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themingengine: Refactor drawing code

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... and implement 'double' border-style as proof-of-concept.
This commit is contained in:
Benjamin Otte 2012-01-07 20:50:17 +01:00
parent fbde62d8e7
commit d21e7506e7
1 changed files with 122 additions and 59 deletions
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181
gtk/gtkthemingengine.c
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@ -1378,6 +1378,71 @@ gtk_theming_engine_hide_border_sides (GtkBorder *border,
border->left = 0;
}
static void
render_frame_fill (cairo_t *cr,
GtkRoundedBox *border_box,
GtkBorder *border,
GdkRGBA *colors[4],
guint hidden_side)
{
static const guint current_side[4] = { SIDE_TOP, SIDE_RIGHT, SIDE_BOTTOM, SIDE_LEFT };
GtkRoundedBox padding_box;
guint i, j;
padding_box = *border_box;
_gtk_rounded_box_shrink (&padding_box, border->top, border->right, border->bottom, border->left);
if (hidden_side == 0 &&
gdk_rgba_equal (colors[0], colors[1]) &&
gdk_rgba_equal (colors[0], colors[2]) &&
gdk_rgba_equal (colors[0], colors[3]))
{
gdk_cairo_set_source_rgba (cr, colors[0]);
_gtk_rounded_box_path (border_box, cr);
_gtk_rounded_box_path (&padding_box, cr);
cairo_fill (cr);
}
else
{
for (i = 0; i < 4; i++)
{
if (hidden_side & current_side[i])
continue;
for (j = 0; j < 4; j++)
{
if (hidden_side & current_side[j])
continue;
if (i == j ||
(gdk_rgba_equal (colors[i], colors[j])))
{
/* We were already painted when i == j */
if (i > j)
break;
if (j == 0)
_gtk_rounded_box_path_top (border_box, &padding_box, cr);
else if (j == 1)
_gtk_rounded_box_path_right (border_box, &padding_box, cr);
else if (j == 2)
_gtk_rounded_box_path_bottom (border_box, &padding_box, cr);
else if (j == 3)
_gtk_rounded_box_path_left (border_box, &padding_box, cr);
}
}
/* We were already painted when i == j */
if (i > j)
continue;
gdk_cairo_set_source_rgba (cr, colors[i]);
cairo_fill (cr);
}
}
}
static void
render_frame_internal (GtkThemingEngine *engine,
cairo_t *cr,
@ -1390,7 +1455,7 @@ render_frame_internal (GtkThemingEngine *engine,
{
GtkStateFlags state;
GtkBorderStyle border_style[4];
GtkRoundedBox border_box, padding_box;
GtkRoundedBox border_box;
gdouble progress;
gboolean running;
GtkBorder border;
@ -1446,77 +1511,75 @@ render_frame_internal (GtkThemingEngine *engine,
}
}
if (border_style[0] == GTK_BORDER_STYLE_OUTSET)
color_shade (colors[0], 1.8, colors[0]);
if (border_style[1] == GTK_BORDER_STYLE_INSET)
color_shade (colors[1], 1.8, colors[1]);
if (border_style[2] == GTK_BORDER_STYLE_INSET)
color_shade (colors[2], 1.8, colors[2]);
if (border_style[3] == GTK_BORDER_STYLE_OUTSET)
color_shade (colors[3], 1.8, colors[3]);
_gtk_rounded_box_init_rect (&border_box, x, y, width, height);
_gtk_rounded_box_apply_border_radius (&border_box, engine, state, junction);
cairo_save (cr);
cairo_set_fill_rule (cr, CAIRO_FILL_RULE_EVEN_ODD);
_gtk_rounded_box_init_rect (&border_box, x, y, width, height);
_gtk_rounded_box_apply_border_radius (&border_box, engine, state, junction);
padding_box = border_box;
_gtk_rounded_box_shrink (&padding_box, border.top, border.right, border.bottom, border.left);
if (gdk_rgba_equal (colors[0], colors[1]) &&
gdk_rgba_equal (colors[0], colors[2]) &&
gdk_rgba_equal (colors[0], colors[3]))
for (i = 0; i < 4; i++)
{
gdk_cairo_set_source_rgba (cr, colors[0]);
_gtk_rounded_box_path (&border_box, cr);
_gtk_rounded_box_path (&padding_box, cr);
cairo_fill (cr);
}
else
{
for (i = 0; i < 4; i++)
switch (border_style[i])
{
if (hidden_side & current_side[i])
continue;
case GTK_BORDER_STYLE_NONE:
case GTK_BORDER_STYLE_HIDDEN:
case GTK_BORDER_STYLE_SOLID:
break;
case GTK_BORDER_STYLE_INSET:
if (i == 1 || i == 2)
color_shade (colors[i], 1.8, colors[i]);
break;
case GTK_BORDER_STYLE_OUTSET:
if (i == 0 || i == 3)
color_shade (colors[i], 1.8, colors[i]);
break;
case GTK_BORDER_STYLE_DOTTED:
case GTK_BORDER_STYLE_DASHED:
break;
case GTK_BORDER_STYLE_DOUBLE:
{
GtkBorder double_border;
guint dont_draw = hidden_side;
for (j = 0; j < 4; j++)
{
if (hidden_side & current_side[j])
continue;
if (i == j ||
(gdk_rgba_equal (colors[i], colors[j])))
{
/* We were already painted when i == j */
if (i > j)
break;
if (j == 0)
_gtk_rounded_box_path_top (&border_box, &padding_box, cr);
else if (j == 1)
_gtk_rounded_box_path_right (&border_box, &padding_box, cr);
else if (j == 2)
_gtk_rounded_box_path_bottom (&border_box, &padding_box, cr);
else if (j == 3)
_gtk_rounded_box_path_left (&border_box, &padding_box, cr);
}
}
/* We were already painted when i == j */
if (i > j)
continue;
gdk_cairo_set_source_rgba (cr, colors[i]);
cairo_fill (cr);
for (j = 0; j < 4; j++)
{
if (border_style[j] == GTK_BORDER_STYLE_DOUBLE)
border_style[j] = GTK_BORDER_STYLE_SOLID;
else
dont_draw |= current_side[j];
}
double_border.top = (border.top + 2) / 3;
double_border.right = (border.right + 2) / 3;
double_border.bottom = (border.bottom + 2) / 3;
double_border.left = (border.left + 2) / 3;
render_frame_fill (cr, &border_box, &double_border, colors, dont_draw);
_gtk_rounded_box_shrink (&border_box,
border.top - double_border.top,
border.right - double_border.right,
border.bottom - double_border.bottom,
border.left - double_border.left);
render_frame_fill (cr, &border_box, &double_border, colors, dont_draw);
goto done;
}
case GTK_BORDER_STYLE_GROOVE:
case GTK_BORDER_STYLE_RIDGE:
break;
default:
g_assert_not_reached ();
break;
}
}
render_frame_fill (cr, &border_box, &border, colors, hidden_side);
cairo_restore (cr);
done:
for (i = 0; i < 4; i++)
gdk_rgba_free (colors[i]);
cairo_restore (cr);
}
static void