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https://github.com/michaelrsweet/pdfio.git
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Add text color and optimize text groups into whole blocks.
Add UNICODE_VALUE define to allow toggling between Unicode and ISO-8859-1 modes.
This commit is contained in:
Michael R Sweet
parent
5a4afad566
commit
4b29c9a1c2
@ -29,6 +29,15 @@
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// Types...
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//
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typedef enum doccolor_e // Document color enumeration
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{
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DOCCOLOR_BLACK, // #000
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DOCCOLOR_RED, // #900
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DOCCOLOR_GREEN, // #090
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DOCCOLOR_BLUE, // #00C
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DOCCOLOR_GRAY // #555
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} doccolor_t;
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typedef enum docfont_e // Document font enumeration
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{
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DOCFONT_REGULAR, // Roboto-Regular
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@ -59,6 +68,7 @@ typedef struct docdata_s // Document formatting data
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char *heading; // Current document heading
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pdfio_stream_t *st; // Current page stream
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double y; // Current position on page
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doccolor_t color; // Current color
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} docdata_t;
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@ -90,17 +100,18 @@ static const char * const docfont_names[] =
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"FM"
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};
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#define LINE_HEIGHT 1.2 // Multiplier for line height
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#define LINE_HEIGHT 1.4 // Multiplier for line height
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#define SIZE_BODY 11.0 // Size of body text (points)
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#define SIZE_HEADFOOT 9.0 // Size of header/footer text
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#define SIZE_HEADING_1 18.0 // Size of first level heading
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#define SIZE_HEADING_2 16.0 // Size of top level heading
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#define SIZE_HEADING_3 15.0 // Size of top level heading
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#define SIZE_HEADING_4 14.0 // Size of top level heading
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#define SIZE_HEADING_5 13.0 // Size of top level heading
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#define SIZE_HEADING_6 12.0 // Size of top level heading
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#define SIZE_TABLE 10.0 // Size of table text
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#define SIZE_CODEBLOCK 10.0 // Size of code block text (points)
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#define SIZE_HEADFOOT 9.0 // Size of header/footer text (points)
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#define SIZE_HEADING_1 18.0 // Size of first level heading (points)
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#define SIZE_HEADING_2 16.0 // Size of top level heading (points)
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#define SIZE_HEADING_3 15.0 // Size of top level heading (points)
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#define SIZE_HEADING_4 14.0 // Size of top level heading (points)
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#define SIZE_HEADING_5 13.0 // Size of top level heading (points)
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#define SIZE_HEADING_6 12.0 // Size of top level heading (points)
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#define SIZE_TABLE 10.0 // Size of table text (points)
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#define PAGE_WIDTH mm2pt(210) // Page width in points
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#define PAGE_LENGTH in2pt(11) // Page length in points
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@ -114,6 +125,44 @@ static const char * const docfont_names[] =
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// Vertical position of header
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#define PAGE_FOOTER in2pt(0.5) // Vertical position of footer
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#define UNICODE_VALUE true // `true` for Unicode text, `false` for ISO-8859-1
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//
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// 'set_color()' - Set the stroke and fill color.
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//
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static void
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set_color(docdata_t *dd, // I - Document data
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doccolor_t color) // I - Document color
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{
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switch (color)
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{
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case DOCCOLOR_BLACK :
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pdfioContentSetFillColorDeviceGray(dd->st, 0.0);
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pdfioContentSetStrokeColorDeviceGray(dd->st, 0.0);
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break;
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case DOCCOLOR_RED :
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pdfioContentSetFillColorDeviceRGB(dd->st, 0.6, 0.0, 0.0);
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pdfioContentSetStrokeColorDeviceRGB(dd->st, 0.6, 0.0, 0.0);
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break;
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case DOCCOLOR_GREEN :
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pdfioContentSetFillColorDeviceRGB(dd->st, 0.0, 0.6, 0.0);
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pdfioContentSetStrokeColorDeviceRGB(dd->st, 0.0, 0.6, 0.0);
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break;
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case DOCCOLOR_BLUE :
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pdfioContentSetFillColorDeviceRGB(dd->st, 0.0, 0.0, 0.8);
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pdfioContentSetStrokeColorDeviceRGB(dd->st, 0.0, 0.0, 0.8);
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break;
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case DOCCOLOR_GRAY :
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pdfioContentSetFillColorDeviceGray(dd->st, 0.333);
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pdfioContentSetStrokeColorDeviceGray(dd->st, 0.333);
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break;
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}
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dd->color = color;
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}
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//
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// 'new_page()' - Start a new page.
