2, hbm2Old);
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DeleteDC(hdc1);
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DeleteDC(hdc2);
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return hbmNew;
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}
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HBITMAP CachedBufferDIB(HBITMAP hbm, int minimalWidth, int minimalHeight)
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{
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if (minimalWidth <= 0)
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minimalWidth = 1;
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if (minimalHeight <= 0)
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minimalHeight = 1;
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BITMAP bm;
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if (!GetObject(hbm, sizeof(bm), &bm))
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hbm = NULL;
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if (hbm && minimalWidth <= bm.bmWidth && minimalHeight <= bm.bmHeight)
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return hbm;
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if (hbm)
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DeleteObject(hbm);
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return CreateDIBWithProperties((minimalWidth * 3) / 2, (minimalHeight * 3) / 2);
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}
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int
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GetDIBWidth(HBITMAP hBitmap)
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{
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BITMAP bm;
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GetObject(hBitmap, sizeof(BITMAP), &bm);
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return bm.bmWidth;
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}
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int
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GetDIBHeight(HBITMAP hBitmap)
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{
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BITMAP bm;
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GetObject(hBitmap, sizeof(BITMAP), &bm);
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return bm.bmHeight;
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}
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BOOL SaveDIBToFile(HBITMAP hBitmap, LPCWSTR FileName, BOOL fIsMainFile)
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{
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CImageDx img;
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img.Attach(hBitmap);
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HRESULT hr = img.SaveDx(FileName, GUID_NULL, g_xDpi, g_yDpi);
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img.Detach();
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if (FAILED(hr))
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{
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ShowError(IDS_SAVEERROR, FileName);
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return FALSE;
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}
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if (!fIsMainFile)
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return TRUE;
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WIN32_FIND_DATAW find;
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HANDLE hFind = ::FindFirstFileW(FileName, &find);
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if (hFind == INVALID_HANDLE_VALUE)
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{
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ShowError(IDS_SAVEERROR, FileName);
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return FALSE;
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}
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::FindClose(hFind);
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SetFileInfo(FileName, &find, TRUE);
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g_imageSaved = TRUE;
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return TRUE;
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}
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void SetFileInfo(LPCWSTR name, LPWIN32_FIND_DATAW pFound, BOOL isAFile)
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{
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// update file time and size
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if (pFound)
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{
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FILETIME ft;
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::FileTimeToLocalFileTime(&pFound->ftLastWriteTime, &ft);
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::FileTimeToSystemTime(&ft, &g_fileTime);
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g_fileSize = pFound->nFileSizeLow;
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}
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else
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{
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ZeroMemory(&g_fileTime, sizeof(g_fileTime));
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g_fileSize = 0;
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}
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// update g_szFileName
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if (name && name[0])
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{
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CStringW strName = name;
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::GetFullPathNameW(strName, _countof(g_szFileName), g_szFileName, NULL);
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// The following code won't work correctly when (name == g_szFileName):
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// ::GetFullPathNameW(name, _countof(g_szFileName), g_szFileName, NULL);
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}
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else
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{
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::LoadStringW(g_hinstExe, IDS_DEFAULTFILENAME, g_szFileName, _countof(g_szFileName));
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}
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// set title
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CString strTitle;
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strTitle.Format(IDS_WINDOWTITLE, PathFindFileName(g_szFileName));
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mainWindow.SetWindowText(strTitle);
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// update file info and recent
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g_isAFile = isAFile;
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if (g_isAFile)
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registrySettings.SetMostRecentFile(g_szFileName);
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g_imageSaved = TRUE;
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}
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HBITMAP InitializeImage(LPCWSTR name, LPWIN32_FIND_DATAW pFound, BOOL isFile)
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{
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COLORREF white = RGB(255, 255, 255);
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HBITMAP hBitmap = CreateColorDIB(registrySettings.BMPWidth, registrySettings.BMPHeight, white);
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if (hBitmap == NULL)
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return NULL;
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HDC hScreenDC = ::GetDC(NULL);
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g_xDpi = ::GetDeviceCaps(hScreenDC, LOGPIXELSX);
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g_yDpi = ::GetDeviceCaps(hScreenDC, LOGPIXELSY);
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::ReleaseDC(NULL, hScreenDC);
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return SetBitmapAndInfo(hBitmap, name, pFound, isFile);
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}
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HBITMAP SetBitmapAndInfo(HBITMAP hBitmap, LPCWSTR name, LPWIN32_FIND_DATAW pFound, BOOL isFile)
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{
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// update image
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imageModel.PushImageForUndo(hBitmap);
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imageModel.ClearHistory();
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SetFileInfo(name, pFound, isFile);
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g_imageSaved = TRUE;
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return hBitmap;
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}
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HBITMAP DoLoadImageFile(HWND hwnd, LPCWSTR name, BOOL fIsMainFile)
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{
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// find the file
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WIN32_FIND_DATA find;
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HANDLE hFind = ::FindFirstFileW(name, &find);
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if (hFind == INVALID_HANDLE_VALUE) // does not exist
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{
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ShowError(IDS_LOADERRORTEXT, name);
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return NULL;
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}
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::FindClose(hFind);
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// is file empty?
