void
_st_paint_shadow_with_opacity (StShadow *shadow_spec,
CoglHandle shadow_material,
ClutterActorBox *box,
guint8 paint_opacity)
{
ClutterActorBox shadow_box;
CoglColor color;
g_return_if_fail (shadow_spec != NULL);
g_return_if_fail (shadow_material != COGL_INVALID_HANDLE);
st_shadow_get_box (shadow_spec, box, &shadow_box);
cogl_color_set_from_4ub (&color,
shadow_spec->color.red * paint_opacity / 255,
shadow_spec->color.green * paint_opacity / 255,
shadow_spec->color.blue * paint_opacity / 255,
shadow_spec->color.alpha * paint_opacity / 255);
cogl_color_premultiply (&color);
cogl_material_set_layer_combine_constant (shadow_material, 0, &color);
cogl_set_source (shadow_material);
cogl_rectangle_with_texture_coords (shadow_box.x1, shadow_box.y1,
shadow_box.x2, shadow_box.y2,
0, 0, 1, 1);
}
CoglHandle
_st_create_shadow_material_from_actor (StShadow *shadow_spec,
ClutterActor *actor)
{
CoglHandle shadow_material = COGL_INVALID_HANDLE;
if (CLUTTER_IS_TEXTURE (actor))
{
CoglHandle texture;
texture = clutter_texture_get_cogl_texture (CLUTTER_TEXTURE (actor));
shadow_material = _st_create_shadow_material (shadow_spec, texture);
}
else
{
CoglHandle buffer, offscreen;
ClutterActorBox box;
CoglColor clear_color;
float width, height;
clutter_actor_get_allocation_box (actor, &box);
clutter_actor_box_get_size (&box, &width, &height);
if (width == 0 || height == 0)
return COGL_INVALID_HANDLE;
buffer = st_cogl_texture_new_with_size_wrapper (width, height,
COGL_TEXTURE_NO_SLICING,
COGL_PIXEL_FORMAT_ANY);
if (buffer == COGL_INVALID_HANDLE)
return COGL_INVALID_HANDLE;
offscreen = cogl_offscreen_new_to_texture (buffer);
if (offscreen == COGL_INVALID_HANDLE)
{
cogl_handle_unref (buffer);
return COGL_INVALID_HANDLE;
}
cogl_color_set_from_4ub (&clear_color, 0, 0, 0, 0);
cogl_push_framebuffer (offscreen);
cogl_clear (&clear_color, COGL_BUFFER_BIT_COLOR);
cogl_translate (-box.x1, -box.y1, 0);
cogl_ortho (0, width, height, 0, 0, 1.0);
clutter_actor_paint (actor);
cogl_pop_framebuffer ();
cogl_handle_unref (offscreen);
shadow_material = _st_create_shadow_material (shadow_spec, buffer);
cogl_handle_unref (buffer);
}
return shadow_material;
}
void
cogl_set_source_color4ub (guint8 red,
guint8 green,
guint8 blue,
guint8 alpha)
{
CoglColor c = { 0, };
cogl_color_set_from_4ub (&c, red, green, blue, alpha);
cogl_set_source_color (&c);
}
static void
update_fps (ClutterActor *stage,
GTimer *timer)
{
static PangoLayout *layout = NULL;
static guint counter = 0;
static CoglColor white;
gdouble resolution;
gchar *text;
if (!layout)
{
PangoFontDescription *pango_font_desc;
CoglPangoFontMap *pango_font_map;
PangoContext *pango_context;
cogl_color_set_from_4ub (&white, 0xff, 0xff, 0xff, 0xff);
pango_font_map = COGL_PANGO_FONT_MAP (cogl_pango_font_map_new());
resolution = clutter_backend_get_resolution (clutter_get_default_backend ());
cogl_pango_font_map_set_resolution (pango_font_map, resolution);
cogl_pango_font_map_set_use_mipmapping (pango_font_map, TRUE);
pango_context = cogl_pango_font_map_create_context (pango_font_map);
pango_font_desc = pango_font_description_new ();
pango_font_description_set_family (pango_font_desc, "Sans");
