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renderborder: Add API to query the outline clip

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And use it in implementation of gadgets.
This commit is contained in:
Benjamin Otte 2016-02-21 01:01:41 +01:00
parent 23b3774e6b
commit e4a485dca2
3 changed files with 141 additions and 22 deletions
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9
gtk/gtkcssgadget.c
View File

@ -601,6 +601,7 @@ gtk_css_gadget_allocate (GtkCssGadget *gadget,
{
GtkCssGadgetPrivate *priv = gtk_css_gadget_get_instance_private (gadget);
GtkAllocation content_allocation;
GtkAllocation tmp_clip;
GtkAllocation content_clip = { 0, 0, 0, 0 };
GtkBorder margin, border, padding, shadow, extents;
GtkCssStyle *style;
@ -669,6 +670,14 @@ gtk_css_gadget_allocate (GtkCssGadget *gadget,
if (content_clip.width > 0 && content_clip.height > 0)
gdk_rectangle_union (&content_clip, out_clip, out_clip);
if (gtk_css_style_render_outline_get_clip (style,
allocation->x + margin.left,
allocation->y + margin.top,
allocation->width - margin.left - margin.right,
allocation->height - margin.top - margin.bottom,
&tmp_clip))
gdk_rectangle_union (&tmp_clip, out_clip, out_clip);
}
/**

110
gtk/gtkrenderborder.c
View File

@ -691,6 +691,18 @@ render_border (cairo_t *cr,
cairo_restore (cr);
}
gboolean
gtk_css_style_render_has_border (GtkCssStyle *style)
{
if (_gtk_css_image_value_get_image (gtk_css_style_get_value (style, GTK_CSS_PROPERTY_BORDER_IMAGE_SOURCE)))
return TRUE;
return _gtk_css_number_value_get (gtk_css_style_get_value (style, GTK_CSS_PROPERTY_BORDER_TOP_WIDTH), 100) > 0
|| _gtk_css_number_value_get (gtk_css_style_get_value (style, GTK_CSS_PROPERTY_BORDER_RIGHT_WIDTH), 100) > 0
|| _gtk_css_number_value_get (gtk_css_style_get_value (style, GTK_CSS_PROPERTY_BORDER_BOTTOM_WIDTH), 100) > 0
|| _gtk_css_number_value_get (gtk_css_style_get_value (style, GTK_CSS_PROPERTY_BORDER_LEFT_WIDTH), 100) > 0;
}
void
gtk_css_style_render_border (GtkCssStyle *style,
cairo_t *cr,
@ -745,6 +757,70 @@ gtk_css_style_render_border (GtkCssStyle *style,
}
}
gboolean
gtk_css_style_render_border_get_clip (GtkCssStyle *style,
gdouble x,
gdouble y,
gdouble width,
gdouble height,
GdkRectangle *out_clip)
{
if (!gtk_css_style_render_has_border (style))
return FALSE;
out_clip->x = floor (x);
out_clip->y = floor (y);
out_clip->width = ceil (x + width) - out_clip->x;
out_clip->height = ceil (y + height) - out_clip->y;
return TRUE;
}
gboolean
gtk_css_style_render_has_outline (GtkCssStyle *style)
{
return _gtk_css_number_value_get (gtk_css_style_get_value (style, GTK_CSS_PROPERTY_OUTLINE_WIDTH), 100) > 0;
}
static void
compute_outline_rect (GtkCssStyle *style,
gdouble x,
gdouble y,
gdouble width,
gdouble height,
cairo_rectangle_t *out_rect)
{
double offset, owidth;
owidth = _gtk_css_number_value_get (gtk_css_style_get_value (style, GTK_CSS_PROPERTY_OUTLINE_WIDTH), 100);
offset = _gtk_css_number_value_get (gtk_css_style_get_value (style, GTK_CSS_PROPERTY_OUTLINE_OFFSET), 100);
if (width <= -2 * offset)
{
x += width / 2;
out_rect->x = x - owidth;
out_rect->width = 2 * owidth;
}
else
{
out_rect->x = x - offset - owidth;
out_rect->width = width + 2 * (offset + owidth);
}
if (height <= -2 * offset)
{
y += height / 2;
out_rect->y = y - owidth;
out_rect->height = 2 * owidth;
}
else
{
out_rect->y = y - offset - owidth;
out_rect->height = height + 2 * (offset + owidth);
}
}
void
gtk_css_style_render_outline (GtkCssStyle *style,
cairo_t *cr,
@ -761,24 +837,42 @@ gtk_css_style_render_outline (GtkCssStyle *style,
border_style[0] = _gtk_css_border_style_value_get (gtk_css_style_get_value (style, GTK_CSS_PROPERTY_OUTLINE_STYLE));
if (border_style[0] != GTK_BORDER_STYLE_NONE)
{
int offset;
cairo_rectangle_t rect;
compute_outline_rect (style, x, y, width, height, &rect);
border_style[1] = border_style[2] = border_style[3] = border_style[0];
border_width[0] = _gtk_css_number_value_get (gtk_css_style_get_value (style, GTK_CSS_PROPERTY_OUTLINE_WIDTH), 100);
border_width[3] = border_width[2] = border_width[1] = border_width[0];
colors[0] = *_gtk_css_rgba_value_get_rgba (gtk_css_style_get_value (style, GTK_CSS_PROPERTY_OUTLINE_COLOR));
colors[3] = colors[2] = colors[1] = colors[0];
offset = _gtk_css_number_value_get (gtk_css_style_get_value (style, GTK_CSS_PROPERTY_OUTLINE_OFFSET), 100);
_gtk_rounded_box_init_rect (&border_box, x, y, width, height);
_gtk_rounded_box_shrink (&border_box,
- border_width[GTK_CSS_TOP] - offset,
- border_width[GTK_CSS_RIGHT] - offset,
- border_width[GTK_CSS_LEFT] - offset,
- border_width[GTK_CSS_BOTTOM] - offset);
_gtk_rounded_box_init_rect (&border_box, rect.x, rect.y, rect.width, rect.height);
_gtk_rounded_box_apply_outline_radius_for_style (&border_box, style, GTK_JUNCTION_NONE);
render_border (cr, &border_box, border_width, 0, colors, border_style);
}
}
gboolean
gtk_css_style_render_outline_get_clip (GtkCssStyle *style,
gdouble x,
gdouble y,
gdouble width,
gdouble height,
GdkRectangle *out_clip)
{
cairo_rectangle_t rect;
if (!gtk_css_style_render_has_outline (style))
return FALSE;
compute_outline_rect (style, x, y, width, height, &rect);
out_clip->x = floor (rect.x);
out_clip->y = floor (rect.y);
out_clip->width = ceil (rect.x + rect.width) - out_clip->x;
out_clip->height = ceil (rect.y + rect.height) - out_clip->y;
return TRUE;
}