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@ -151,8 +200,7 @@ new_page(docdata_t *dd) // I - Document data
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dd->st = pdfioFileCreatePage(dd->pdf, page_dict);
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// Add header/footer text
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pdfioContentSetFillColorGray(dd->st, 0.333);
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pdfioContentSetStrokeColorGray(dd->st, 0.333);
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set_color(dd, DOCCOLOR_GRAY);
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pdfioContentSetTextFont(dd->st, docfont_names[DOCFONT_REGULAR], SIZE_HEADFOOT);
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if (pdfioFileGetNumPages(dd->pdf) > 1 && dd->title)
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@ -162,7 +210,7 @@ new_page(docdata_t *dd) // I - Document data
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pdfioContentTextBegin(dd->st);
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pdfioContentTextMoveTo(dd->st, dd->crop_box.x1 + 0.5 * (dd->crop_box.x2 - dd->crop_box.x1 - width), dd->crop_box.y2 - SIZE_HEADFOOT);
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pdfioContentTextShow(dd->st, /*unicode*/true, dd->title);
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pdfioContentTextShow(dd->st, UNICODE_VALUE, dd->title);
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pdfioContentTextEnd(dd->st);
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pdfioContentPathMoveTo(dd->st, dd->crop_box.x1, dd->crop_box.y2 - 2 * SIZE_HEADFOOT * LINE_HEIGHT + SIZE_HEADFOOT);
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@ -189,12 +237,13 @@ new_page(docdata_t *dd) // I - Document data
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pdfioContentTextMoveTo(dd->st, dd->crop_box.x1, dd->crop_box.y1);
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}
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pdfioContentTextShow(dd->st, /*unicode*/true, temp);
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pdfioContentTextShow(dd->st, UNICODE_VALUE, temp);
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pdfioContentTextEnd(dd->st);
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if (dd->heading)
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{
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pdfioContentTextBegin(dd->st);
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if (pdfioFileGetNumPages(dd->pdf) & 1)
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{
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// Current heading on left...
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@ -206,13 +255,12 @@ new_page(docdata_t *dd) // I - Document data
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pdfioContentTextMoveTo(dd->st, dd->crop_box.x2 - width, dd->crop_box.y1);
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}
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pdfioContentTextShow(dd->st, /*unicode*/true, dd->heading);
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pdfioContentTextShow(dd->st, UNICODE_VALUE, dd->heading);
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pdfioContentTextEnd(dd->st);
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}
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// The rest of the text will be full black...
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pdfioContentSetFillColorGray(dd->st, 0.0);
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pdfioContentSetStrokeColorGray(dd->st, 0.0);
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set_color(dd, DOCCOLOR_BLACK);
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dd->y = dd->art_box.y2;
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}
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@ -242,7 +290,9 @@ format_block(docdata_t *dd, // I - Document data
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prevface; // Previous font face
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double x, y; // Current position
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double width, // Width of current fragment
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lwidth, // Leader width
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wswidth; // Width of whitespace
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doccolor_t color; // Color of text
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blocktype = mmdGetType(block);
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@ -261,16 +311,17 @@ format_block(docdata_t *dd, // I - Document data
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// Add leader text on first line...
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pdfioContentSetTextFont(dd->st, docfont_names[prevface = fontface], fontsize);
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width = pdfioContentTextMeasure(dd->fonts[fontface], leader, fontsize);
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lwidth = pdfioContentTextMeasure(dd->fonts[fontface], leader, fontsize);
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pdfioContentTextBegin(dd->st);
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pdfioContentTextMoveTo(dd->st, left - width, y);
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pdfioContentTextShow(dd->st, /*unicode*/true, leader);
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pdfioContentTextMoveTo(dd->st, left - lwidth, y);
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pdfioContentTextShow(dd->st, UNICODE_VALUE, leader);
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}
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else
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{
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// No leader text...