pango_font_description_set_size (pango_font_desc, 30 * PANGO_SCALE);
layout = pango_layout_new (pango_context);
pango_layout_set_font_description (layout, pango_font_desc);
pango_font_description_free (pango_font_desc);
g_object_unref (pango_context);
}
if (g_timer_elapsed (timer, NULL) > 0.5)
{
text = g_strdup_printf ("%dfps", counter * 2);
pango_layout_set_text (layout, text, -1);
g_free (text);
g_timer_start (timer);
counter = 0;
}
else
counter++;
cogl_pango_render_layout (layout, 0, 0, &white, 0);
}
static void
color_prop_value_cb (MxSlider *slider,
GParamSpec *pspec,
ColorPropComp *prop_comp)
{
float value = mx_slider_get_value (slider) * 255.0f + 0.5f;
ColorProp *prop = prop_comp->prop;
if (prop->object)
{
ClutterColor *color;
g_object_get (prop->object, prop->prop_name, &color, NULL);
((guint8 *) color)[prop_comp->comp_num] = value;
clutter_rectangle_set_color (CLUTTER_RECTANGLE (prop->rect), color);
g_object_set (prop->object, prop->prop_name, color, NULL);
clutter_color_free (color);
}
else
{
ClutterColor color;
CoglColor cogl_color;
prop->get_func (prop->material, &cogl_color);
color.red = cogl_color_get_red_byte (&cogl_color);
color.green = cogl_color_get_green_byte (&cogl_color);
color.blue = cogl_color_get_blue_byte (&cogl_color);
color.alpha = 255;
((guint8 *) &color)[prop_comp->comp_num] = value;
cogl_color_set_from_4ub (&cogl_color,
color.red,
color.green,
color.blue,
255);
clutter_rectangle_set_color (CLUTTER_RECTANGLE (prop->rect), &color);
prop->set_func (prop->material, &cogl_color);
}
update_prop_comp_label (prop_comp, value);
}
static CoglHandle
data_to_cogl_handle (const guchar *data,
gboolean has_alpha,
int width,
int height,
int rowstride,
gboolean add_padding)
{
CoglHandle texture, offscreen;
CoglColor clear_color;
guint size;
size = MAX (width, height);
if (!add_padding || width == height)
return cogl_texture_new_from_data (width,
height,
COGL_TEXTURE_NONE,
has_alpha ? COGL_PIXEL_FORMAT_RGBA_8888 : COGL_PIXEL_FORMAT_RGB_888,
COGL_PIXEL_FORMAT_ANY,
rowstride,
data);
texture = cogl_texture_new_with_size (size, size,
COGL_TEXTURE_NO_SLICING,
COGL_PIXEL_FORMAT_ANY);
offscreen = cogl_offscreen_new_to_texture (texture);
cogl_color_set_from_4ub (&clear_color, 0, 0, 0, 0);
cogl_push_framebuffer (offscreen);
cogl_clear (&clear_color, COGL_BUFFER_BIT_COLOR);
cogl_pop_framebuffer ();
cogl_handle_unref (offscreen);
cogl_texture_set_region (texture,
0, 0,
(size - width) / 2, (size - height) / 2,
width, height,
width, height,
has_alpha ? COGL_PIXEL_FORMAT_RGBA_8888 : COGL_PIXEL_FORMAT_RGB_888,
rowstride,
data);
return texture;
}
static CoglHandle
pixbuf_to_cogl_handle (GdkPixbuf *pixbuf,
gboolean add_padding)
{
CoglHandle texture, offscreen;
CoglColor clear_color;
int width, height;
guint size;
width = gdk_pixbuf_get_width (pixbuf);
height = gdk_pixbuf_get_height (pixbuf);
size = MAX (width, height);
if (!add_padding || width == height)
return cogl_texture_new_from_data (width,
height,
COGL_TEXTURE_NONE,
gdk_pixbuf_get_has_alpha (pixbuf) ? COGL_PIXEL_FORMAT_RGBA_8888 : COGL_PIXEL_FORMAT_RGB_888,
COGL_PIXEL_FORMAT_ANY,
gdk_pixbuf_get_rowstride (pixbuf),
gdk_pixbuf_get_pixels (pixbuf));
texture = cogl_texture_new_with_size (size, size,
