static void cdtext(cdCtxCanvas *ctxcanvas, int x, int y, const char *s, int len)
{
PangoFontMetrics* metrics;
int w, h, desc, dir = -1;
int ox = x, oy = y;
pango_layout_set_text(ctxcanvas->fontlayout, sStrConvertToUTF8(ctxcanvas, s, len), -1);
pango_layout_get_pixel_size(ctxcanvas->fontlayout, &w, &h);
metrics = pango_context_get_metrics(ctxcanvas->fontcontext, ctxcanvas->fontdesc, pango_context_get_language(ctxcanvas->fontcontext));
desc = (((pango_font_metrics_get_descent(metrics)) + PANGO_SCALE/2) / PANGO_SCALE);
switch (ctxcanvas->canvas->text_alignment)
{
case CD_BASE_RIGHT:
case CD_NORTH_EAST:
case CD_EAST:
case CD_SOUTH_EAST:
x = x - w;
break;
case CD_BASE_CENTER:
case CD_CENTER:
case CD_NORTH:
case CD_SOUTH:
x = x - w/2;
break;
case CD_BASE_LEFT:
case CD_NORTH_WEST:
case CD_WEST:
case CD_SOUTH_WEST:
x = x;
break;
}
if (ctxcanvas->canvas->invert_yaxis)
dir = 1;
switch (ctxcanvas->canvas->text_alignment)
{
case CD_BASE_LEFT:
case CD_BASE_CENTER:
case CD_BASE_RIGHT:
y = y - (dir*h - desc);
break;
case CD_SOUTH_EAST:
case CD_SOUTH_WEST:
case CD_SOUTH:
y = y - (dir*h);
break;
case CD_NORTH_EAST:
case CD_NORTH:
case CD_NORTH_WEST:
y = y;
break;
case CD_CENTER:
case CD_EAST:
case CD_WEST:
y = y - (dir*(h/2));
break;
}
if(!ctxcanvas->canvas->use_matrix)
{
ctxcanvas->fontmatrix.xx = 1; ctxcanvas->fontmatrix.xy = 0;
ctxcanvas->fontmatrix.yx = 0; ctxcanvas->fontmatrix.yy = 1;
ctxcanvas->fontmatrix.x0 = 0; ctxcanvas->fontmatrix.y0 = 0;
}
if (ctxcanvas->canvas->use_matrix || ctxcanvas->canvas->text_orientation)
{
PangoRectangle rect;
double angle = ctxcanvas->canvas->text_orientation;
if (ctxcanvas->canvas->text_orientation)
pango_matrix_rotate(&ctxcanvas->fontmatrix, angle);
pango_context_set_matrix (ctxcanvas->fontcontext, &ctxcanvas->fontmatrix);
pango_layout_context_changed (ctxcanvas->fontlayout);
pango_layout_get_pixel_extents(ctxcanvas->fontlayout, NULL, &rect);
#if PANGO_VERSION_CHECK(1,16,0)
pango_matrix_transform_pixel_rectangle(&ctxcanvas->fontmatrix, &rect);
#endif
if (ctxcanvas->canvas->text_orientation)
{
double cos_angle = cos(angle*CD_DEG2RAD);
double sin_angle = sin(angle*CD_DEG2RAD);
cdRotatePoint(ctxcanvas->canvas, x, y, ox, oy, &x, &y, sin_angle, cos_angle);
}
if (ctxcanvas->canvas->use_matrix)
cdMatrixTransformPoint(ctxcanvas->xmatrix, x, y, &x, &y);
/* Defines the new position (X,Y), considering the Pango rectangle transformed */
x += (int)rect.x;
y += (int)rect.y;
}
cdgdkCheckSolidStyle(ctxcanvas, 1);
if (ctxcanvas->canvas->new_region)
{
GdkRegion *rgn;
gint *idx;
gint range;
pango_layout_line_get_x_ranges(pango_layout_get_line(ctxcanvas->fontlayout, 0), 0, len, &idx, &range);
/* TODO: this is only the bounding box of the layout, not the text itself,
must transform the text into a polygon. */
rgn = gdk_pango_layout_get_clip_region(ctxcanvas->fontlayout, x, y, idx, range);
sCombineRegion(ctxcanvas, rgn);
}
else
gdk_draw_layout(ctxcanvas->wnd, ctxcanvas->gc, x, y, ctxcanvas->fontlayout);
