359 lines
9.6 KiB
C
359 lines
9.6 KiB
C
/* tidy-texture-frame.h: Expandible texture actor
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*
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* Copyright (C) 2007 OpenedHand
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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/**
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* SECTION:tidy-texture-frame
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* @short_description: Stretch a texture to fit the entire allocation
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*
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* #TidyTextureFrame
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*
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*/
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#include <cogl/cogl.h>
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#include "tidy-texture-frame.h"
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#define TIDY_PARAM_READABLE \
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(G_PARAM_READABLE | \
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G_PARAM_STATIC_NICK | G_PARAM_STATIC_NAME | G_PARAM_STATIC_BLURB)
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#define TIDY_PARAM_READWRITE \
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(G_PARAM_READABLE | G_PARAM_WRITABLE | \
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G_PARAM_STATIC_NICK | G_PARAM_STATIC_NAME | G_PARAM_STATIC_BLURB)
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enum
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{
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PROP_0,
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PROP_LEFT,
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PROP_TOP,
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PROP_RIGHT,
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PROP_BOTTOM
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};
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G_DEFINE_TYPE (TidyTextureFrame,
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tidy_texture_frame,
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CLUTTER_TYPE_CLONE_TEXTURE);
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#define TIDY_TEXTURE_FRAME_GET_PRIVATE(obj) \
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(G_TYPE_INSTANCE_GET_PRIVATE ((obj), TIDY_TYPE_TEXTURE_FRAME, TidyTextureFramePrivate))
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struct _TidyTextureFramePrivate
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{
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gint left, top, right, bottom;
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};
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static void
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tidy_texture_frame_paint (ClutterActor *self)
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{
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TidyTextureFramePrivate *priv = TIDY_TEXTURE_FRAME (self)->priv;
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ClutterCloneTexture *clone_texture = CLUTTER_CLONE_TEXTURE (self);
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ClutterTexture *parent_texture;
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guint width, height;
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guint tex_width, tex_height;
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guint ex, ey;
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ClutterFixed tx1, ty1, tx2, ty2;
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ClutterColor col = { 0xff, 0xff, 0xff, 0xff };
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CoglHandle cogl_texture;
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priv = TIDY_TEXTURE_FRAME (self)->priv;
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/* no need to paint stuff if we don't have a texture */
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parent_texture = clutter_clone_texture_get_parent_texture (clone_texture);
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if (!parent_texture)
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return;
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/* parent texture may have been hidden, so need to make sure it gets
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* realized
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*/
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if (!CLUTTER_ACTOR_IS_REALIZED (parent_texture))
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clutter_actor_realize (CLUTTER_ACTOR (parent_texture));
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cogl_texture = clutter_texture_get_cogl_texture (parent_texture);
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if (cogl_texture == COGL_INVALID_HANDLE)
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return;
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cogl_push_matrix ();
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tex_width = cogl_texture_get_width (cogl_texture);
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tex_height = cogl_texture_get_height (cogl_texture);
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clutter_actor_get_size (self, &width, &height);
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tx1 = CLUTTER_INT_TO_FIXED (priv->left) / tex_width;
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tx2 = CLUTTER_INT_TO_FIXED (tex_width - priv->right) / tex_width;
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ty1 = CLUTTER_INT_TO_FIXED (priv->top) / tex_height;
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ty2 = CLUTTER_INT_TO_FIXED (tex_height - priv->bottom) / tex_height;
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col.alpha = clutter_actor_get_paint_opacity (self);
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cogl_color (&col);
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ex = width - priv->right;
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if (ex < 0)
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ex = priv->right; /* FIXME ? */
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ey = height - priv->bottom;
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if (ey < 0)
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ey = priv->bottom; /* FIXME ? */
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#define FX(x) CLUTTER_INT_TO_FIXED(x)
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/* top left corner */
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cogl_texture_rectangle (cogl_texture,
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0,
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0,
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FX(priv->left), /* FIXME: clip if smaller */
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FX(priv->top),
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0,
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0,
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tx1,
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ty1);
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/* top middle */
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cogl_texture_rectangle (cogl_texture,
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FX(priv->left),
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FX(priv->top),
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FX(ex),
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0,
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tx1,
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0,
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tx2,
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ty1);
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/* top right */
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cogl_texture_rectangle (cogl_texture,
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FX(ex),
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0,
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FX(width),
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FX(priv->top),
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tx2,
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0,
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CFX_ONE,
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ty1);
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/* mid left */
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cogl_texture_rectangle (cogl_texture,
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0,
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FX(priv->top),
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FX(priv->left),
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FX(ey),
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0,
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ty1,
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tx1,
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ty2);
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/* center */
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cogl_texture_rectangle (cogl_texture,
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FX(priv->left),
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FX(priv->top),
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FX(ex),
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FX(ey),
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tx1,
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ty1,
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tx2,
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ty2);
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/* mid right */
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cogl_texture_rectangle (cogl_texture,
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FX(ex),
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FX(priv->top),
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FX(width),
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FX(ey),
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tx2,
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ty1,
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CFX_ONE,
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ty2);
