/** Draw a TextLine object.
* @param object The renderer object to use for transform and output
* @param text_line The TextLine to render, including font and height.
* @param pos The position to render it at.
* @param color The color to render it with.
*/
static void
draw_text_line (DiaRenderer *object, TextLine *text_line,
Point *pos, Alignment alignment, Color *color)
{
DiaGdkRenderer *renderer = DIA_GDK_RENDERER (object);
GdkColor gdkcolor;
int x,y;
Point start_pos;
PangoLayout* layout = NULL;
const gchar *text = text_line_get_string(text_line);
int height_pixels;
real font_height = text_line_get_height(text_line);
real scale = dia_transform_length(renderer->transform, 1.0);
if (text == NULL || *text == '\0') return; /* Don't render empty strings. */
point_copy(&start_pos,pos);
renderer_color_convert(renderer, color, &gdkcolor);
height_pixels = dia_transform_length(renderer->transform, font_height);
if (height_pixels < 2) { /* "Greeking" instead of making tiny font */
int width_pixels = dia_transform_length(renderer->transform,
text_line_get_width(text_line));
gdk_gc_set_foreground(renderer->gc, &gdkcolor);
gdk_gc_set_dashes(renderer->gc, 0, (gint8*)"\1\2", 2);
dia_transform_coords(renderer->transform, start_pos.x, start_pos.y, &x, &y);
gdk_draw_line(renderer->pixmap, renderer->gc, x, y, x + width_pixels, y);
return;
} else {
start_pos.y -= text_line_get_ascent(text_line);
start_pos.x -= text_line_get_alignment_adjustment (text_line, alignment);
dia_transform_coords(renderer->transform,
start_pos.x, start_pos.y, &x, &y);
layout = dia_font_build_layout(text, text_line->font,
dia_transform_length(renderer->transform, text_line->height)/20.0);
#if defined(PANGO_VERSION_ENCODE)
# if (PANGO_VERSION >= PANGO_VERSION_ENCODE(1,16,0))
/* I'd say the former Pango API was broken, i.e. leaky */
# define HAVE_pango_layout_get_line_readonly
# endif
#endif
text_line_adjust_layout_line (text_line,
#if defined(HAVE_pango_layout_get_line_readonly)
pango_layout_get_line_readonly(layout, 0),
#else
pango_layout_get_line(layout, 0),
#endif
scale/20.0);
if (renderer->highlight_color != NULL) {
draw_highlighted_string(renderer, layout, x, y, &gdkcolor);
} else {
#if defined HAVE_FREETYPE
{
FT_Bitmap ftbitmap;
int width, height;
GdkPixbuf *rgba = NULL;
width = dia_transform_length(renderer->transform,
text_line_get_width(text_line));
height = dia_transform_length(renderer->transform,
text_line_get_height(text_line));
if (width > 0) {
int stride;
guchar* pixels;
int i,j;
guint8 *graybitmap;
initialize_ft_bitmap(&ftbitmap, width, height);
pango_ft2_render_layout(&ftbitmap, layout, 0, 0);
graybitmap = ftbitmap.buffer;
rgba = gdk_pixbuf_new(GDK_COLORSPACE_RGB, TRUE, 8, width, height);
stride = gdk_pixbuf_get_rowstride(rgba);
pixels = gdk_pixbuf_get_pixels(rgba);
for (i = 0; i < height; i++) {
for (j = 0; j < width; j++) {
pixels[i*stride+j*4] = gdkcolor.red>>8;
pixels[i*stride+j*4+1] = gdkcolor.green>>8;
pixels[i*stride+j*4+2] = gdkcolor.blue>>8;
pixels[i*stride+j*4+3] = graybitmap[i*ftbitmap.pitch+j];
}
}
g_free(graybitmap);
gdk_draw_pixbuf(renderer->pixmap, renderer->gc, rgba, 0, 0, x, y, width, height, GDK_RGB_DITHER_NONE, 0, 0);
g_object_unref(G_OBJECT(rgba));
}
}
#else
gdk_gc_set_foreground(renderer->gc, &gdkcolor);
gdk_draw_layout(renderer->pixmap, renderer->gc, x, y, layout);
#endif
} /* !higlight_color */
g_object_unref(G_OBJECT(layout));
} /* !greeking */
static void
draw_text_line(DiaRenderer *self,
TextLine *text_line,
Point *pos, Alignment alignment, Color *color)
{
DiaPsFt2Renderer *renderer = DIA_PS_FT2_RENDERER(self);
PangoLayout *layout;
int line, linecount;
double xpos = pos->x, ypos = pos->y;
char *text = text_line_get_string(text_line);
/* TODO: we could probably pass the alignment down to the PS file? */
xpos -= text_line_get_alignment_adjustment (text_line, alignment);
/* Using the global PangoContext does not allow to have renderer specific
* different ones. Or it implies the push/pop _context mess. Anyway just
* get rid of warnings for now. But the local code may be resurreted
* sooner or later... --hb
*/
#define USE_GLOBAL_CONTEXT
#ifndef USE_GLOBAL_CONTEXT
PangoAttrList* list;
PangoAttribute* attr;
guint length;
#endif
if ((!text)||(text == (const char *)(1))) return;
lazy_setcolor(DIA_PS_RENDERER(renderer),color);
#define ANNOYING_SCALE_FACTOR 5.9
/* Make sure the letters aren't too wide. */
#ifdef USE_GLOBAL_CONTEXT
layout = dia_font_build_layout(text, text_line_get_font(text_line),
text_line_get_height(text_line)*ANNOYING_SCALE_FACTOR);
#else
/* approximately what would be required but w/o dia_font_get_context() */
dia_font_set_height(text_line_get_font(text_line),
text_line_get_height(text_line));
layout = pango_layout_new(dia_font_get_context());
length = text ? strlen(text) : 0;
pango_layout_set_text(layout,text,length);
list = pango_attr_list_new();
attr = pango_attr_font_desc_new(dia_font_get_description(text_line_get_font(text_line)));
attr->start_index = 0;
attr->end_index = length;
pango_attr_list_insert(list,attr);
pango_layout_set_attributes(layout,list);
pango_attr_list_unref(list);
pango_layout_set_indent(layout,0);
pango_layout_set_justify(layout,FALSE);
#endif
pango_layout_set_alignment(layout, PANGO_ALIGN_LEFT);
linecount = pango_layout_get_line_count(layout);
for (line = 0; line < linecount; line++) {
PangoLayoutLine *layoutline = pango_layout_get_line(layout, line);
/* Not sure scale is the right one here. */
text_line_adjust_layout_line(text_line, layoutline, ANNOYING_SCALE_FACTOR);
postscript_draw_contour(DIA_PS_RENDERER(renderer),
DPI, /* dpi_x */
layoutline, xpos, ypos);
ypos += 10;/* Some line height thing??? */
}
}
