[vte/wip/egmont/bidi: 42/75] refactor box mirroring
- From: Egmont Koblinger <egmontkob src gnome org>
- To: commits-list gnome org
- Cc:
- Subject: [vte/wip/egmont/bidi: 42/75] refactor box mirroring
- Date: Wed, 19 Sep 2018 08:16:46 +0000 (UTC)
commit 56cb9c3d814cfcb07b1de8ccfdabf1307cf6d91a
Author: Egmont Koblinger <egmont gmail com>
Date: Sat Aug 25 02:59:38 2018 +0200
refactor box mirroring
src/bidi.cc | 30 ++++++++++++++++++++++++++++++
src/bidi.hh | 2 ++
src/vtedraw.cc | 32 ++++++++++----------------------
3 files changed, 42 insertions(+), 22 deletions(-)
---
diff --git a/src/bidi.cc b/src/bidi.cc
index e7713912..032e7e51 100644
--- a/src/bidi.cc
+++ b/src/bidi.cc
@@ -467,3 +467,33 @@ next_line:
#endif /* !WITH_FRIBIDI */
}
+
+gboolean vte_bidi_get_mirror_char (gunichar ch, gboolean mirror_box_drawing, gunichar *mirrored_ch)
+{
+ unsigned char mirrored_2500[0x80] = {
+ 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x10, 0x11, 0x12,
0x13,
+ 0x0c, 0x0d, 0x0e, 0x0f, 0x18, 0x19, 0x1a, 0x1b, 0x14, 0x15, 0x16, 0x17, 0x24, 0x25, 0x26,
0x27,
+ 0x28, 0x29, 0x2a, 0x2b, 0x1c, 0x1d, 0x1e, 0x1f, 0x20, 0x21, 0x22, 0x23, 0x2c, 0x2e, 0x2d,
0x2f,
+ 0x30, 0x32, 0x31, 0x33, 0x34, 0x36, 0x35, 0x37, 0x38, 0x3a, 0x39, 0x3b, 0x3c, 0x3e, 0x3d,
0x3f,
+ 0x40, 0x4a, 0x42, 0x44, 0x43, 0x46, 0x45, 0x47, 0x48, 0x4a, 0x49, 0x4b, 0x4c, 0x4d, 0x4e,
0x4f,
+ 0x50, 0x51, 0x55, 0x56, 0x57, 0x52, 0x53, 0x54, 0x5b, 0x5c, 0x5d, 0x58, 0x59, 0x5a, 0x61,
0x62,
+ 0x63, 0x5e, 0x5f, 0x60, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6e, 0x6d,
0x70,
+ 0x6f, 0x72, 0x71, 0x73, 0x76, 0x75, 0x74, 0x77, 0x7a, 0x79, 0x78, 0x7b, 0x7e, 0x7d, 0x7c,
0x7f };
+
+ if (G_UNLIKELY (mirror_box_drawing && ch >= 0x2500 && ch < 0x2580)) {
+ gunichar mir = 0x2500 + mirrored_2500[ch - 0x2500];
+ if (mirrored_ch)
+ *mirrored_ch = mir;
+ return mir == ch;
+ }
+
+#ifdef WITH_FRIBIDI
+ /* Prefer the FriBidi variant as that's more likely
+ * to be in sync with the rest of our BiDi stuff. */
+ return fribidi_get_mirror_char (ch, mirrored_ch);
+#else
+ /* Fall back to glib, so that we still get mirrored
+ * characters in explicit RTL mode. */
+ return g_unichar_get_mirror_char (ch, mirrored_ch);
+#endif
+}
diff --git a/src/bidi.hh b/src/bidi.hh
index ed53d472..46a73bf4 100644
--- a/src/bidi.hh
+++ b/src/bidi.hh
@@ -86,4 +86,6 @@ private:
G_BEGIN_DECLS
+gboolean vte_bidi_get_mirror_char (gunichar ch, gboolean mirror_box_drawing, gunichar *mirrored_ch);
+
G_END_DECLS
diff --git a/src/vtedraw.cc b/src/vtedraw.cc
index 2da22038..bf912d84 100644
--- a/src/vtedraw.cc
+++ b/src/vtedraw.cc
@@ -26,10 +26,7 @@
#include <glib.h>
#include <gtk/gtk.h>
-#ifdef WITH_FRIBIDI
-#include <fribidi.h>
-#endif
-
+#include "bidi.hh"
#include "vtedraw.hh"
#include "vtedefines.hh"
#include "debug.h"
@@ -1000,7 +997,7 @@ _vte_draw_unichar_is_local_graphic(vteunistr c)
/* Draw the graphic representation of a line-drawing or special graphics
