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-rw-r--r--src/widgets/ruler.cpp195
1 files changed, 135 insertions, 60 deletions
diff --git a/src/widgets/ruler.cpp b/src/widgets/ruler.cpp
index 77332067e..2db84339e 100644
--- a/src/widgets/ruler.cpp
+++ b/src/widgets/ruler.cpp
@@ -40,6 +40,7 @@ struct _SPRulerPrivate
GdkWindow *input_window;
cairo_surface_t *backing_store;
+ PangoLayout *layout;
SPRulerMetric *metric;
@@ -58,44 +59,47 @@ enum {
PROP_METRIC
};
-static void sp_ruler_set_property (GObject *object,
- guint prop_id,
- const GValue *value,
- GParamSpec *pspec);
-static void sp_ruler_get_property (GObject *object,
- guint prop_id,
- GValue *value,
- GParamSpec *pspec);
-static void sp_ruler_realize (GtkWidget *widget);
-static void sp_ruler_unrealize (GtkWidget *widget);
-static void sp_ruler_map (GtkWidget *widget);
-static void sp_ruler_unmap (GtkWidget *widget);
-static void sp_ruler_size_request (GtkWidget *widget,
- GtkRequisition *requisition);
+static void sp_ruler_set_property (GObject *object,
+ guint prop_id,
+ const GValue *value,
+ GParamSpec *pspec);
+static void sp_ruler_get_property (GObject *object,
+ guint prop_id,
+ GValue *value,
+ GParamSpec *pspec);
+static void sp_ruler_realize (GtkWidget *widget);
+static void sp_ruler_unrealize (GtkWidget *widget);
+static void sp_ruler_map (GtkWidget *widget);
+static void sp_ruler_unmap (GtkWidget *widget);
+static void sp_ruler_size_request (GtkWidget *widget,
+ GtkRequisition *requisition);
#if GTK_CHECK_VERSION(3,0,0)
-static void sp_ruler_get_preferred_width (GtkWidget *widget,
- gint *minimal_width,
- gint *natural_width);
+static void sp_ruler_get_preferred_width (GtkWidget *widget,
+ gint *minimal_width,
+ gint *natural_width);
-static void sp_ruler_get_preferred_height (GtkWidget *widget,
- gint *minimal_height,
- gint *natural_height);
+static void sp_ruler_get_preferred_height (GtkWidget *widget,
+ gint *minimal_height,
+ gint *natural_height);
#endif
-static void sp_ruler_size_allocate (GtkWidget *widget,
- GtkAllocation *allocation);
-static gboolean sp_ruler_motion_notify (GtkWidget *widget,
- GdkEventMotion *event);
-static gboolean sp_ruler_draw (GtkWidget *widget,
- cairo_t *cr);
+static void sp_ruler_size_allocate (GtkWidget *widget,
+ GtkAllocation *allocation);
+static gboolean sp_ruler_motion_notify (GtkWidget *widget,
+ GdkEventMotion *event);
+static gboolean sp_ruler_draw (GtkWidget *widget,
+ cairo_t *cr);
#if !GTK_CHECK_VERSION(3,0,0)
-static gboolean sp_ruler_expose (GtkWidget *widget,
- GdkEventExpose *event);
+static gboolean sp_ruler_expose (GtkWidget *widget,
+ GdkEventExpose *event);
#endif
-static void sp_ruler_draw_ticks (SPRuler *ruler);
-static void sp_ruler_draw_pos (SPRuler *ruler);
-static void sp_ruler_make_pixmap (SPRuler *ruler);
+static void sp_ruler_draw_ticks (SPRuler *ruler);
+static void sp_ruler_draw_pos (SPRuler *ruler);
+static void sp_ruler_make_pixmap (SPRuler *ruler);
+
+static PangoLayout * sp_ruler_get_layout (GtkWidget *widget,
+ const gchar *text);
#define SP_RULER_GET_PRIVATE(obj) (G_TYPE_INSTANCE_GET_PRIVATE ((obj), SP_TYPE_RULER, SPRulerPrivate))
