static void
set_linestyle (DiaRenderer *object, LineStyle mode, real length)
{
DiaGdkRenderer *renderer = DIA_GDK_RENDERER (object);
/* dot = 10% of len */
real ddisp_len;
ddisp_len =
dia_transform_length(renderer->transform, length);
renderer->dash_length = (int)floor(ddisp_len+0.5);
renderer->dot_length = (int)floor(ddisp_len*0.1+0.5);
if (renderer->dash_length<=0)
renderer->dash_length = 1;
if (renderer->dash_length>255)
renderer->dash_length = 255;
if (renderer->dot_length<=0)
renderer->dot_length = 1;
if (renderer->dot_length>255)
renderer->dot_length = 255;
renderer->saved_line_style = mode;
switch(mode) {
case LINESTYLE_DEFAULT:
case LINESTYLE_SOLID:
renderer->line_style = GDK_LINE_SOLID;
break;
case LINESTYLE_DASHED:
renderer->line_style = GDK_LINE_ON_OFF_DASH;
dia_gdk_renderer_set_dashes(renderer, 0);
break;
case LINESTYLE_DASH_DOT:
renderer->line_style = GDK_LINE_ON_OFF_DASH;
dia_gdk_renderer_set_dashes(renderer, 0);
break;
case LINESTYLE_DASH_DOT_DOT:
renderer->line_style = GDK_LINE_ON_OFF_DASH;
dia_gdk_renderer_set_dashes(renderer, 0);
break;
case LINESTYLE_DOTTED:
renderer->line_style = GDK_LINE_ON_OFF_DASH;
dia_gdk_renderer_set_dashes(renderer, 0);
break;
}
gdk_gc_set_line_attributes(renderer->gc,
renderer->line_width,
renderer->line_style,
renderer->cap_style,
renderer->join_style);
}
static void
set_dashlength (DiaRenderer *object, real length)
{
DiaGdkRenderer *renderer = DIA_GDK_RENDERER (object);
/* dot = 10% of len */
real ddisp_len;
ddisp_len =
dia_transform_length(renderer->transform, length);
renderer->dash_length = (int)floor(ddisp_len+0.5);
renderer->dot_length = (int)floor(ddisp_len*0.1+0.5);
if (renderer->dash_length<=0)
renderer->dash_length = 1;
if (renderer->dash_length>255)
renderer->dash_length = 255;
if (renderer->dot_length<=0)
renderer->dot_length = 1;
if (renderer->dot_length>255)
renderer->dot_length = 255;
set_linestyle(object, renderer->saved_line_style);
}
static void
set_linewidth (DiaRenderer *object, real linewidth)
{
DiaGdkRenderer *renderer = DIA_GDK_RENDERER (object);
if (renderer->highlight_color != NULL) {
/* 6 pixels wide -> 3 pixels beyond normal obj */
real border = dia_untransform_length(renderer->transform, 6);
linewidth += border;
}
/* 0 == hairline **/
renderer->line_width =
dia_transform_length(renderer->transform, linewidth);
if (renderer->line_width<=0)
renderer->line_width = 1; /* Minimum 1 pixel. */
gdk_gc_set_line_attributes(renderer->gc,
renderer->line_width,
renderer->line_style,
renderer->cap_style,
renderer->join_style);
}
/** 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 */
