gfx/src/thebes/nsSystemFontsWin.cpp

   1 /* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /* ***** BEGIN LICENSE BLOCK *****
   3  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
   4  *
   5  * The contents of this file are subject to the Mozilla Public License Version
   6  * 1.1 (the "License"); you may not use this file except in compliance with
   7  * the License. You may obtain a copy of the License at
   8  * http://www.mozilla.org/MPL/
   9  *
  10  * Software distributed under the License is distributed on an "AS IS" basis,
  11  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
  12  * for the specific language governing rights and limitations under the
  13  * License.
  14  *
  15  * The Original Code is thebes gfx
  16  *
  17  * The Initial Developer of the Original Code is mozilla.org.
  18  * Portions created by the Initial Developer are Copyright (C) 2005
  19  * the Initial Developer. All Rights Reserved.
  20  *
  21  * Contributor(s):
  22  *   Vladimir Vukicevic <vladimir@pobox.com>
  23  *   Stuart Parmenter <pavlov@pavlov.net>
  24  *
  25  * Alternatively, the contents of this file may be used under the terms of
  26  * either the GNU General Public License Version 2 or later (the "GPL"), or
  27  * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
  28  * in which case the provisions of the GPL or the LGPL are applicable instead
  29  * of those above. If you wish to allow use of your version of this file only
  30  * under the terms of either the GPL or the LGPL, and not to allow others to
  31  * use your version of this file under the terms of the MPL, indicate your
  32  * decision by deleting the provisions above and replace them with the notice
  33  * and other provisions required by the GPL or the LGPL. If you do not delete
  34  * the provisions above, a recipient may use your version of this file under
  35  * the terms of any one of the MPL, the GPL or the LGPL.
  36  *
  37  * ***** END LICENSE BLOCK ***** */
  38
  39 #include "nsIRenderingContext.h"
  40
  41 #include "gfxWindowsSurface.h"
  42
  43 #include "nsSystemFontsWin.h"
  44
  45
  46 nsresult nsSystemFontsWin::CopyLogFontToNSFont(HDC* aHDC, const LOGFONTW* ptrLogFont,
  47                                                nsString *aFontName,
  48                                                gfxFontStyle *aFontStyle) const
  49 {
  50   PRUnichar name[LF_FACESIZE];
  51   name[0] = 0;
  52   memcpy(name, ptrLogFont->lfFaceName, LF_FACESIZE*sizeof(PRUnichar));
  53   *aFontName = name;
  54
  55   // Do Style
  56   aFontStyle->style = FONT_STYLE_NORMAL;
  57   if (ptrLogFont->lfItalic)
  58   {
  59     aFontStyle->style = FONT_STYLE_ITALIC;
  60   }
  61   // XXX What about oblique?
  62
  63   // Do Weight
  64   aFontStyle->weight = (ptrLogFont->lfWeight == FW_BOLD ?
  65             FONT_WEIGHT_BOLD : FONT_WEIGHT_NORMAL);
  66
  67   // XXX mPixelScale is currently hardcoded to 1 in thebes gfx...
  68   float mPixelScale = 1.0f;
  69   // Do Point Size
  70   //
  71   // The lfHeight is in pixel and it needs to be adjusted for the
  72   // device it will be "displayed" on
  73   // Screens and Printers will differe in DPI
  74   //
  75   // So this accounts for the difference in the DeviceContexts
  76   // The mPixelScale will be a "1" for the screen and could be
  77   // any value when going to a printer, for example mPixleScale is
  78   // 6.25 when going to a 600dpi printer.
  79   // round, but take into account whether it is negative
  80   float pixelHeight = -ptrLogFont->lfHeight;
  81   if (pixelHeight < 0) {
  82     HFONT hFont = ::CreateFontIndirectW(ptrLogFont);
  83     if (!hFont)
  84       return NS_ERROR_OUT_OF_MEMORY;
  85     HGDIOBJ hObject = ::SelectObject(*aHDC, hFont);
  86     TEXTMETRIC tm;
  87     ::GetTextMetrics(*aHDC, &tm);
  88     ::SelectObject(*aHDC, hObject);
  89     ::DeleteObject(hFont);
  90     pixelHeight = tm.tmAscent;
  91   }
  92
  93   pixelHeight *= mPixelScale;
  94
  95   // we have problem on Simplified Chinese system because the system
  96   // report the default font size is 8 points. but if we use 8, the text
  97   // display very ugly. force it to be at 9 points (12 pixels) on that
  98   // system (cp936), but leave other sizes alone.
