wxFontInstance::wxFontInstance(float ptSize, bool aa, font_lib_t *fontLib)
: wxFontInstanceBase(ptSize, aa)
{
m_font = MGL_loadFontInstance(fontLib, ptSize, 0.0, 0.0, aa);
wxASSERT_MSG( m_font, wxT("cannot create font instance") );
}
/****************************************************************************
REMARKS:
Checks if the font is fixed width or proportional by comparing
widths of 'i' and 'm'.
{secret}
****************************************************************************/
static ibool fontIsFixed(
font_lib_t *fontLib)
{
font_t *font;
ibool fixed;
font = MGL_loadFontInstance(fontLib, 12, 0.0, 0.0, false);
if (!font) return false;
fixed = (getWidthOfChar(font, 'i') == getWidthOfChar(font, 'm'));
MGL_unloadFontInstance(font);
return fixed;
}
wxMGLFontInstance::wxMGLFontInstance(wxMGLFontLibrary *fontLib,
float pt, bool slant, bool aa)
{
m_fontLib = fontLib;
m_font = NULL;
m_pt = pt;
m_slant = slant;
m_aa = aa;
float slantAngle = m_slant ? 15.0 : 0.0;
wxLogTrace("mgl_font", "loading instance of '%s' slant=%i pt=%0.1f aa=%i",
m_fontLib->GetMGLfont_lib_t()->name, m_slant, m_pt, m_aa);
m_font = MGL_loadFontInstance(m_fontLib->GetMGLfont_lib_t(),
m_pt, slantAngle, 0.0, aa);
wxASSERT_MSG( m_font, wxT("Cannot create font instance.") );
}
ibool textDir(MGLDC *dc)
/****************************************************************************
*
* Function: textDir
* Parameters: dc - Device context
*
* Description: Display text in varying directions on the screen.
*
****************************************************************************/
{
int maxx,maxy;
int horiz,vert;
char *str;
font_t *font = NULL;
font_lib_t *fontLib;
char buf[80];
maxx = MGL_maxx();
maxy = MGL_maxy();
strcpy(buf,FontLibname[0]);
if ((fontLib = MGL_openFontLib(buf)) == NULL)
return FALSE;
if ((font = MGL_loadFontInstance(fontLib,40,0,0,false)) == NULL) {
MGL_closeFontLib(fontLib);
return FALSE;
}
sprintf(buf,"Character set (%s)", font->name);
mainWindow(dc,buf);
MGL_useFont(font);
for (horiz = MGL_LEFT_TEXT; horiz <= MGL_RIGHT_TEXT; horiz++)
for (vert = MGL_TOP_TEXT; vert <= MGL_BASELINE_TEXT; vert++) {
MGL_clearDevice();
MGL_setColor(MGL_RED);
MGL_lineCoord(0,maxy/2,maxx,maxy/2);
MGL_lineCoord(maxx/2,0,maxx/2,maxy);
MGL_setTextJustify(MGL_LEFT_TEXT,MGL_TOP_TEXT);
MGL_setTextDirection(MGL_RIGHT_DIR);
MGL_setColor(MGL_GREEN);
MGL_moveToCoord(0,0);
MGL_drawStr("horiz: ");
switch (horiz) {
case MGL_LEFT_TEXT:
str = "LEFT";
break;
case MGL_CENTER_TEXT:
str = "CENTER";
break;
case MGL_RIGHT_TEXT:
str = "RIGHT";
break;
default:
str = "UNKNOWN";
}
MGL_drawStr(str);
MGL_moveToCoord(0,MGL_textHeight());
MGL_drawStr("vert: ");
switch (vert) {
case MGL_TOP_TEXT:
str = "TOP";
break;
case MGL_CENTER_TEXT:
str = "CENTER";
break;
case MGL_BOTTOM_TEXT:
str = "BOTTOM";
break;
case MGL_BASELINE_TEXT:
str = "BASELINE";
break;
default:
str = "UNKNOWN";
}
MGL_drawStr(str);
MGL_makeCurrentDC(dc);
MGL_setTextJustify(horiz,vert);
MGL_useFont(font);
MGL_setColor(MGL_BLUE);
MGL_lineCoord(0,maxy/2+MGL_textHeight()-1,maxx,maxy/2+MGL_textHeight()-1);
MGL_lineCoord(maxx/2+MGL_textHeight()-1,0,maxx/2+MGL_textHeight()-1,maxy);
MGL_setColor(MGL_WHITE);
MGL_setTextDirection(MGL_LEFT_DIR);
MGL_drawStrXY(maxx/2,maxy/2,"This text goes left");
MGL_setTextDirection(MGL_DOWN_DIR);
MGL_drawStrXY(maxx/2,maxy/2,"This text goes down");
MGL_setTextDirection(MGL_UP_DIR);
MGL_drawStrXY(maxx/2,maxy/2,"This text goes up");
MGL_setTextDirection(MGL_RIGHT_DIR);
MGL_drawStrXY(maxx/2,maxy/2,"This text goes right");
if (!pause())
break;
}
/* Unload the font from memory */
MGL_useFont(defFont);
MGL_unloadFont(font);
MGL_closeFontLib(fontLib);
defaultAttributes(dc);
return true;
}
ibool textLibDump(MGLDC *dc)
/****************************************************************************
*
* Function: textDump
* Parameters: dc - Device context
*
* Description: Displays all the characters in each of the fonts in
* the distribution.
*
****************************************************************************/
{
int i,j,maxx,pointSize = 18;
font_t *font;
font_lib_t *fontLib;
char buf[80];
mainWindow(dc,"Loading font...");
maxx = MGL_maxx();
for (i = 0; i < NUM_FontLibS; i++) { /* For each available font */
/* Attempt to load the font file from disk. If it cannot be
* found, then go onto the next one.
*/
strcpy(buf,FontLibname[i]);
if ((fontLib = MGL_openFontLib(buf)) == NULL)
continue;
if ((font = MGL_loadFontInstance(fontLib,pointSize,0,0,false)) == NULL) {
MGL_closeFontLib(fontLib);
continue;
}
switch (fontLib->fontLibType) {
case MGL_BITMAPFONT_LIB:
sprintf(buf,"Bitmap Font Library: %s - %d Point", fontLib->name, font->pointSize);
break;
case MGL_TRUETYPEFONT_LIB:
sprintf(buf,"TrueType Font Library: %s - %d Point", fontLib->name, font->pointSize);
break;
case MGL_TYPE1FONT_LIB:
sprintf(buf,"Type1 Font Library: %s - %d Point", fontLib->name, font->pointSize);
break;
}
mainWindow(dc,buf);
/* Display all characters on the screen */
MGL_useFont(font);
buf[1] = '\0';
for (j = ' '; j < 256; j++) {
buf[0] = j;
MGL_drawStr(buf);
if (MGL_getX() + MGL_maxCharWidth() > maxx) {
MGL_moveToCoord(0,MGL_getY() + MGL_textHeight());
}
}
/* Unload the font from memory */
MGL_useFont(defFont);
MGL_unloadFont(font);
MGL_closeFontLib(fontLib);
if (!pause())
return false;
mainWindow(dc,"Loading font...");
}
defaultAttributes(dc);
return true;
}
