/*
* device_MetricInfo should return height, depth, and
* width information for the given character in DEVICE
* units.
* Note: in an 8-bit locale, c is 'char'.
* In an mbcslocale, it is wchar_t, and at least some
* of code assumes that is UCS-2 (Windows, true) or UCS-4.
* This is used for formatting mathematical expressions
* and for exact centering of text (see GText)
* If the device cannot provide metric information then
* it MUST return 0.0 for ascent, descent, and width.
*
* R_GE_gcontext parameters that should be honoured (if possible):
* font, cex, ps
*/
static void SWF_MetricInfo( int c, const pGEcontext plotParams,
double *ascent, double *descent, double *width, pDevDesc deviceInfo ){
/* Shortcut pointers to variables of interest. */
swfDevDesc *swfInfo = (swfDevDesc *) deviceInfo->deviceSpecific;
if( swfInfo->debug == TRUE ){
fprintf(swfInfo->logFile,
"SWF_MetricInfo:");
fflush(swfInfo->logFile);
}
SWFText text_object = newSWFText();
//char *s;
//sprintf(s, "%c", c);
// Tell the text object to use the font previously loaded
SWFText_setFont(text_object, swfInfo->ss);
// Set the height of the text
SWFText_setHeight(text_object, plotParams->ps * plotParams->cex);
// Add a string to the text object
//FIXME!!! pass real character.
SWFText_addString(text_object, "a", NULL);
double a = SWFText_getAscent(text_object);
double d = SWFText_getDescent(text_object);
double w = SWFText_getStringWidth(text_object, "a");
if( swfInfo->debug == TRUE ){
fprintf(swfInfo->logFile,
"Calculated Ascent=%5.2f, Decent=%5.2f, Width=%5.2f\n",
a, d, w);
fflush(swfInfo->logFile);
}
*ascent = a;
*descent = d;
*width = w;
destroySWFText(text_object);
}
/*
* device_StrWidth should return the width of the given
* string in DEVICE units.
* An example is ...
*
* static double X11_StrWidth(const char *str,
* const pGEcontext gc,
* pDevDesc dd)
*
* R_GE_gcontext parameters that should be honoured (if possible):
* font, cex, ps
*/
static double SWF_StrWidth( const char *str,
const pGEcontext plotParams, pDevDesc deviceInfo )
{
/* Shortcut pointers to variables of interest. */
swfDevDesc *swfInfo = (swfDevDesc *) deviceInfo->deviceSpecific;
if( swfInfo->debug == TRUE ){
fprintf(swfInfo->logFile,
"SWF_StrWidth: ");
fflush(swfInfo->logFile);
}
SWFText text_object = newSWFText();
// Tell the text object to use the font previously loaded
SWFText_setFont(text_object,
selectFont(plotParams->fontface, plotParams->fontfamily, swfInfo));
// Set the height of the text
SWFText_setHeight(text_object, plotParams->ps * plotParams->cex);
if( swfInfo->debug == TRUE )
fprintf(swfInfo->logFile, "Honoring ps=%7.2f, cex=%7.2f\n",
plotParams->ps, plotParams->cex);
float width = SWFText_getStringWidth(text_object, str);
if( swfInfo->debug == TRUE ){
fprintf(swfInfo->logFile,
"\tCalculated Width of \"%s\" as %7.2f\n", str, width);
fflush(swfInfo->logFile);
}
destroySWFText(text_object);
return width;
}
EXPORT BOOL WINAPI destroy_t(SWFText text, int p2, int p3, int p4)
{
destroySWFText(text);
return 0;
}
int main(void)
{
// Create local variables
int i;
SWFDisplayItem image_display_item;
SWFFont font_object;
SWFMovie test_movie;
SWFText text_object;
// Initialise the movie structure in memory
Ming_init();
test_movie = newSWFMovieWithVersion(7);
// Set the desired compression level
// for the output (9 = maximum compression)
Ming_setSWFCompression(9);
// Set the background color for the movie
SWFMovie_setBackground(test_movie, 0x00, 0x00, 0x00);
// Adjust the dimensions of the movie
SWFMovie_setDimension(test_movie, 800, 600);
// Set the frame rate for the movie to 24 frames per second
SWFMovie_setRate(test_movie, 24.0);
// Load a font from disk
font_object = newSWFFont_fromFile("../../fonts/vera/Vera.ttf");
if (NULL == font_object)
{
// Something went wrong, so exit
printf("Unable to load font from file.\n");
return EXIT_FAILURE;
}
// Create a new, empty text object
text_object = newSWFText();
// Tell the text object to use the font previously loaded
SWFText_setFont(text_object, font_object);
// Set the height of the text
SWFText_setHeight(text_object, 18.0);
// Set the color of the text
SWFText_setColor(text_object, 0x00, 0x00, 0xff, 0xff);
// Add a string to the text object
SWFText_addString(text_object, "This is some example text", NULL);
// Add the text object to the movie (at 0,0)
image_display_item = SWFMovie_add(test_movie, (SWFBlock) text_object);
// Move to 100, 100
SWFDisplayItem_moveTo(image_display_item, 100.00, 100.0);
// Progressively move the text down and to the right
for (i = 0; i <= 250; i++)
{
SWFMovie_nextFrame(test_movie);
SWFDisplayItem_move(image_display_item, 2, 2);
}
// Save the swf movie file to disk
SWFMovie_save(test_movie, "ming-test-text.swf");
// Free the swf movie in memory
destroySWFMovie(test_movie);
// Free the swf text object
destroySWFText(text_object);
return EXIT_SUCCESS;
}
