WTextItem WPdfImage::measureText(const WString& text, double maxWidth,
bool wordWrap)
{
if (trueTypeFont_ && !trueTypeFonts_->busy())
return trueTypeFonts_->measureText(painter()->font(), text, maxWidth,
wordWrap);
else {
HPDF_REAL width = 0;
if (!wordWrap)
maxWidth = 1E9;
else
maxWidth += EPSILON;
if (trueTypeFonts_->busy())
setChanged(PainterChangeFlag::Font);
std::string s = trueTypeFont_ ? text.toUTF8() : text.narrow();
int bytes = HPDF_Page_MeasureText(page_, s.c_str(), maxWidth, wordWrap,
&width);
if (trueTypeFont_)
return WTextItem(WString::fromUTF8(s.substr(0, bytes)), width);
else
return WTextItem(text.value().substr(0, bytes), width);
}
}
JNIEXPORT jint JNICALL Java_com_draekko_libharu_PdfPage_measureText
(JNIEnv *env, jobject obj, jstring text, jfloat width, jboolean wordwrap, jfloat real_width) {
HPDF_UINT ret = -1;
HPDF_REAL *rw = NULL;
const char* txt = env->GetStringUTFChars(text, 0);
haru_setup_error_handler(env, __func__);
HPDF_Page page = get_HPDF_Page(env, obj);
if (real_width > -1) {
rw = &real_width;
}
ret = HPDF_Page_MeasureText(page, txt, width, wordwrap, rw);
env->ReleaseStringUTFChars(text, txt);
haru_clear_error_handler();
return ret;
}
bool haru_nsfont_position_in_string(const plot_font_style_t *fstyle,
const char *string, size_t length,
int x, size_t *char_offset, int *actual_x)
{
HPDF_Doc pdf;
HPDF_Page page;
char *string_nt;
HPDF_UINT offset;
HPDF_REAL real_width;
if (!haru_nsfont_init(&pdf, &page, string, &string_nt, length))
return false;
if (HPDF_Page_SetWidth(page, x) != HPDF_OK
|| !haru_nsfont_apply_style(fstyle, pdf, page, NULL, NULL)) {
free(string_nt);
HPDF_Free(pdf);
return false;
}
offset = HPDF_Page_MeasureText(page, string_nt, x,
HPDF_FALSE, &real_width);
if (real_width < x)
*char_offset = offset;
else {
assert(fabs(real_width - x) < FLT_EPSILON);
assert(offset > 0);
*char_offset = offset - 1;
}
/*TODO: this is only the right edge of the character*/
*actual_x = real_width;
#ifdef FONT_HARU_DEBUG
LOG("Position in string: %s at x: %i; Calculated position: %i", string_nt, x, *char_offset);
#endif
free(string_nt);
HPDF_Free(pdf);
return true;
}
bool haru_nsfont_split(const plot_font_style_t *fstyle,
const char *string, size_t length,
int x, size_t *char_offset, int *actual_x)
{
HPDF_Doc pdf;
HPDF_Page page;
char *string_nt;
HPDF_REAL real_width;
HPDF_UINT offset;
if (!haru_nsfont_init(&pdf, &page, string, &string_nt, length))
return false;
if (HPDF_Page_SetWidth(page, x) != HPDF_OK
|| !haru_nsfont_apply_style(fstyle, pdf, page, NULL, NULL)) {
free(string_nt);
HPDF_Free(pdf);
return false;
}
offset = HPDF_Page_MeasureText(page, string_nt, x,
HPDF_TRUE, &real_width);
#ifdef FONT_HARU_DEBUG
LOG("Splitting string: %s for width: %i ; Calculated position: %i Calculated real_width: %f", string_nt, x, *char_offset, real_width);
#endif
*char_offset = offset - 1;
/*TODO: this is only the right edge of the character*/
*actual_x = real_width;
free(string_nt);
HPDF_Free(pdf);
return true;
}
int main (int argc, char **argv)
{
const char *page_title = "Text Demo";
HPDF_Doc pdf;
HPDF_Font font;
HPDF_Page page;
char fname[256];
const char* samp_text = "abcdefgABCDEFG123!#$%&+-@?";
const char* samp_text2 = "The quick brown fox jumps over the lazy dog.";
float tw;
float fsize;
int i;
int len;
float angle1;
float angle2;
float rad1;
float rad2;
float ypos;
strcpy (fname, argv[0]);
strcat (fname, ".pdf");
pdf = HPDF_New (error_handler, NULL);
if (!pdf) {
printf ("error: cannot create PdfDoc object\n");
return 1;
}
if (setjmp(env)) {
HPDF_Free (pdf);
return 1;
}
/* set compression mode */
HPDF_SetCompressionMode (pdf, HPDF_COMP_ALL);
/* create default-font */
font = HPDF_GetFont (pdf, "Helvetica", NULL);
/* add a new page object. */
page = HPDF_AddPage (pdf);
/* draw grid to the page */
print_grid (pdf, page);
/* print the lines of the page.