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if (find.nFileSizeLow == 0 && find.nFileSizeHigh == 0)
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{
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if (fIsMainFile)
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return InitializeImage(name, &find, TRUE);
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}
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// load the image
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CImageDx img;
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float xDpi, yDpi;
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HRESULT hr = img.LoadDx(name, &xDpi, &yDpi);
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if (FAILED(hr))
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{
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ShowError(IDS_LOADERRORTEXT, name);
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return NULL;
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}
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HBITMAP hBitmap = img.Detach();
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if (!fIsMainFile)
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return hBitmap;
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g_xDpi = xDpi;
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g_yDpi = yDpi;
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if (g_xDpi <= 0)
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g_xDpi = 96;
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if (g_yDpi <= 0)
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g_yDpi = 96;
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SetBitmapAndInfo(hBitmap, name, &find, TRUE);
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return hBitmap;
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}
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HBITMAP Rotate90DegreeBlt(HDC hDC1, INT cx, INT cy, BOOL bRight, BOOL bMono)
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{
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HBITMAP hbm2;
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if (bMono)
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hbm2 = ::CreateBitmap(cy, cx, 1, 1, NULL);
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else
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hbm2 = CreateDIBWithProperties(cy, cx);
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if (!hbm2)
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return NULL;
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HDC hDC2 = CreateCompatibleDC(NULL);
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HGDIOBJ hbm2Old = SelectObject(hDC2, hbm2);
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if (bRight)
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{
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for (INT y = 0; y < cy; ++y)
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{
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for (INT x = 0; x < cx; ++x)
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{
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COLORREF rgb = GetPixel(hDC1, x, y);
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SetPixelV(hDC2, cy - (y + 1), x, rgb);
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}
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}
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}
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else
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{
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for (INT y = 0; y < cy; ++y)
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{
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for (INT x = 0; x < cx; ++x)
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{
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COLORREF rgb = GetPixel(hDC1, x, y);
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SetPixelV(hDC2, y, cx - (x + 1), rgb);
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}
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}
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}
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SelectObject(hDC2, hbm2Old);
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DeleteDC(hDC2);
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return hbm2;
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}
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#ifndef M_PI
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#define M_PI 3.14159265
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#endif
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HBITMAP SkewDIB(HDC hDC1, HBITMAP hbm, INT nDegree, BOOL bVertical, BOOL bMono)
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{
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if (nDegree == 0)
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return CopyDIBImage(hbm);
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const double eTan = tan(abs(nDegree) * M_PI / 180);
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BITMAP bm;
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GetObjectW(hbm, sizeof(bm), &bm);
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INT cx = bm.bmWidth, cy = bm.bmHeight, dx = 0, dy = 0;
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if (bVertical)
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dy = INT(cx * eTan);
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else
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dx = INT(cy * eTan);
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if (dx == 0 && dy == 0)
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return CopyDIBImage(hbm);
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HBITMAP hbmNew;
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if (bMono)
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hbmNew = CreateMonoBitmap(cx + dx, cy + dy, FALSE);
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else
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hbmNew = CreateColorDIB(cx + dx, cy + dy, RGB(255, 255, 255));
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if (!hbmNew)
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return NULL;
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HDC hDC2 = CreateCompatibleDC(NULL);
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HGDIOBJ hbm2Old = SelectObject(hDC2, hbmNew);
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if (bVertical)
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{
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for (INT x = 0; x < cx; ++x)
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{
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INT delta = INT(x * eTan);
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if (nDegree > 0)
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BitBlt(hDC2, x, (dy - delta), 1, cy, hDC1, x, 0, SRCCOPY);
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else
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BitBlt(hDC2, x, delta, 1, cy, hDC1, x, 0, SRCCOPY);
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}
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}
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else
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{
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for (INT y = 0; y < cy; ++y)
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{
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INT delta = INT(y * eTan);
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if (nDegree > 0)
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BitBlt(hDC2, (dx - delta), y, cx, 1, hDC1, 0, y, SRCCOPY);
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else
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BitBlt(hDC2, delta, y, cx, 1, hDC1, 0, y, SRCCOPY);
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}
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}
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SelectObject(hDC2, hbm2Old);
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DeleteDC(hDC2);
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return hbmNew;
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}
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struct BITMAPINFODX : BITMAPINFO
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{