44
gtk/gtkrenderborderprivate.h
View File

@ -28,20 +28,36 @@
G_BEGIN_DECLS
void gtk_css_style_render_border (GtkCssStyle *style,
cairo_t *cr,
gdouble x,
gdouble y,
gdouble width,
gdouble height,
guint hidden_side,
GtkJunctionSides junction);
void gtk_css_style_render_outline (GtkCssStyle *style,
cairo_t *cr,
gdouble x,
gdouble y,
gdouble width,
gdouble height);
gboolean gtk_css_style_render_has_border (GtkCssStyle *style);
void gtk_css_style_render_border (GtkCssStyle *style,
cairo_t *cr,
gdouble x,
gdouble y,
gdouble width,
gdouble height,
guint hidden_side,
GtkJunctionSides junction);
gboolean gtk_css_style_render_border_get_clip (GtkCssStyle *style,
gdouble x,
gdouble y,
gdouble width,
gdouble height,
GdkRectangle *out_clip) G_GNUC_WARN_UNUSED_RESULT;
gboolean gtk_css_style_render_has_outline (GtkCssStyle *style);
void gtk_css_style_render_outline (GtkCssStyle *style,
cairo_t *cr,
gdouble x,
gdouble y,
gdouble width,
gdouble height);
gboolean gtk_css_style_render_outline_get_clip (GtkCssStyle *style,
gdouble x,
gdouble y,
gdouble width,
gdouble height,
GdkRectangle *out_clip) G_GNUC_WARN_UNUSED_RESULT;
G_END_DECLS