HPDF_Page_SetLineWidth (page, 1);
HPDF_Page_Rectangle (page, 50, 50, HPDF_Page_GetWidth(page) - 100,
HPDF_Page_GetHeight (page) - 110);
HPDF_Page_Stroke (page);
*/
/* print the title of the page (with positioning center). */
HPDF_Page_SetFontAndSize (page, font, 24);
tw = HPDF_Page_TextWidth (page, page_title);
HPDF_Page_BeginText (page);
HPDF_Page_TextOut (page, (HPDF_Page_GetWidth(page) - tw) / 2,
HPDF_Page_GetHeight (page) - 50, page_title);
HPDF_Page_EndText (page);
HPDF_Page_BeginText (page);
HPDF_Page_MoveTextPos (page, 60, HPDF_Page_GetHeight(page) - 60);
/*
* font size
*/
fsize = 8;
while (fsize < 60) {
char buf[50];
int len;
/* set style and size of font. */
HPDF_Page_SetFontAndSize(page, font, fsize);
/* set the position of the text. */
HPDF_Page_MoveTextPos (page, 0, -5 - fsize);
/* measure the number of characters which included in the page. */
strcpy(buf, samp_text);
len = HPDF_Page_MeasureText (page, samp_text,
HPDF_Page_GetWidth(page) - 120, HPDF_FALSE, NULL);
/* truncate the text. */
buf[len] = 0x00;
HPDF_Page_ShowText (page, buf);
/* print the description. */
HPDF_Page_MoveTextPos (page, 0, -10);
HPDF_Page_SetFontAndSize(page, font, 8);
#ifdef __WIN32__
_snprintf(buf, 50, "Fontsize=%.0f", fsize);
#else
snprintf(buf, 50, "Fontsize=%.0f", fsize);
#endif
HPDF_Page_ShowText (page, buf);
fsize *= 1.5;
}
/*
* font color
*/
HPDF_Page_SetFontAndSize(page, font, 8);
HPDF_Page_MoveTextPos (page, 0, -30);
HPDF_Page_ShowText (page, "Font color");
HPDF_Page_SetFontAndSize (page, font, 18);
HPDF_Page_MoveTextPos (page, 0, -20);
len = strlen (samp_text);
for (i = 0; i < len; i++) {
char buf[2];
float r = (float)i / (float)len;
float g = 1 - ((float)i / (float)len);
buf[0] = samp_text[i];
buf[1] = 0x00;
HPDF_Page_SetRGBFill (page, r, g, 0.0);
HPDF_Page_ShowText (page, buf);
}
HPDF_Page_MoveTextPos (page, 0, -25);
for (i = 0; i < len; i++) {
char buf[2];
float r = (float)i / (float)len;
float b = 1 - ((float)i / (float)len);
buf[0] = samp_text[i];
buf[1] = 0x00;
HPDF_Page_SetRGBFill (page, r, 0.0, b);
HPDF_Page_ShowText (page, buf);
}
HPDF_Page_MoveTextPos (page, 0, -25);
for (i = 0; i < len; i++) {
char buf[2];
float b = (float)i / (float)len;
float g = 1 - ((float)i / (float)len);
buf[0] = samp_text[i];
buf[1] = 0x00;
HPDF_Page_SetRGBFill (page, 0.0, g, b);
HPDF_Page_ShowText (page, buf);
}
HPDF_Page_EndText (page);
ypos = 450;
/*
* Font rendering mode
*/
HPDF_Page_SetFontAndSize(page, font, 32);
HPDF_Page_SetRGBFill (page, 0.5, 0.5, 0.0);
HPDF_Page_SetLineWidth (page, 1.5);
/* PDF_FILL */
show_description (page, 60, ypos,
"RenderingMode=PDF_FILL");
HPDF_Page_SetTextRenderingMode (page, HPDF_FILL);
HPDF_Page_BeginText (page);
HPDF_Page_TextOut (page, 60, ypos, "ABCabc123");
HPDF_Page_EndText (page);
/* PDF_STROKE */
show_description (page, 60, ypos - 50,
"RenderingMode=PDF_STROKE");
HPDF_Page_SetTextRenderingMode (page, HPDF_STROKE);
HPDF_Page_BeginText (page);
HPDF_Page_TextOut (page, 60, ypos - 50, "ABCabc123");
HPDF_Page_EndText (page);
/* PDF_FILL_THEN_STROKE */
show_description (page, 60, ypos - 100,
"RenderingMode=PDF_FILL_THEN_STROKE");
HPDF_Page_SetTextRenderingMode (page, HPDF_FILL_THEN_STROKE);
HPDF_Page_BeginText (page);
HPDF_Page_TextOut (page, 60, ypos - 100, "ABCabc123");
HPDF_Page_EndText (page);
/* PDF_FILL_CLIPPING */
show_description (page, 60, ypos - 150,
