Commit 260b587c authored by Benjamin Otte's avatar Benjamin Otte

cssvalue: Implement transitioning arrays

Or rather: Implement it for backgrounds, as the animation rules for
arrays vary by property.
parent e3fc081c
......@@ -18,6 +18,8 @@
#include "config.h"
#include "gtkcssarrayvalueprivate.h"
#include "gtkcssimagevalueprivate.h"
#include "gtkcssstylepropertyprivate.h"
#include <string.h>
......@@ -92,13 +94,203 @@ gtk_css_value_array_equal (const GtkCssValue *value1,
return TRUE;
}
static guint
gcd (guint a, guint b)
{
while (b != 0)
{
guint t = b;
b = a % b;
a = t;
}
return a;
}
static guint
lcm (guint a, guint b)
{
return a / gcd (a, b) * b;
}
static GtkCssValue *
gtk_css_value_array_transition_repeat (GtkCssValue *start,
GtkCssValue *end,
guint property_id,
double progress)
{
GtkCssValue **transitions;
guint i, n;
n = lcm (start->n_values, end->n_values);
transitions = g_newa (GtkCssValue *, n);
for (i = 0; i < n; i++)
{
transitions[i] = _gtk_css_value_transition (start->values[i],
end->values[i],
property_id,
progress);
if (transitions[i] == NULL)
{
while (i--)
_gtk_css_value_unref (transitions[i]);
return NULL;
}
}
return _gtk_css_array_value_new_from_array (transitions, n);
}
static GtkCssValue *
gtk_css_array_value_create_default_transition_value (guint property_id)
{
switch (property_id)
{
case GTK_CSS_PROPERTY_BACKGROUND_IMAGE:
return _gtk_css_image_value_new (NULL);
default:
g_return_val_if_reached (NULL);
}
}
static GtkCssValue *
gtk_css_value_array_transition_extend (GtkCssValue *start,
GtkCssValue *end,
guint property_id,
double progress)
{
GtkCssValue **transitions;
guint i, n;
n = MAX (start->n_values, end->n_values);
transitions = g_newa (GtkCssValue *, n);
for (i = 0; i < MIN (start->n_values, end->n_values); i++)
{
transitions[i] = _gtk_css_value_transition (start->values[i],
end->values[i],
property_id,
progress);
if (transitions[i] == NULL)
{
while (i--)
_gtk_css_value_unref (transitions[i]);
return NULL;
}
}
if (start->n_values != end->n_values)
{
GtkCssValue *default_value;
default_value = gtk_css_array_value_create_default_transition_value (property_id);
for (; i < start->n_values; i++)
{
transitions[i] = _gtk_css_value_transition (start->values[i],
default_value,
property_id,
progress);
if (transitions[i] == NULL)
{
while (i--)
_gtk_css_value_unref (transitions[i]);
return NULL;
}
}
for (; i < end->n_values; i++)
{
transitions[i] = _gtk_css_value_transition (default_value,
end->values[i],
property_id,
progress);
if (transitions[i] == NULL)
{
while (i--)
_gtk_css_value_unref (transitions[i]);
return NULL;
}
}
}
g_assert (i == n);
return _gtk_css_array_value_new_from_array (transitions, n);
}
static GtkCssValue *
gtk_css_value_array_transition (GtkCssValue *start,
GtkCssValue *end,