* character. */
static void
-_vte_draw_terminal_draw_graphic(struct _vte_draw *draw, vteunistr c, gboolean mirror, vte::color::rgb const*
fg,
+_vte_draw_terminal_draw_graphic(struct _vte_draw *draw, vteunistr c, vte::color::rgb const* fg,
gint x, gint y,
gint font_width, gint columns, gint font_height)
{
@@ -1168,16 +1165,15 @@ _vte_draw_terminal_draw_graphic(struct _vte_draw *draw, vteunistr c, gboolean mi
upper_half - light_line_width / 2 + light_line_width,
upper_half - heavy_line_width / 2 + heavy_line_width,
height};
- int xi, xi_bidi, yi;
+ int xi, yi;
cairo_set_line_width(cr, 0);
for (yi = 4; yi >= 0; yi--) {
for (xi = 4; xi >= 0; xi--) {
if (bitmap & 1) {
- xi_bidi = mirror ? 4 - xi : xi;
cairo_rectangle(cr,
- x + xboundaries[xi_bidi],
+ x + xboundaries[xi],
y + yboundaries[yi],
- xboundaries[xi_bidi + 1] - xboundaries[xi_bidi],
+ xboundaries[xi + 1] - xboundaries[xi],
yboundaries[yi + 1] - yboundaries[yi]);
cairo_fill(cr);
}
@@ -1250,7 +1246,7 @@ _vte_draw_terminal_draw_graphic(struct _vte_draw *draw, vteunistr c, gboolean mi
case 0x256f: /* box drawings light arc up and left */
case 0x2570: /* box drawings light arc up and right */
{
- const guint v = (c - 0x256d) ^ (mirror ? 1 : 0);
+ const guint v = c - 0x256d;
int line_width;
int radius;
@@ -1300,12 +1296,12 @@ _vte_draw_terminal_draw_graphic(struct _vte_draw *draw, vteunistr c, gboolean mi
cairo_set_line_cap(cr, CAIRO_LINE_CAP_ROUND);
cairo_set_line_width(cr, light_line_width);
adjust = light_line_width / 2.;
- if (c != (mirror ? 0x2572 : 0x2571)) {
+ if (c != 0x2571) {
cairo_move_to(cr, x + adjust, y + adjust);
cairo_line_to(cr, xright - adjust, ybottom - adjust);
cairo_stroke(cr);
}
- if (c != (mirror ? 0x2571 : 0x2572)) {
+ if (c != 0x2572) {
cairo_move_to(cr, xright - adjust, y + adjust);
cairo_line_to(cr, x + adjust, ybottom - adjust);
cairo_stroke(cr);
@@ -1482,15 +1478,7 @@ _vte_draw_text_internal (struct _vte_draw *draw,
if (G_UNLIKELY (requests[i].mirror)) {
// FIXME what if 'c' is actually a real vteunistr?
-#ifdef WITH_FRIBIDI
- /* Prefer the FriBidi variant as that's more likely
- * to be in sync with the rest of our BiDi stuff. */
- fribidi_get_mirror_char (c, &c);
-#else
- /* Fall back to glib, so that we still get mirrored
- * characters in explicit RTL mode. */
- g_unichar_get_mirror_char (c, &c);
-#endif
+ vte_bidi_get_mirror_char (c, requests[i].box_mirror, &c);
}
struct unistr_info *uinfo = font_info_get_unistr_info (font, c);
@@ -1502,7 +1490,7 @@ _vte_draw_text_internal (struct _vte_draw *draw,
y = requests[i].y + draw->char_spacing.top + font->ascent;
if (_vte_draw_unichar_is_local_graphic(c)) {
- _vte_draw_terminal_draw_graphic(draw, c, requests[i].mirror &&
requests[i].box_mirror, color,
+ _vte_draw_terminal_draw_graphic(draw, c, color,
requests[i].x, requests[i].y,
font->width, requests[i].columns, font->height);
continue;
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