"RenderingMode=PDF_FILL_CLIPPING");
HPDF_Page_GSave (page);
HPDF_Page_SetTextRenderingMode (page, HPDF_FILL_CLIPPING);
HPDF_Page_BeginText (page);
HPDF_Page_TextOut (page, 60, ypos - 150, "ABCabc123");
HPDF_Page_EndText (page);
show_stripe_pattern (page, 60, ypos - 150);
HPDF_Page_GRestore (page);
/* PDF_STROKE_CLIPPING */
show_description (page, 60, ypos - 200,
"RenderingMode=PDF_STROKE_CLIPPING");
HPDF_Page_GSave (page);
HPDF_Page_SetTextRenderingMode (page, HPDF_STROKE_CLIPPING);
HPDF_Page_BeginText (page);
HPDF_Page_TextOut (page, 60, ypos - 200, "ABCabc123");
HPDF_Page_EndText (page);
show_stripe_pattern (page, 60, ypos - 200);
HPDF_Page_GRestore (page);
/* PDF_FILL_STROKE_CLIPPING */
show_description (page, 60, ypos - 250,
"RenderingMode=PDF_FILL_STROKE_CLIPPING");
HPDF_Page_GSave (page);
HPDF_Page_SetTextRenderingMode (page, HPDF_FILL_STROKE_CLIPPING);
HPDF_Page_BeginText (page);
HPDF_Page_TextOut (page, 60, ypos - 250, "ABCabc123");
HPDF_Page_EndText (page);
show_stripe_pattern (page, 60, ypos - 250);
HPDF_Page_GRestore (page);
/* Reset text attributes */
HPDF_Page_SetTextRenderingMode (page, HPDF_FILL);
HPDF_Page_SetRGBFill (page, 0, 0, 0);
HPDF_Page_SetFontAndSize(page, font, 30);
/*
* Rotating text
*/
angle1 = 30; /* A rotation of 30 degrees. */
rad1 = angle1 / 180 * 3.141592; /* Calcurate the radian value. */
show_description (page, 320, ypos - 60, "Rotating text");
HPDF_Page_BeginText (page);
HPDF_Page_SetTextMatrix (page, cos(rad1), sin(rad1), -sin(rad1), cos(rad1),
330, ypos - 60);
HPDF_Page_ShowText (page, "ABCabc123");
HPDF_Page_EndText (page);
/*
* Skewing text.
*/
show_description (page, 320, ypos - 120, "Skewing text");
HPDF_Page_BeginText (page);
angle1 = 10;
angle2 = 20;
rad1 = angle1 / 180 * 3.141592;
rad2 = angle2 / 180 * 3.141592;
HPDF_Page_SetTextMatrix (page, 1, tan(rad1), tan(rad2), 1, 320, ypos - 120);
HPDF_Page_ShowText (page, "ABCabc123");
HPDF_Page_EndText (page);
/*
* scaling text (X direction)
*/
show_description (page, 320, ypos - 175, "Scaling text (X direction)");
HPDF_Page_BeginText (page);
HPDF_Page_SetTextMatrix (page, 1.5, 0, 0, 1, 320, ypos - 175);
HPDF_Page_ShowText (page, "ABCabc12");
HPDF_Page_EndText (page);
/*
* scaling text (Y direction)
*/
show_description (page, 320, ypos - 250, "Scaling text (Y direction)");
HPDF_Page_BeginText (page);
HPDF_Page_SetTextMatrix (page, 1, 0, 0, 2, 320, ypos - 250);
HPDF_Page_ShowText (page, "ABCabc123");
HPDF_Page_EndText (page);
/*
* char spacing, word spacing
*/
show_description (page, 60, 140, "char-spacing 0");
show_description (page, 60, 100, "char-spacing 1.5");
show_description (page, 60, 60, "char-spacing 1.5, word-spacing 2.5");
HPDF_Page_SetFontAndSize (page, font, 20);
HPDF_Page_SetRGBFill (page, 0.1, 0.3, 0.1);
/* char-spacing 0 */
HPDF_Page_BeginText (page);
HPDF_Page_TextOut (page, 60, 140, samp_text2);
HPDF_Page_EndText (page);
/* char-spacing 1.5 */
HPDF_Page_SetCharSpace (page, 1.5);
HPDF_Page_BeginText (page);
HPDF_Page_TextOut (page, 60, 100, samp_text2);
HPDF_Page_EndText (page);
/* char-spacing 1.5, word-spacing 3.5 */
HPDF_Page_SetWordSpace (page, 2.5);
HPDF_Page_BeginText (page);
HPDF_Page_TextOut (page, 60, 60, samp_text2);
HPDF_Page_EndText (page);
/* save the document to a file */
HPDF_SaveToFile (pdf, fname);
/* clean up */
HPDF_Free (pdf);
return 0;
}