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prevface = DOCFONT_MAX;
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lwidth = 0.0;
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}
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for (current = mmdGetFirstChild(block), x = left; current; current = next)
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@ -314,6 +365,13 @@ format_block(docdata_t *dd, // I - Document data
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else
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curface = fontface;
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if (curtype == MMD_TYPE_CODE_TEXT)
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color = DOCCOLOR_RED;
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else if (curtype == MMD_TYPE_LINKED_TEXT)
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color = DOCCOLOR_BLUE;
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else
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color = DOCCOLOR_BLACK;
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width = pdfioContentTextMeasure(dd->fonts[curface], curtext, fontsize);
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if (curws)
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wswidth = pdfioContentTextMeasure(dd->fonts[curface], " ", fontsize);
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@ -326,38 +384,48 @@ format_block(docdata_t *dd, // I - Document data
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x = left;
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y -= fontsize * LINE_HEIGHT;
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if (prevface != DOCFONT_MAX)
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pdfioContentTextEnd(dd->st);
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prevface = DOCFONT_MAX;
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if (y < dd->art_box.y1)
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{
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// New page...
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if (prevface != DOCFONT_MAX)
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{
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pdfioContentTextEnd(dd->st);
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prevface = DOCFONT_MAX;
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}
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new_page(dd);
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y = dd->y - fontsize * LINE_HEIGHT;
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}
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else
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{
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pdfioContentTextMoveTo(dd->st, lwidth, -fontsize * LINE_HEIGHT);
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lwidth = 0.0;
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}
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}
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if (curface != prevface)
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{
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if (prevface != DOCFONT_MAX)
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pdfioContentTextEnd(dd->st);
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pdfioContentSetTextFont(dd->st, docfont_names[prevface = curface], fontsize);
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if (prevface == DOCFONT_MAX)
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{
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pdfioContentTextBegin(dd->st);
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pdfioContentTextMoveTo(dd->st, x, y);
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}
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pdfioContentSetTextFont(dd->st, docfont_names[prevface = curface], fontsize);
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}
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if (color != dd->color)
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set_color(dd, color);
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if (x > left && curws)
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{
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pdfioContentTextShowf(dd->st, /*unicode*/true, " %s", curtext);
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pdfioContentTextShowf(dd->st, UNICODE_VALUE, " %s", curtext);
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x += width + wswidth;
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}
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else
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{
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pdfioContentTextShow(dd->st, /*unicode*/true, curtext);
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pdfioContentTextShow(dd->st, UNICODE_VALUE, curtext);
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x += width;
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}
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@ -367,18 +435,24 @@ format_block(docdata_t *dd, // I - Document data
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x = left;
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y -= fontsize * LINE_HEIGHT;
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if (prevface != DOCFONT_MAX)
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pdfioContentTextEnd(dd->st);
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prevface = DOCFONT_MAX;
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if (y < dd->art_box.y1)
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{
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// New page...
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if (prevface != DOCFONT_MAX)
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{
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pdfioContentTextEnd(dd->st);
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prevface = DOCFONT_MAX;
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}
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new_page(dd);
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y = dd->y - fontsize * LINE_HEIGHT;
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}
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else
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{
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pdfioContentTextMoveTo(dd->st, lwidth, -fontsize * LINE_HEIGHT);
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lwidth = 0.0;
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}
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}
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}
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@ -539,7 +613,7 @@ main(int argc, // I - Number of command-line arguments
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// Add fonts...
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for (fontface = DOCFONT_REGULAR; fontface < DOCFONT_MAX; fontface ++)
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{
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if ((dd.fonts[fontface] = pdfioFileCreateFontObjFromFile(dd.pdf, docfont_filenames[fontface], /*unicode*/true)) == NULL)
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if ((dd.fonts[fontface] = pdfioFileCreateFontObjFromFile(dd.pdf, docfont_filenames[fontface], UNICODE_VALUE)) == NULL)
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return (1);
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}
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