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GtkScale: Normalize mark positions

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This is in preparation for making scale marks styling better.
As a side-effect, TOP and LEFT position are treated the same now,
as well as BOTTOM and RIGHT.

Based on a patch by Bastien Nocera,
https://bugzilla.gnome.org/show_bug.cgi?id=643685
This commit is contained in:
Matthias Clasen 2011-03-03 16:30:21 -05:00
parent a47a7abe23
commit 2a9d130ed2
1 changed files with 35 additions and 31 deletions
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66
gtk/gtkscale.c
View File

@ -96,7 +96,7 @@ struct _GtkScaleMark
{
gdouble value;
gchar *markup;
GtkPositionType position;
GtkPositionType position; /* always GTK_POS_TOP or GTK_POS_BOTTOM */
};
enum {
@ -792,17 +792,17 @@ gtk_scale_get_range_border (GtkRange *range,
NULL);
gtk_scale_get_mark_label_size (scale, GTK_POS_TOP, &n1, &w1, &h1, &n2, &w2, &h2);
if (gtk_orientable_get_orientation (GTK_ORIENTABLE (scale)) == GTK_ORIENTATION_HORIZONTAL)
{
gtk_scale_get_mark_label_size (scale, GTK_POS_TOP, &n1, &w1, &h1, &n2, &w2, &h2);
if (n1 > 0)
border->top += h1 + value_spacing + slider_width / 2;
if (n2 > 0)
border->bottom += h2 + value_spacing + slider_width / 2;
border->bottom += h2 + value_spacing + slider_width / 2;
}
else
{
gtk_scale_get_mark_label_size (scale, GTK_POS_LEFT, &n1, &w1, &h1, &n2, &w2, &h2);
if (n1 > 0)
border->left += w1 + value_spacing + slider_width / 2;
if (n2 > 0)
@ -897,8 +897,8 @@ gtk_scale_get_mark_label_size (GtkScale *scale,
pango_layout_set_markup (layout, mark->markup, -1);
pango_layout_get_pixel_extents (layout, NULL, &logical_rect);
w = logical_rect.width;
h = logical_rect.height;
w = logical_rect.width;
h = logical_rect.height;
}
else
{
@ -991,7 +991,7 @@ gtk_scale_get_preferred_height (GtkWidget *widget,
gtk_widget_style_get (widget, "slider-length", &slider_length, NULL);
gtk_scale_get_mark_label_size (GTK_SCALE (widget), GTK_POS_LEFT, &n1, &w1, &h1, &n2, &w2, &h2);
gtk_scale_get_mark_label_size (GTK_SCALE (widget), GTK_POS_TOP, &n1, &w1, &h1, &n2, &w2, &h2);
h1 = (n1 - 1) * h1 + MAX (h1, slider_length);
h2 = (n2 - 1) * h1 + MAX (h2, slider_length);
h = MAX (h1, h2);
@ -1021,7 +1021,7 @@ find_next_pos (GtkWidget *widget,
}
gtk_widget_get_allocation (widget, &allocation);
if (pos == GTK_POS_TOP || pos == GTK_POS_BOTTOM)
if (gtk_orientable_get_orientation (GTK_ORIENTABLE (widget)) == GTK_ORIENTATION_HORIZONTAL)
return allocation.width;
else
return allocation.height;
@ -1095,15 +1095,14 @@ gtk_scale_draw (GtkWidget *widget,
y1 = range_rect.y + range_rect.height;
y2 = y1 + slider_width / 2;
min_pos = min_pos_after;
max_pos = find_next_pos (widget, m, marks + i, GTK_POS_TOP, 0) - min_sep;
max_pos = find_next_pos (widget, m, marks + i, GTK_POS_BOTTOM, 1) - min_sep;
}
gtk_style_context_save (context);
gtk_style_context_add_class (context, GTK_STYLE_CLASS_MARK);
gtk_style_context_set_state (context, state);
gtk_render_line (context, cr,
x1, y1, x1, y2);
gtk_render_line (context, cr, x1, y1, x1, y2);
if (mark->markup)
{
@ -1128,27 +1127,26 @@ gtk_scale_draw (GtkWidget *widget,
min_pos_after = x3 + logical_rect.width + min_sep;
}
gtk_render_layout (context, cr,
x3, y3, layout);
gtk_render_layout (context, cr, x3, y3, layout);
}
gtk_style_context_restore (context);
}
else
{
if (mark->position == GTK_POS_LEFT)
if (mark->position == GTK_POS_TOP)
{
x1 = range_rect.x;
x2 = range_rect.x - slider_width / 2;