@@ -455,6 +459,12 @@ sp_ruler_unrealize(GtkWidget *widget)
cairo_surface_destroy (priv->backing_store);
priv->backing_store = NULL;
}
+
+ if (priv->layout)
+ {
+ g_object_unref (priv->layout);
+ priv->layout = NULL;
+ }
if (priv->input_window)
{
@@ -487,10 +497,19 @@ sp_ruler_unmap (GtkWidget *widget)
GTK_WIDGET_CLASS (sp_ruler_parent_class)->unmap (widget);
}
-static void sp_ruler_size_request(GtkWidget *widget,
- GtkRequisition *requisition)
+static void
+sp_ruler_size_request (GtkWidget *widget,
+ GtkRequisition *requisition)
{
SPRulerPrivate *priv = SP_RULER_GET_PRIVATE (widget);
+ PangoLayout *layout;
+ PangoRectangle ink_rect;
+ gint size;
+
+ layout = sp_ruler_get_layout (widget, "0123456789");
+ pango_layout_get_pixel_extents (layout, &ink_rect, NULL);
+
+ size = 2 + ink_rect.height * 1.7;
#if GTK_CHECK_VERSION(3,0,0)
GtkStyleContext *context = gtk_widget_get_style_context (widget);
@@ -508,19 +527,19 @@ static void sp_ruler_size_request(GtkWidget *widget,
{
#if GTK_CHECK_VERSION(3,0,0)
requisition->width += 1;
- requisition->height += RULER_WIDTH;
+ requisition->height += size;
#else
requisition->width = style->xthickness * 2 + 1;
- requisition->height = style->ythickness * 2 + RULER_WIDTH;
+ requisition->height = style->ythickness * 2 + size;
#endif
}
else
{
#if GTK_CHECK_VERSION(3,0,0)
- requisition->width += RULER_WIDTH;
+ requisition->width += size;
requisition->height += 1;
#else
- requisition->width = style->xthickness * 2 + RULER_WIDTH;
+ requisition->width = style->xthickness * 2 + size;
requisition->height = style->ythickness * 2 + 1;
#endif
}
@@ -561,10 +580,10 @@ sp_ruler_size_allocate (GtkWidget *widget,
}
}
-
#if !GTK_CHECK_VERSION(3,0,0)
-static gboolean sp_ruler_expose(GtkWidget *widget,
- GdkEventExpose *event)
+static gboolean
+sp_ruler_expose (GtkWidget *widget,
+ GdkEventExpose *event)
{
cairo_t *cr = gdk_cairo_create(gtk_widget_get_window(widget));
GtkAllocation allocation;
@@ -583,10 +602,9 @@ static gboolean sp_ruler_expose(GtkWidget *widget,
}
#endif
-
-
-static gboolean sp_ruler_draw(GtkWidget *widget,
- cairo_t *cr)
+static gboolean
+sp_ruler_draw (GtkWidget *widget,
+ cairo_t *cr)
{
SPRuler *ruler = SP_RULER (widget);
SPRulerPrivate *priv = SP_RULER_GET_PRIVATE (ruler);
@@ -601,7 +619,6 @@ static gboolean sp_ruler_draw(GtkWidget *widget,
return FALSE;
}
-
static void
sp_ruler_make_pixmap (SPRuler *ruler)
{
@@ -621,7 +638,6 @@ sp_ruler_make_pixmap (SPRuler *ruler)
allocation.height);
}
-
static void
sp_ruler_draw_pos (SPRuler *ruler)
{
@@ -870,11 +886,13 @@ sp_ruler_draw_ticks (SPRuler *ruler)
gdouble start, end, cur;
gchar unit_str[32];
gint digit_height;
+ gint digit_offset;
gchar digit_str[2] = { '\0', '\0' };
gint text_size;
gint pos;
gdouble max_size;
PangoLayout *layout;
+ PangoRectangle logical_rect, ink_rect;
if (! gtk_widget_is_drawable (widget))
return;
@@ -888,14 +906,11 @@ sp_ruler_draw_ticks (SPRuler *ruler)
ythickness = style->ythickness;
#endif
- PangoContext *pango_context = gtk_widget_get_pango_context (widget);
- layout = pango_layout_new (pango_context);