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RGBQUAD bmiColorsAdditional[256 - 1];
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};
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HGLOBAL BitmapToClipboardDIB(HBITMAP hBitmap)
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{
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BITMAP bm;
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if (!GetObject(hBitmap, sizeof(BITMAP), &bm))
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return NULL;
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BITMAPINFODX bmi;
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ZeroMemory(&bmi, sizeof(bmi));
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bmi.bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
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bmi.bmiHeader.biWidth = bm.bmWidth;
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bmi.bmiHeader.biHeight = bm.bmHeight;
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bmi.bmiHeader.biPlanes = 1;
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bmi.bmiHeader.biBitCount = bm.bmBitsPixel;
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bmi.bmiHeader.biCompression = BI_RGB;
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bmi.bmiHeader.biSizeImage = bm.bmWidthBytes * bm.bmHeight;
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INT cColors;
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if (bm.bmBitsPixel < 16)
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cColors = 1 << bm.bmBitsPixel;
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else
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cColors = 0;
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HDC hDC = CreateCompatibleDC(NULL);
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if (cColors)
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{
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HGDIOBJ hbmOld = SelectObject(hDC, hBitmap);
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cColors = GetDIBColorTable(hDC, 0, cColors, bmi.bmiColors);
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SelectObject(hDC, hbmOld);
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}
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DWORD cbColors = cColors * sizeof(RGBQUAD);
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DWORD dwSize = sizeof(BITMAPINFOHEADER) + cbColors + bmi.bmiHeader.biSizeImage;
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HGLOBAL hGlobal = GlobalAlloc(GHND | GMEM_SHARE, dwSize);
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if (hGlobal)
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{
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LPBYTE pb = (LPBYTE)GlobalLock(hGlobal);
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if (pb)
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{
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CopyMemory(pb, &bmi, sizeof(BITMAPINFOHEADER));
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pb += sizeof(BITMAPINFOHEADER);
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CopyMemory(pb, bmi.bmiColors, cbColors);
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pb += cbColors;
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GetDIBits(hDC, hBitmap, 0, bm.bmHeight, pb, &bmi, DIB_RGB_COLORS);
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GlobalUnlock(hGlobal);
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}
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else
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{
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GlobalFree(hGlobal);
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hGlobal = NULL;
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}
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}
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DeleteDC(hDC);
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return hGlobal;
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}
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HBITMAP BitmapFromClipboardDIB(HGLOBAL hGlobal)
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{
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LPBYTE pb = (LPBYTE)GlobalLock(hGlobal);
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if (!pb)
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return NULL;
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LPBITMAPINFO pbmi = (LPBITMAPINFO)pb;
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pb += pbmi->bmiHeader.biSize;
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INT cColors = 0, cbColors = 0;
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if (pbmi->bmiHeader.biSize == sizeof(BITMAPCOREHEADER))
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{
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LPBITMAPCOREINFO pbmci = (LPBITMAPCOREINFO)pbmi;
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WORD BitCount = pbmci->bmciHeader.bcBitCount;
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if (BitCount < 16)
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{
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cColors = (1 << BitCount);
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cbColors = cColors * sizeof(RGBTRIPLE);
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pb += cbColors;
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}
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}
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else if (pbmi->bmiHeader.biSize >= sizeof(BITMAPINFOHEADER))
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{
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WORD BitCount = pbmi->bmiHeader.biBitCount;
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if (BitCount < 16)
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{
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cColors = (1 << BitCount);
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cbColors = cColors * sizeof(RGBQUAD);
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pb += cbColors;
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}
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}
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HDC hDC = CreateCompatibleDC(NULL);
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HBITMAP hBitmap = CreateDIBSection(hDC, pbmi, DIB_RGB_COLORS, NULL, NULL, 0);
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if (hBitmap)
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{
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SetDIBits(hDC, hBitmap, 0, labs(pbmi->bmiHeader.biHeight), pb, pbmi, DIB_RGB_COLORS);
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}
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DeleteDC(hDC);
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GlobalUnlock(hGlobal);
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return hBitmap;
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}
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HBITMAP BitmapFromHEMF(HENHMETAFILE hEMF)
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{
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ENHMETAHEADER header;
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if (!GetEnhMetaFileHeader(hEMF, sizeof(header), &header))
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return NULL;
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CRect rc = *(LPRECT)&header.rclBounds;
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INT cx = rc.Width(), cy = rc.Height();
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HBITMAP hbm = CreateColorDIB(cx, cy, RGB(255, 255, 255));
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if (!hbm)
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return NULL;
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HDC hDC = CreateCompatibleDC(NULL);
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HGDIOBJ hbmOld = SelectObject(hDC, hbm);
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PlayEnhMetaFile(hDC, hEMF, &rc);
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SelectObject(hDC, hbmOld);
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DeleteDC(hDC);
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return hbm;
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}
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