min_pos = min_pos_before;
max_pos = find_next_pos (widget, m, marks + i, GTK_POS_LEFT, 1) - min_sep;
max_pos = find_next_pos (widget, m, marks + i, GTK_POS_TOP, 1) - min_sep;
}
else
{
x1 = range_rect.x + range_rect.width;
x2 = range_rect.x + range_rect.width + slider_width / 2;
min_pos = min_pos_after;
max_pos = find_next_pos (widget, m, marks + i, GTK_POS_LEFT, 0) - min_sep;
max_pos = find_next_pos (widget, m, marks + i, GTK_POS_BOTTOM, 1) - min_sep;
}
y1 = marks[i];
@ -1156,8 +1154,7 @@ gtk_scale_draw (GtkWidget *widget,
gtk_style_context_add_class (context, GTK_STYLE_CLASS_MARK);
gtk_style_context_set_state (context, state);
gtk_render_line (context, cr,
x1, y1, x2, y1);
gtk_render_line (context, cr, x1, y1, x2, y1);
if (mark->markup)
{
@ -1171,7 +1168,7 @@ gtk_scale_draw (GtkWidget *widget,
y3 = max_pos - logical_rect.height;
if (y3 < 0)
y3 = 0;
if (mark->position == GTK_POS_LEFT)
if (mark->position == GTK_POS_TOP)
{
x3 = x2 - value_spacing - logical_rect.width;
min_pos_before = y3 + logical_rect.height + min_sep;
@ -1182,8 +1179,7 @@ gtk_scale_draw (GtkWidget *widget,
min_pos_after = y3 + logical_rect.height + min_sep;
}
gtk_render_layout (context, cr,
x3, y3, layout);
gtk_render_layout (context, cr, x3, y3, layout);
}
gtk_style_context_restore (context);
@ -1490,22 +1486,22 @@ compare_marks (gpointer a, gpointer b)
/**
* gtk_scale_add_mark:
* @scale: a #GtkScale
* @value: the value at which the mark is placed, must be between
* @value: the value at which the mark is placed, must be between
* the lower and upper limits of the scales' adjustment
* @position: where to draw the mark. For a horizontal scale, #GTK_POS_TOP
* is drawn above the scale, anything else below. For a vertical scale,
* #GTK_POS_LEFT is drawn to the left of the scale, anything else to the
* right.
* and %GTK_POS_LEFT are drawn above the scale, anything else below.
* For a vertical scale, #GTK_POS_LEFT and %GTK_POS_TOP are drawn to
* the left of the scale, anything else to the right.
* @markup: (allow-none): Text to be shown at the mark, using <link linkend="PangoMarkupFormat">Pango markup</link>, or %NULL
*
*
* Adds a mark at @value.
* Adds a mark at @value.
*
* A mark is indicated visually by drawing a tick mark next to the scale,
* and GTK+ makes it easy for the user to position the scale exactly at the
* A mark is indicated visually by drawing a tick mark next to the scale,
* and GTK+ makes it easy for the user to position the scale exactly at the
* marks value.
*
* If @markup is not %NULL, text is shown next to the tick mark.
* If @markup is not %NULL, text is shown next to the tick mark.
*
* To remove marks from a scale, use gtk_scale_clear_marks().
*
@ -1530,7 +1526,11 @@ gtk_scale_add_mark (GtkScale *scale,
mark = g_new (GtkScaleMark, 1);
mark->value = value;
mark->markup = g_strdup (markup);
mark->position = position;
if (position == GTK_POS_LEFT ||
position == GTK_POS_TOP)
mark->position = GTK_POS_TOP;
else
mark->position = GTK_POS_BOTTOM;
priv->marks = g_slist_insert_sorted (priv->marks, mark,
(GCompareFunc) compare_marks);
@ -1671,7 +1671,11 @@ marks_start_element (GMarkupParseContext *context,
mark = g_slice_new (MarkData);
mark->value = value;
mark->position = position;
if (position == GTK_POS_LEFT ||
position == GTK_POS_TOP)
mark->position = GTK_POS_TOP;
else
mark->position = GTK_POS_BOTTOM;
mark->markup = g_string_new ("");
mark->context = g_strdup (msg_context);
mark->translatable = translatable;