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/* bottom left */
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cogl_texture_rectangle (cogl_texture,
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0,
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FX(ey),
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FX(priv->left),
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FX(height),
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0,
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ty2,
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tx1,
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CFX_ONE);
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/* bottom center */
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cogl_texture_rectangle (cogl_texture,
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FX(priv->left),
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FX(ey),
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FX(ex),
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FX(height),
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tx1,
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ty2,
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tx2,
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CFX_ONE);
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/* bottom right */
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cogl_texture_rectangle (cogl_texture,
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FX(ex),
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FX(ey),
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FX(width),
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FX(height),
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tx2,
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ty2,
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CFX_ONE,
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CFX_ONE);
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cogl_pop_matrix ();
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}
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static void
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tidy_texture_frame_set_property (GObject *object,
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guint prop_id,
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const GValue *value,
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GParamSpec *pspec)
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{
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TidyTextureFrame *ctexture = TIDY_TEXTURE_FRAME (object);
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TidyTextureFramePrivate *priv = ctexture->priv;
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switch (prop_id)
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{
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case PROP_LEFT:
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priv->left = g_value_get_int (value);
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break;
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case PROP_TOP:
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priv->top = g_value_get_int (value);
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break;
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case PROP_RIGHT:
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priv->right = g_value_get_int (value);
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break;
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case PROP_BOTTOM:
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priv->bottom = g_value_get_int (value);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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static void
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tidy_texture_frame_get_property (GObject *object,
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guint prop_id,
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GValue *value,
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GParamSpec *pspec)
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{
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TidyTextureFrame *ctexture = TIDY_TEXTURE_FRAME (object);
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TidyTextureFramePrivate *priv = ctexture->priv;
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switch (prop_id)
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{
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case PROP_LEFT:
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g_value_set_int (value, priv->left);
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break;
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case PROP_TOP:
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g_value_set_int (value, priv->top);
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break;
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case PROP_RIGHT:
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g_value_set_int (value, priv->right);
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break;
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case PROP_BOTTOM:
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g_value_set_int (value, priv->bottom);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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static void
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tidy_texture_frame_class_init (TidyTextureFrameClass *klass)
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{
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GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
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ClutterActorClass *actor_class = CLUTTER_ACTOR_CLASS (klass);
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actor_class->paint = tidy_texture_frame_paint;
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gobject_class->set_property = tidy_texture_frame_set_property;
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gobject_class->get_property = tidy_texture_frame_get_property;
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g_object_class_install_property
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(gobject_class,
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PROP_LEFT,
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g_param_spec_int ("left",
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"left",
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"",
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0, G_MAXINT,
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0,
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TIDY_PARAM_READWRITE));
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g_object_class_install_property
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(gobject_class,
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PROP_TOP,
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g_param_spec_int ("top",
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"top",
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"",
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0, G_MAXINT,
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0,
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TIDY_PARAM_READWRITE));
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g_object_class_install_property
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(gobject_class,
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PROP_BOTTOM,
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g_param_spec_int ("bottom",
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"bottom",
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"",
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0, G_MAXINT,
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0,
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TIDY_PARAM_READWRITE));
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g_object_class_install_property
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(gobject_class,
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PROP_RIGHT,
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g_param_spec_int ("right",
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"right",
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"",
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0, G_MAXINT,
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0,
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TIDY_PARAM_READWRITE));
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g_type_class_add_private (gobject_class, sizeof (TidyTextureFramePrivate));
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}
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static void
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tidy_texture_frame_init (TidyTextureFrame *self)
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{
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TidyTextureFramePrivate *priv;
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self->priv = priv = TIDY_TEXTURE_FRAME_GET_PRIVATE (self);
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}
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ClutterActor *
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tidy_texture_frame_new (ClutterTexture *texture,
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gint left,
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gint top,
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gint right,
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gint bottom)
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{
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g_return_val_if_fail (texture == NULL || CLUTTER_IS_TEXTURE (texture), NULL);
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return g_object_new (TIDY_TYPE_TEXTURE_FRAME,
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"parent-texture", texture,
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"left", left,
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"top", top,
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"right", right,
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"bottom", bottom,
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NULL);
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}
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