COGL_TEXTURE_NO_SLICING,
COGL_PIXEL_FORMAT_ANY);
offscreen = cogl_offscreen_new_to_texture (texture);
cogl_color_set_from_4ub (&clear_color, 0, 0, 0, 0);
cogl_push_framebuffer (offscreen);
cogl_clear (&clear_color, COGL_BUFFER_BIT_COLOR);
cogl_pop_framebuffer ();
cogl_handle_unref (offscreen);
cogl_texture_set_region (texture,
0, 0,
(size - width) / 2, (size - height) / 2,
width, height,
width, height,
gdk_pixbuf_get_has_alpha (pixbuf) ? COGL_PIXEL_FORMAT_RGBA_8888 : COGL_PIXEL_FORMAT_RGB_888,
gdk_pixbuf_get_rowstride (pixbuf),
gdk_pixbuf_get_pixels (pixbuf));
return texture;
}
void
_display_loop (void)
{
context_switch_allegro ();
ALLEGRO_BITMAP *bmp;
bmp = al_create_bitmap (640, 480);
int blah;
for (blah=0; blah < 64; ++blah)
{
struct fbstate_data fbd;
context_switch_cogl ();
fbd = fbstate_get_data ();
context_switch_allegro ();
ALLEGRO_LOCKED_REGION *rgn;
rgn = al_lock_bitmap (bmp, ALLEGRO_PIXEL_FORMAT_BGR_888, ALLEGRO_LOCK_READWRITE);
int cnt;
char *data;
for (cnt=0,data=rgn->data; cnt < 480; ++cnt,data+=rgn->pitch)
{
memcpy (data, &fbd.data[cnt*640*3], 640*3);
}
al_unlock_bitmap (bmp);
context_switch_cogl ();
CoglColor clear_color;
cogl_color_set_from_4ub (&clear_color, '0', '0', '0', 255);
cogl_clear (&clear_color, COGL_BUFFER_BIT_COLOR);
_example_draw_at (blah, blah);
context_switch_allegro ();
al_set_target_backbuffer (fbd.display);
al_draw_bitmap (bmp, 0, 0, 0);
al_flip_display ();
al_rest (0.1f);
}
al_rest (2.0f);
}
static void
aisleriot_slot_renderer_set_material_for_card (AisleriotSlotRenderer *srend,
CoglHandle tex,
gboolean show_highlight)
{
AisleriotSlotRendererPrivate *priv = srend->priv;
guint8 opacity = clutter_actor_get_paint_opacity (CLUTTER_ACTOR (srend));
if (priv->material == COGL_INVALID_HANDLE)
priv->material = cogl_material_new ();
if (show_highlight)
{
CoglColor color;
/* The previous code for drawing the highlight rendered the
normal card texture and then rendered the card again
multiplied by the highlight color but with 50%
transparency. The blend function is alpha*src+(1-alpha*dst)
where src is effectively the tex times the highlight color
and the dst is the original tex. Therefore the final color is
0.5*tex+0.5*tex*highlight which is the same as
(0.5+highlight/2)*tex. We can precompute that value to avoid
having to draw the card twice */
cogl_color_set_from_4ub (&color,
MIN (priv->highlight_color.red
/ 2 + 128, 0xff),
MIN (priv->highlight_color.green
/ 2 + 128, 0xff),
MIN (priv->highlight_color.blue
/ 2 + 128, 0xff),
opacity);
cogl_color_premultiply (&color);
cogl_material_set_color (priv->material, &color);
}
else
cogl_material_set_color4ub (priv->material,
opacity, opacity, opacity, opacity);
cogl_material_set_layer (priv->material, 0, tex);
cogl_set_source (priv->material);
}
/**
* meta_create_color_texture_4ub:
* @red:
* @green:
* @blue:
* @alpha:
* @flags: Optional flags for the texture, or %COGL_TEXTURE_NONE;
* %COGL_TEXTURE_NO_SLICING is useful if the texture will be
* repeated to create a constant color fill, since hardware
* repeat can't be used for a sliced texture.
*
* Creates a texture that is a single pixel with the specified
* unpremultiplied color components.