guint property_id,
double progress)
{
return NULL;
switch (property_id)
{
case GTK_CSS_PROPERTY_BACKGROUND_CLIP:
case GTK_CSS_PROPERTY_BACKGROUND_ORIGIN:
case GTK_CSS_PROPERTY_BACKGROUND_SIZE:
case GTK_CSS_PROPERTY_BACKGROUND_POSITION:
case GTK_CSS_PROPERTY_BACKGROUND_REPEAT:
return gtk_css_value_array_transition_repeat (start, end, property_id, progress);
case GTK_CSS_PROPERTY_BACKGROUND_IMAGE:
return gtk_css_value_array_transition_extend (start, end, property_id, progress);
case GTK_CSS_PROPERTY_COLOR:
case GTK_CSS_PROPERTY_FONT_SIZE:
case GTK_CSS_PROPERTY_BACKGROUND_COLOR:
case GTK_CSS_PROPERTY_FONT_FAMILY:
case GTK_CSS_PROPERTY_FONT_STYLE:
case GTK_CSS_PROPERTY_FONT_VARIANT:
case GTK_CSS_PROPERTY_FONT_WEIGHT:
case GTK_CSS_PROPERTY_TEXT_SHADOW:
case GTK_CSS_PROPERTY_ICON_SHADOW:
case GTK_CSS_PROPERTY_BOX_SHADOW:
case GTK_CSS_PROPERTY_MARGIN_TOP:
case GTK_CSS_PROPERTY_MARGIN_LEFT:
case GTK_CSS_PROPERTY_MARGIN_BOTTOM:
case GTK_CSS_PROPERTY_MARGIN_RIGHT:
case GTK_CSS_PROPERTY_PADDING_TOP:
case GTK_CSS_PROPERTY_PADDING_LEFT:
case GTK_CSS_PROPERTY_PADDING_BOTTOM:
case GTK_CSS_PROPERTY_PADDING_RIGHT:
case GTK_CSS_PROPERTY_BORDER_TOP_STYLE:
case GTK_CSS_PROPERTY_BORDER_TOP_WIDTH:
case GTK_CSS_PROPERTY_BORDER_LEFT_STYLE:
case GTK_CSS_PROPERTY_BORDER_LEFT_WIDTH:
case GTK_CSS_PROPERTY_BORDER_BOTTOM_STYLE:
case GTK_CSS_PROPERTY_BORDER_BOTTOM_WIDTH:
case GTK_CSS_PROPERTY_BORDER_RIGHT_STYLE:
case GTK_CSS_PROPERTY_BORDER_RIGHT_WIDTH:
case GTK_CSS_PROPERTY_BORDER_TOP_LEFT_RADIUS:
case GTK_CSS_PROPERTY_BORDER_TOP_RIGHT_RADIUS:
case GTK_CSS_PROPERTY_BORDER_BOTTOM_RIGHT_RADIUS:
case GTK_CSS_PROPERTY_BORDER_BOTTOM_LEFT_RADIUS:
case GTK_CSS_PROPERTY_OUTLINE_STYLE:
case GTK_CSS_PROPERTY_OUTLINE_WIDTH:
case GTK_CSS_PROPERTY_OUTLINE_OFFSET:
case GTK_CSS_PROPERTY_BORDER_TOP_COLOR:
case GTK_CSS_PROPERTY_BORDER_RIGHT_COLOR:
case GTK_CSS_PROPERTY_BORDER_BOTTOM_COLOR:
case GTK_CSS_PROPERTY_BORDER_LEFT_COLOR:
case GTK_CSS_PROPERTY_OUTLINE_COLOR:
case GTK_CSS_PROPERTY_BORDER_IMAGE_SOURCE:
case GTK_CSS_PROPERTY_BORDER_IMAGE_REPEAT:
case GTK_CSS_PROPERTY_BORDER_IMAGE_SLICE:
case GTK_CSS_PROPERTY_BORDER_IMAGE_WIDTH:
case GTK_CSS_PROPERTY_ENGINE:
default:
/* keep all values that are not arrays here, so we get a warning if we ever turn them
* into arrays and start animating them. */
g_warning ("Don't know how to transition arrays for property '%s'",
_gtk_style_property_get_name (GTK_STYLE_PROPERTY (_gtk_css_style_property_lookup_by_id (property_id))));
case GTK_CSS_PROPERTY_TRANSITION_PROPERTY:
case GTK_CSS_PROPERTY_TRANSITION_DURATION:
case GTK_CSS_PROPERTY_TRANSITION_TIMING_FUNCTION:
case GTK_CSS_PROPERTY_TRANSITION_DELAY:
case GTK_CSS_PROPERTY_GTK_KEY_BINDINGS:
return NULL;
}
}
static void
......
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