- PangoFontDescription *fs = pango_font_description_new ();
- pango_font_description_set_size (fs, RULER_FONT_SIZE);
- pango_layout_set_font_description (layout, fs);
- pango_font_description_free (fs);
-
- digit_height = (gint) floor (RULER_FONT_SIZE * RULER_FONT_VERTICAL_SPACING / PANGO_SCALE + 0.5);
+ layout = sp_ruler_get_layout (widget, "0123456789");
+ pango_layout_get_extents (layout, &ink_rect, &logical_rect);
+
+ digit_height = PANGO_PIXELS (ink_rect.height) + 2;
+ digit_offset = ink_rect.y;
if (priv->orientation == GTK_ORIENTATION_HORIZONTAL)
{
@@ -1072,19 +1087,38 @@ sp_ruler_draw_ticks (SPRuler *ruler)
if (priv->orientation == GTK_ORIENTATION_HORIZONTAL)
{
pango_layout_set_text (layout, unit_str, -1);
- cairo_move_to(cr, pos+2, 0);
+ pango_layout_get_extents (layout, &logical_rect, NULL);
+
+#if GTK_CHECK_VERSION(3,0,0)
+ cairo_move_to (cr,
+ pos + 2,
+ border.top + PANGO_PIXELS (logical_rect.y - digit_offset));
+#else
+ cairo_move_to (cr,
+ pos + 2,
+ ythickness + PANGO_PIXELS (logical_rect.y - digit_offset));
+#endif
+
pango_cairo_show_layout(cr, layout);
}
else
{
- for (gint j = 0; j < (int) strlen (unit_str); j++)
+ gint j;
+
+ for (j = 0; j < (int) strlen (unit_str); j++)
{
digit_str[0] = unit_str[j];
pango_layout_set_text (layout, digit_str, 1);
+ pango_layout_get_extents (layout, NULL, &logical_rect);
+
#if GTK_CHECK_VERSION(3,0,0)
- cairo_move_to(cr, border.left + 1, pos + digit_height * (j) + 1);
+ cairo_move_to (cr,
+ border.left + 1,
+ pos + digit_height * j + 2 + PANGO_PIXELS (logical_rect.y - digit_offset));
#else
- cairo_move_to(cr, xthickness + 1, pos + digit_height * (j) + 1);
+ cairo_move_to (cr,
+ xthickness + 1,
+ pos + digit_height * j + 2 + PANGO_PIXELS (logical_rect.y - digit_offset));
#endif
pango_cairo_show_layout (cr, layout);
}
@@ -1101,8 +1135,9 @@ out:
cairo_destroy (cr);
}
-
-void sp_ruler_set_metric(SPRuler *ruler, SPMetric metric)
+void
+sp_ruler_set_metric (SPRuler *ruler,
+ SPMetric metric)
{
g_return_if_fail(ruler != NULL);
g_return_if_fail(SP_IS_RULER (ruler));
@@ -1119,6 +1154,46 @@ void sp_ruler_set_metric(SPRuler *ruler, SPMetric metric)
gtk_widget_queue_draw (GTK_WIDGET (ruler));
}
+static PangoLayout*
+sp_ruler_create_layout (GtkWidget *widget,
+ const gchar *text)
+{
+ PangoLayout *layout;
+ PangoAttrList *attrs;
+ PangoAttribute *attr;
+
+ layout = gtk_widget_create_pango_layout (widget, text);
+
+ attrs = pango_attr_list_new ();
+
+ attr = pango_attr_scale_new (PANGO_SCALE_X_SMALL);
+ attr->start_index = 0;
+ attr->end_index = -1;
+ pango_attr_list_insert (attrs, attr);
+
+ pango_layout_set_attributes (layout, attrs);
+ pango_attr_list_unref (attrs);
+
+ return layout;
+}
+
+static PangoLayout *
+sp_ruler_get_layout (GtkWidget *widget,
+ const gchar *text)
+{
+ SPRulerPrivate *priv = SP_RULER_GET_PRIVATE (widget);
+
+ if (priv->layout)
+ {
+ pango_layout_set_text (priv->layout, text, -1);
+ return priv->layout;
+ }
+
+ priv->layout = sp_ruler_create_layout (widget, text);
+
+ return priv->layout;
+}
+
/*
Local Variables:
mode:c++
generated by cgit v1.2.3 (git 2.25.1) at 2026-05-19 23:47:26 +0000