*
* Return value: (transfer full): a newly created Cogl texture
*/
CoglHandle
meta_create_color_texture_4ub (guint8 red,
guint8 green,
guint8 blue,
guint8 alpha,
CoglTextureFlags flags)
{
CoglColor color;
guint8 pixel[4];
cogl_color_set_from_4ub (&color, red, green, blue, alpha);
cogl_color_premultiply (&color);
pixel[0] = cogl_color_get_red_byte (&color);
pixel[1] = cogl_color_get_green_byte (&color);
pixel[2] = cogl_color_get_blue_byte (&color);
pixel[3] = cogl_color_get_alpha_byte (&color);
return cogl_texture_new_from_data (1, 1,
flags,
COGL_PIXEL_FORMAT_RGBA_8888_PRE,
COGL_PIXEL_FORMAT_ANY,
4, pixel);
}
static void
mx_deform_bow_tie_deform (MxDeformTexture *texture,
CoglTextureVertex *vertex,
gfloat width,
gfloat height)
{
gfloat cx, cy, rx, ry, turn_angle, height_radius;
guint shade;
MxDeformBowTiePrivate *priv = ((MxDeformBowTie *)texture)->priv;
cx = priv->period * (width + width/2);
cy = height/2;
rx = ((vertex->x - cx) * cos (0)) -
((vertex->y - cy) * sin (0));
ry = ((vertex->x - cx) * sin (0)) +
((vertex->y - cy) * cos (0));
/* Make angle as a function of distance from the curl ray */
turn_angle = MAX (-G_PI, MIN (0, (rx / (width/4)) * G_PI_2));
/* Add a gradient that makes it look like lighting */
shade = (cos (turn_angle * 2) * 96) + 159;
cogl_color_set_from_4ub (&vertex->color, shade, shade, shade, 0xff);
/* Calculate the point on a cone (note, a cone, not a right cone) */
height_radius = ry;
/*ClutterFixed height_radius =
clutter_qmulx (clutter_qdivx (ry, height/2), height/2);*/
ry = height_radius * cos (turn_angle);
vertex->x = (rx * cos (0)) - (ry * sin (0)) + cx;
vertex->y = (rx * sin (0)) + (ry * cos (0)) + cy;
vertex->z = height_radius * sin (turn_angle);
}
int
main (int argc, char **argv)
{
CoglContext *ctx;
CoglOnscreen *onscreen;
CoglFramebuffer *fb;
GError *error = NULL;
Data data;
PangoRectangle hello_label_size;
float fovy, aspect, z_near, z_2d, z_far;
CoglDepthState depth_state;
CoglBool has_swap_notify;
ctx = cogl_context_new (NULL, &error);
if (!ctx) {
fprintf (stderr, "Failed to create context: %s\n", error->message);
return 1;
}
onscreen = cogl_onscreen_new (ctx, 640, 480);
fb = COGL_FRAMEBUFFER (onscreen);
data.fb = fb;
data.framebuffer_width = cogl_framebuffer_get_width (fb);
data.framebuffer_height = cogl_framebuffer_get_height (fb);
data.timer = g_timer_new ();
cogl_onscreen_show (onscreen);
cogl_framebuffer_set_viewport (fb,
0, 0,
data.framebuffer_width,
data.framebuffer_height);
fovy = 60; /* y-axis field of view */
aspect = (float)data.framebuffer_width/(float)data.framebuffer_height;
z_near = 0.1; /* distance to near clipping plane */
z_2d = 1000; /* position to 2d plane */
z_far = 2000; /* distance to far clipping plane */
cogl_framebuffer_perspective (fb, fovy, aspect, z_near, z_far);
/* Since the pango renderer emits geometry in pixel/device coordinates
* and the anti aliasing is implemented with the assumption that the
* geometry *really* does end up pixel aligned, we setup a modelview
* matrix so that for geometry in the plane z = 0 we exactly map x
* coordinates in the range [0,stage_width] and y coordinates in the
* range [0,stage_height] to the framebuffer extents with (0,0) being
* the top left.
*
* This is roughly what Clutter does for a ClutterStage, but this
* demonstrates how it is done manually using Cogl.
*/
cogl_matrix_init_identity (&data.view);
cogl_matrix_view_2d_in_perspective (&data.view, fovy, aspect, z_near, z_2d,
data.framebuffer_width,
data.framebuffer_height);
cogl_framebuffer_set_modelview_matrix (fb, &data.view);
/* Initialize some convenient constants */
cogl_matrix_init_identity (&identity);
cogl_color_set_from_4ub (&white, 0xff, 0xff, 0xff, 0xff);
/* rectangle indices allow the GPU to interpret a list of quads (the
* faces of our cube) as a list of triangles.
*
* Since this is a very common thing to do
* cogl_get_rectangle_indices() is a convenience function for
* accessing internal index buffers that can be shared.
