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API: ruler: Change draw_pos vfunc to take a cr, width and height

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Also refactor code to use it
This commit is contained in:
Benjamin Otte 2010-09-02 18:02:48 +02:00
parent f5a10b05b5
commit ee8788f766
2 changed files with 55 additions and 81 deletions
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133
gtk/gtkruler.c
View File

@ -91,7 +91,8 @@ static void gtk_ruler_make_pixmap (GtkRuler *ruler);
static void gtk_ruler_draw_ticks (GtkRuler *ruler);
static void gtk_ruler_real_draw_ticks (GtkRuler *ruler,
cairo_t *cr);
static void gtk_ruler_real_draw_pos (GtkRuler *ruler);
static void gtk_ruler_real_draw_pos (GtkRuler *ruler,
cairo_t *cr);
static const GtkRulerMetric ruler_metrics[] =
@ -473,16 +474,6 @@ gtk_ruler_draw_ticks (GtkRuler *ruler)
cairo_destroy (cr);
}
static void
gtk_ruler_draw_pos (GtkRuler *ruler)
{
g_return_if_fail (GTK_IS_RULER (ruler));
if (GTK_RULER_GET_CLASS (ruler)->draw_pos)
GTK_RULER_GET_CLASS (ruler)->draw_pos (ruler);
}
static void
gtk_ruler_realize (GtkWidget *widget)
{
@ -627,9 +618,12 @@ gtk_ruler_expose (GtkWidget *widget,
cairo_set_source_surface (cr, priv->backing_store, 0, 0);
gdk_cairo_region (cr, event->region);
cairo_fill (cr);
cairo_destroy (cr);
gtk_ruler_draw_pos (ruler);
if (GTK_RULER_GET_CLASS (ruler)->draw_pos)
GTK_RULER_GET_CLASS (ruler)->draw_pos (ruler,
cr);
cairo_destroy (cr);
}
return FALSE;
@ -875,97 +869,76 @@ out:
}
static void
gtk_ruler_real_draw_pos (GtkRuler *ruler)
gtk_ruler_real_draw_pos (GtkRuler *ruler,
cairo_t *cr)
{
GtkAllocation allocation;
GtkWidget *widget = GTK_WIDGET (ruler);
GtkRulerPrivate *priv = ruler->priv;
GtkStyle *style;
gint x, y;
gint width, height;
gint x, y, width, height;
gint bs_width, bs_height;
gint xthickness;
gint ythickness;
gdouble increment;
if (gtk_widget_is_drawable (widget))
style = gtk_widget_get_style (widget);
xthickness = style->xthickness;
ythickness = style->ythickness;
width = gtk_widget_get_allocated_width (widget);
height = gtk_widget_get_allocated_height (widget);
if (priv->orientation == GTK_ORIENTATION_HORIZONTAL)
{
style = gtk_widget_get_style (widget);
gtk_widget_get_allocation (widget, &allocation);
height -= ythickness * 2;
xthickness = style->xthickness;
ythickness = style->ythickness;
width = allocation.width;
height = allocation.height;
bs_width = height / 2 + 2;
bs_width |= 1; /* make sure it's odd */
bs_height = bs_width / 2 + 1;
}
else
{
width -= xthickness * 2;
bs_height = width / 2 + 2;
bs_height |= 1; /* make sure it's odd */
bs_width = bs_height / 2 + 1;
}
if ((bs_width > 0) && (bs_height > 0))
{
if (priv->orientation == GTK_ORIENTATION_HORIZONTAL)
{
height -= ythickness * 2;
increment = (gdouble) width / (priv->upper - priv->lower);
bs_width = height / 2 + 2;
bs_width |= 1; /* make sure it's odd */
bs_height = bs_width / 2 + 1;
x = ROUND ((priv->position - priv->lower) * increment) + (xthickness - bs_width) / 2 - 1;
y = (height + bs_height) / 2 + ythickness;
}
else
{
width -= xthickness * 2;
increment = (gdouble) height / (priv->upper - priv->lower);
bs_height = width / 2 + 2;
bs_height |= 1; /* make sure it's odd */
bs_width = bs_height / 2 + 1;
x = (width + bs_width) / 2 + xthickness;
y = ROUND ((priv->position - priv->lower) * increment) + (ythickness - bs_height) / 2 - 1;
}
if ((bs_width > 0) && (bs_height > 0))
{
GdkWindow *window;
gdk_cairo_set_source_color (cr, &style->fg[gtk_widget_get_state (widget)]);
window = gtk_widget_get_window (widget);
cairo_move_to (cr, x, y);
cairo_t *cr = gdk_cairo_create (window);
if (priv->orientation == GTK_ORIENTATION_HORIZONTAL)
{
cairo_line_to (cr, x + bs_width / 2.0, y + bs_height);
cairo_line_to (cr, x + bs_width, y);
}
else
{
cairo_line_to (cr, x + bs_width, y + bs_height / 2.0);
cairo_line_to (cr, x, y + bs_height);
}
/* If a backing store exists, restore the ruler */
if (priv->backing_store) {
cairo_set_source_surface (cr, priv->backing_store, 0, 0);
cairo_rectangle (cr, priv->xsrc, priv->ysrc, bs_width, bs_height);
cairo_fill (cr);
}
cairo_fill (cr);
if (priv->orientation == GTK_ORIENTATION_HORIZONTAL)
{
increment = (gdouble) width / (priv->upper - priv->lower);
x = ROUND ((priv->position - priv->lower) * increment) + (xthickness - bs_width) / 2 - 1;
y = (height + bs_height) / 2 + ythickness;
}
else
{
increment = (gdouble) height / (priv->upper - priv->lower);
x = (width + bs_width) / 2 + xthickness;
y = ROUND ((priv->position - priv->lower) * increment) + (ythickness - bs_height) / 2 - 1;
}
gdk_cairo_set_source_color (cr, &style->fg[gtk_widget_get_state (widget)]);
cairo_move_to (cr, x, y);
if (priv->orientation == GTK_ORIENTATION_HORIZONTAL)
{
cairo_line_to (cr, x + bs_width / 2.0, y + bs_height);
cairo_line_to (cr, x + bs_width, y);
}
else
{
cairo_line_to (cr, x + bs_width, y + bs_height / 2.0);
cairo_line_to (cr, x, y + bs_height);
}
cairo_fill (cr);
cairo_destroy (cr);
priv->xsrc = x;
priv->ysrc = y;
}
priv->xsrc = x;
priv->ysrc = y;
}
}

3
gtk/gtkruler.h
View File

@ -77,7 +77,8 @@ struct _GtkRulerClass
void (* draw_ticks) (GtkRuler *ruler,
cairo_t *cr);
void (* draw_pos) (GtkRuler *ruler);
void (* draw_pos) (GtkRuler *ruler,
cairo_t *cr);
/* Padding for future expansion */
void (*_gtk_reserved1) (void);