  99   if ((pixelHeight < 12) &&
 100       (936 == ::GetACP()))
 101     pixelHeight = 12;
 102
 103   aFontStyle->size = pixelHeight;
 104   return NS_OK;
 105 }
 106
 107 nsresult nsSystemFontsWin::GetSysFontInfo(HDC aHDC, nsSystemFontID anID,
 108                                           nsString *aFontName,
 109                                           gfxFontStyle *aFontStyle) const
 110 {
 111   HGDIOBJ hGDI;
 112
 113   LOGFONTW logFont;
 114   LOGFONTW* ptrLogFont = NULL;
 115
 116 #ifdef WINCE
 117   hGDI = ::GetStockObject(SYSTEM_FONT);
 118   if (hGDI == NULL)
 119     return NS_ERROR_UNEXPECTED;
 120
 121   if (::GetObjectW(hGDI, sizeof(logFont), &logFont) > 0)
 122     ptrLogFont = &logFont;
 123 #else
 124
 125   NONCLIENTMETRICSW ncm;
 126
 127   BOOL status;
 128   if (anID == eSystemFont_Icon)
 129   {
 130     status = ::SystemParametersInfoW(SPI_GETICONTITLELOGFONT,
 131                                      sizeof(logFont),
 132                                      (PVOID)&logFont,
 133                                      0);
 134   }
 135   else
 136   {
 137     ncm.cbSize = sizeof(NONCLIENTMETRICSW);
 138     status = ::SystemParametersInfoW(SPI_GETNONCLIENTMETRICS,
 139                                      sizeof(ncm),
 140                                      (PVOID)&ncm,
 141                                      0);
 142   }
 143
 144   if (!status)
 145   {
 146     return NS_ERROR_FAILURE;
 147   }
 148
 149   switch (anID)
 150   {
 151     // Caption in CSS is NOT the same as Caption on Windows
 152     //case eSystemFont_Caption:
 153     //  ptrLogFont = &ncm.lfCaptionFont;
 154     //  break;
 155
 156     case eSystemFont_Icon:
 157       ptrLogFont = &logFont;
 158       break;
 159
 160     case eSystemFont_Menu:
 161       ptrLogFont = &ncm.lfMenuFont;
 162       break;
 163
 164     case eSystemFont_MessageBox:
 165       ptrLogFont = &ncm.lfMessageFont;
 166       break;
 167
 168     case eSystemFont_SmallCaption:
 169       ptrLogFont = &ncm.lfSmCaptionFont;
 170       break;
 171
 172     case eSystemFont_StatusBar:
 173     case eSystemFont_Tooltips:
 174       ptrLogFont = &ncm.lfStatusFont;
 175       break;
 176
 177     case eSystemFont_Widget:
 178
 179     case eSystemFont_Window:      // css3
 180     case eSystemFont_Document:
 181     case eSystemFont_Workspace:
 182     case eSystemFont_Desktop:
 183     case eSystemFont_Info:
 184     case eSystemFont_Dialog:
 185     case eSystemFont_Button:
 186     case eSystemFont_PullDownMenu:
 187     case eSystemFont_List:
 188     case eSystemFont_Field:
 189     case eSystemFont_Caption:
 190       hGDI = ::GetStockObject(DEFAULT_GUI_FONT);
 191       if (hGDI != NULL)
 192       {
 193         if (::GetObjectW(hGDI, sizeof(logFont), &logFont) > 0)
 194         {
 195           ptrLogFont = &logFont;
 196         }
 197       }
 198       break;
 199   } // switch
 200
 201 #endif // WINCE
 202
 203   if (nsnull == ptrLogFont)
 204   {
 205     return NS_ERROR_FAILURE;
 206   }
 207
 208   aFontStyle->systemFont = PR_TRUE;
 209
 210   return CopyLogFontToNSFont(&aHDC, ptrLogFont, aFontName, aFontStyle);
 211 }
 212
 213 nsresult nsSystemFontsWin::GetSystemFont(nsSystemFontID anID,
 214                                          nsString *aFontName,
 215                                          gfxFontStyle *aFontStyle) const
 216 {
 217   nsresult status = NS_OK;
 218
 219   switch (anID) {
 220     case eSystemFont_Caption:
 221     case eSystemFont_Icon:
 222     case eSystemFont_Menu:
 223     case eSystemFont_MessageBox:
 224     case eSystemFont_SmallCaption:
 225     case eSystemFont_StatusBar:
 226     case eSystemFont_Tooltips:
 227     case eSystemFont_Widget:
 228
 229     case eSystemFont_Window:      // css3
 230     case eSystemFont_Document:
 231     case eSystemFont_Workspace:
 232     case eSystemFont_Desktop:
 233     case eSystemFont_Info:
 234     case eSystemFont_Dialog:
 235     case eSystemFont_Button:
 236     case eSystemFont_PullDownMenu:
 237     case eSystemFont_List:
 238     case eSystemFont_Field:
 239     {
 240       HWND hwnd = nsnull;
 241       HDC tdc = GetDC(hwnd);
 242
 243       status = GetSysFontInfo(tdc, anID, aFontName, aFontStyle);
 244
 245       ReleaseDC(hwnd, tdc);
 246
 247       break;
 248     }
 249   }
 250
 251   return status;
 252 }
 253
 254 nsSystemFontsWin::nsSystemFontsWin()
 255 {
 256
 257 }
 258