diff options
Diffstat (limited to 'pango/pangocairo-render.c')
| -rw-r--r-- | pango/pangocairo-render.c | 188 |
1 files changed, 91 insertions, 97 deletions
diff --git a/pango/pangocairo-render.c b/pango/pangocairo-render.c index 2a76a161..533cf638 100644 --- a/pango/pangocairo-render.c +++ b/pango/pangocairo-render.c @@ -689,11 +689,11 @@ pango_cairo_renderer_draw_trapezoid (PangoRenderer *renderer, #define HEIGHT_SQUARES 2.5 static void -draw_error_underline (cairo_t *cr, - double x, - double y, - double width, - double height) +draw_wavy_line (cairo_t *cr, + double x, + double y, + double width, + double height) { double square = height / HEIGHT_SQUARES; double unit_width = (HEIGHT_SQUARES - 1) * square; @@ -742,11 +742,13 @@ draw_error_underline (cairo_t *cr, } static void -pango_cairo_renderer_draw_error_underline (PangoRenderer *renderer, - int x, - int y, - int width, - int height) +pango_cairo_renderer_draw_styled_line (PangoRenderer *renderer, + PangoRenderPart part, + PangoLineStyle style, + int x, + int y, + int width, + int height) { PangoCairoRenderer *crenderer = (PangoCairoRenderer *) (renderer); cairo_t *cr = crenderer->cr; @@ -755,15 +757,68 @@ pango_cairo_renderer_draw_error_underline (PangoRenderer *renderer, { cairo_save (cr); - set_color (crenderer, PANGO_RENDER_PART_UNDERLINE); + set_color (crenderer, part); cairo_new_path (cr); } - draw_error_underline (cr, - crenderer->x_offset + (double)x / PANGO_SCALE, - crenderer->y_offset + (double)y / PANGO_SCALE, - (double)width / PANGO_SCALE, (double)height / PANGO_SCALE); + switch (style) + { + case PANGO_LINE_STYLE_NONE: + break; + + case PANGO_LINE_STYLE_DOTTED: + case PANGO_LINE_STYLE_DASHED: + cairo_save (cr); + cairo_set_line_width (cr, (double)height / PANGO_SCALE); + if (style == PANGO_LINE_STYLE_DOTTED) + { + cairo_set_line_cap (cr, CAIRO_LINE_CAP_ROUND); + cairo_set_dash (cr, (const double []){0., (double)(2 * height) / PANGO_SCALE}, 2, 0.); + } + else + { + cairo_set_line_cap (cr, CAIRO_LINE_CAP_SQUARE); + cairo_set_dash (cr, (const double []){(double)(3 * height) / PANGO_SCALE, (double)(3 * height) / PANGO_SCALE}, 2, 0.); + } + cairo_move_to (cr, + crenderer->x_offset + (double)x / PANGO_SCALE + (double)height / (2 * PANGO_SCALE), + crenderer->y_offset + (double)y / PANGO_SCALE + (double)height / (2 * PANGO_SCALE)); + cairo_line_to (cr, + crenderer->x_offset + (double)x / PANGO_SCALE + (double)width / PANGO_SCALE - (double)height / PANGO_SCALE, + crenderer->y_offset + (double)y / PANGO_SCALE + (double)height / (2 * PANGO_SCALE)); + cairo_stroke (cr); + cairo_restore (cr); + break; + + case PANGO_LINE_STYLE_SOLID: + cairo_rectangle (cr, + crenderer->x_offset + (double)x / PANGO_SCALE, + crenderer->y_offset + (double)y / PANGO_SCALE, + (double)width / PANGO_SCALE, (double)height / PANGO_SCALE); + break; + + case PANGO_LINE_STYLE_DOUBLE: + cairo_rectangle (cr, + crenderer->x_offset + (double)x / PANGO_SCALE, + crenderer->y_offset + (double)y / PANGO_SCALE, + (double)width / PANGO_SCALE, (double)height / (3 * PANGO_SCALE)); + cairo_rectangle (cr, + crenderer->x_offset + (double)x / PANGO_SCALE, + crenderer->y_offset + (double)y / PANGO_SCALE + (double)(2 * height) / (3 * PANGO_SCALE), + (double)width / PANGO_SCALE, (double)height / (3 * PANGO_SCALE)); + break; + + + case PANGO_LINE_STYLE_WAVY: + draw_wavy_line (cr, + crenderer->x_offset + (double)x / PANGO_SCALE, + crenderer->y_offset + (double)y / PANGO_SCALE, + (double)width / PANGO_SCALE, (double)height / PANGO_SCALE); + break; + default: + g_assert_not_reached (); + } if (!crenderer->do_path) { @@ -786,8 +841,8 @@ pango_cairo_renderer_class_init (PangoCairoRendererClass *klass) renderer_class->draw_glyphs = pango_cairo_renderer_draw_glyphs; renderer_class->draw_run = pango_cairo_renderer_draw_run; renderer_class->draw_rectangle = pango_cairo_renderer_draw_rectangle; + renderer_class->draw_styled_line = pango_cairo_renderer_draw_styled_line; renderer_class->draw_trapezoid = pango_cairo_renderer_draw_trapezoid; - renderer_class->draw_error_underline = pango_cairo_renderer_draw_error_underline; } static PangoCairoRenderer *cached_renderer = NULL; /* MT-safe */ @@ -992,30 +1047,6 @@ _pango_cairo_do_layout (cairo_t *cr, release_renderer (crenderer); } -static void -_pango_cairo_do_error_underline (cairo_t *cr, - double x, - double y, - double width, - double height, - gboolean do_path) -{ - /* We don't use a renderer here, for a simple reason: - * the only renderer we can get is the default renderer, that - * is all implemented here, so we shortcircuit and make our - * life way easier. - */ - - if (!do_path) - cairo_new_path (cr); - - draw_error_underline (cr, x, y, width, height); - - if (!do_path) - cairo_fill (cr); -} - - /* public wrapper of above to show or append path */ @@ -1132,35 +1163,6 @@ pango_cairo_show_layout (cairo_t *cr, } /** - * pango_cairo_show_error_underline: - * @cr: a Cairo context - * @x: The X coordinate of one corner of the rectangle - * @y: The Y coordinate of one corner of the rectangle - * @width: Non-negative width of the rectangle - * @height: Non-negative height of the rectangle - * - * Draw a squiggly line in the specified cairo context that approximately - * covers the given rectangle in the style of an underline used to indicate a - * spelling error. - * - * The width of the underline is rounded to an integer - * number of up/down segments and the resulting rectangle is centered in the - * original rectangle. - */ -void -pango_cairo_show_error_underline (cairo_t *cr, - double x, - double y, - double width, - double height) -{ - g_return_if_fail (cr != NULL); - g_return_if_fail ((width >= 0) && (height >= 0)); - - _pango_cairo_do_error_underline (cr, x, y, width, height, FALSE); -} - -/** * pango_cairo_glyph_string_path: * @cr: a Cairo context * @font: a `PangoFont` from a `PangoCairoFontMap` @@ -1184,6 +1186,26 @@ pango_cairo_glyph_string_path (cairo_t *cr, } /** + * pango_cairo_run_path: + * @cr: a Cairo context + * @text: the UTF-8 text that @run refers to + * @run: a `PangoRun` + * + * Adds the text in `PangoRun` to the current path in the + * specified cairo context. + * + * The origin of the glyphs (the left edge of the line) will be + * at the current point of the cairo context. + */ +void +pango_cairo_run_path (cairo_t *cr, + const char *text, + PangoRun *run) +{ + _pango_cairo_do_run (cr, text, run, TRUE); +} + +/** * pango_cairo_line_path: * @cr: a Cairo context * @line: a `PangoLine` @@ -1244,31 +1266,3 @@ pango_cairo_lines_path (cairo_t *cr, _pango_cairo_do_lines (cr, lines, TRUE); } - -/** - * pango_cairo_error_underline_path: - * @cr: a Cairo context - * @x: The X coordinate of one corner of the rectangle - * @y: The Y coordinate of one corner of the rectangle - * @width: Non-negative width of the rectangle - * @height: Non-negative height of the rectangle - * - * Add a squiggly line to the current path in the specified cairo context that - * approximately covers the given rectangle in the style of an underline used - * to indicate a spelling error. - * - * The width of the underline is rounded to an integer number of up/down - * segments and the resulting rectangle is centered in the original rectangle. - */ -void -pango_cairo_error_underline_path (cairo_t *cr, - double x, - double y, - double width, - double height) -{ - g_return_if_fail (cr != NULL); - g_return_if_fail ((width >= 0) && (height >= 0)); - - _pango_cairo_do_error_underline (cr, x, y, width, height, TRUE); -} |