pango_context_set_matrix(ctxcanvas->fontcontext, NULL);
cdgdkCheckSolidStyle(ctxcanvas, 0);
pango_font_metrics_unref(metrics);
}
void iupdrvDrawText(IdrawCanvas* dc, const char* text, int len, int x, int y, int w, int h, long color, const char* font, int flags, double text_orientation)
{
PangoLayout* fontlayout = (PangoLayout*)iupgtkGetPangoLayout(font);
PangoAlignment alignment = PANGO_ALIGN_LEFT;
GdkColor c;
PangoContext* fontcontext = NULL;
int layout_w = w, layout_h = h;
int layout_center = flags & IUP_DRAW_LAYOUTCENTER;
if (text_orientation && layout_center)
iupDrawGetTextInnerBounds(w, h, text_orientation, &layout_w, &layout_h);
iupgdkColorSet(&c, color);
gdk_gc_set_rgb_fg_color(dc->pixmap_gc, &c);
text = iupgtkStrConvertToSystemLen(text, &len);
pango_layout_set_text(fontlayout, text, len);
if (flags & IUP_DRAW_RIGHT)
alignment = PANGO_ALIGN_RIGHT;
else if (flags & IUP_DRAW_CENTER)
alignment = PANGO_ALIGN_CENTER;
if (flags & IUP_DRAW_WRAP)
{
pango_layout_set_width(fontlayout, iupGTK_PIXELS2PANGOUNITS(layout_w));
#ifdef PANGO_VERSION_CHECK
#if PANGO_VERSION_CHECK(1,2,0)
pango_layout_set_height(fontlayout, iupGTK_PIXELS2PANGOUNITS(layout_h));
#endif
#endif
}
else if (flags & IUP_DRAW_ELLIPSIS)
{
pango_layout_set_width(fontlayout, iupGTK_PIXELS2PANGOUNITS(layout_w));
#ifdef PANGO_VERSION_CHECK
#if PANGO_VERSION_CHECK(1,2,0)
pango_layout_set_height(fontlayout, iupGTK_PIXELS2PANGOUNITS(layout_h));
#endif
#endif
pango_layout_set_ellipsize(fontlayout, PANGO_ELLIPSIZE_END);
}
pango_layout_set_alignment(fontlayout, alignment);
if (flags & IUP_DRAW_CLIP)
{
GdkRectangle rect;
rect.x = x;
rect.y = y;
rect.width = w;
rect.height = h;
gdk_gc_set_clip_rectangle(dc->pixmap_gc, &rect);
}
if (text_orientation)
{
PangoRectangle rect;
PangoMatrix fontmatrix = PANGO_MATRIX_INIT;
fontcontext = pango_layout_get_context(fontlayout);
pango_matrix_rotate(&fontmatrix, text_orientation);
pango_context_set_matrix(fontcontext, &fontmatrix);
pango_layout_context_changed(fontlayout);
pango_layout_get_pixel_extents(fontlayout, NULL, &rect);
#ifdef PANGO_VERSION_CHECK
#if PANGO_VERSION_CHECK(1,16,0)
pango_matrix_transform_pixel_rectangle(&fontmatrix, &rect);
#endif
#endif
/* Adjust the position considering the Pango rectangle transformed */
if (layout_center)
{
x += (w - rect.width) / 2;
y += (h - rect.height) / 2;
}
else
{
x += (int)rect.x;
y += (int)rect.y;
}
}
gdk_draw_layout(dc->pixmap, dc->pixmap_gc, x, y, fontlayout);
/* restore settings */
if ((flags & IUP_DRAW_WRAP) || (flags & IUP_DRAW_ELLIPSIS))
{
pango_layout_set_width(fontlayout, -1);
#ifdef PANGO_VERSION_CHECK
#if PANGO_VERSION_CHECK(1,2,0)
pango_layout_set_height(fontlayout, -1);
#endif
#endif
}
if (flags & IUP_DRAW_ELLIPSIS)
pango_layout_set_ellipsize(fontlayout, PANGO_ELLIPSIZE_NONE);
if (flags & IUP_DRAW_CLIP)
gdk_gc_set_clip_region(dc->pixmap_gc, NULL);
if (text_orientation)
pango_context_set_matrix(fontcontext, NULL);
}