*/
data.indices = cogl_get_rectangle_indices (ctx, 6 /* n_rectangles */);
data.prim = cogl_primitive_new_p3t2 (ctx, COGL_VERTICES_MODE_TRIANGLES,
G_N_ELEMENTS (vertices),
vertices);
/* Each face will have 6 indices so we have 6 * 6 indices in total... */
cogl_primitive_set_indices (data.prim,
data.indices,
6 * 6);
/* Load a jpeg crate texture from a file */
printf ("crate.jpg (CC by-nc-nd http://bit.ly/9kP45T) ShadowRunner27 http://bit.ly/m1YXLh\n");
data.texture = cogl_texture_new_from_file (COGL_EXAMPLES_DATA "crate.jpg",
COGL_TEXTURE_NO_SLICING,
COGL_PIXEL_FORMAT_ANY,
&error);
if (!data.texture)
g_error ("Failed to load texture: %s", error->message);
/* a CoglPipeline conceptually describes all the state for vertex
* processing, fragment processing and blending geometry. When
* drawing the geometry for the crate this pipeline says to sample a
* single texture during fragment processing... */
data.crate_pipeline = cogl_pipeline_new (ctx);
cogl_pipeline_set_layer_texture (data.crate_pipeline, 0, data.texture);
/* Since the box is made of multiple triangles that will overlap
* when drawn and we don't control the order they are drawn in, we
* enable depth testing to make sure that triangles that shouldn't
* be visible get culled by the GPU. */
cogl_depth_state_init (&depth_state);
cogl_depth_state_set_test_enabled (&depth_state, TRUE);
cogl_pipeline_set_depth_state (data.crate_pipeline, &depth_state, NULL);
/* Setup a Pango font map and context */
data.pango_font_map = COGL_PANGO_FONT_MAP (cogl_pango_font_map_new (ctx));
cogl_pango_font_map_set_use_mipmapping (data.pango_font_map, TRUE);
data.pango_context =
pango_font_map_create_context (PANGO_FONT_MAP (data.pango_font_map));
data.pango_font_desc = pango_font_description_new ();
pango_font_description_set_family (data.pango_font_desc, "Sans");
pango_font_description_set_size (data.pango_font_desc, 30 * PANGO_SCALE);
/* Setup the "Hello Cogl" text */
data.hello_label = pango_layout_new (data.pango_context);
pango_layout_set_font_description (data.hello_label, data.pango_font_desc);
pango_layout_set_text (data.hello_label, "Hello Cogl", -1);
pango_layout_get_extents (data.hello_label, NULL, &hello_label_size);
data.hello_label_width = PANGO_PIXELS (hello_label_size.width);
data.hello_label_height = PANGO_PIXELS (hello_label_size.height);
data.swap_ready = TRUE;
has_swap_notify =
cogl_has_feature (ctx, COGL_FEATURE_ID_SWAP_BUFFERS_EVENT);
if (has_swap_notify)
cogl_onscreen_add_swap_buffers_callback (COGL_ONSCREEN (fb),
swap_notify_cb,
&data);
while (1)
{
CoglPollFD *poll_fds;
int n_poll_fds;
int64_t timeout;
if (data.swap_ready)
{
paint (&data);
cogl_onscreen_swap_buffers (COGL_ONSCREEN (fb));
}
cogl_poll_get_info (ctx, &poll_fds, &n_poll_fds, &timeout);
if (!has_swap_notify)
{
/* If the winsys doesn't support swap event notification
then we'll just redraw constantly */
data.swap_ready = TRUE;
timeout = 0;
}
g_poll ((GPollFD *) poll_fds, n_poll_fds,
timeout == -1 ? -1 : timeout / 1000);
cogl_poll_dispatch (ctx, poll_fds, n_poll_fds);
}
return 0;
}
static CoglHandle
data_to_cogl_handle (const guchar *data,
gboolean has_alpha,
int width,
int height,
int rowstride,
gboolean add_padding)
{
CoglHandle texture, offscreen;
CoglColor clear_color;
guint size;
GError *error;
size = MAX (width, height);
if (!add_padding || width == height)
return cogl_texture_new_from_data (width,
height,
COGL_TEXTURE_NONE,
has_alpha ? COGL_PIXEL_FORMAT_RGBA_8888 : COGL_PIXEL_FORMAT_RGB_888,
COGL_PIXEL_FORMAT_ANY,
rowstride,
data);
texture = cogl_texture_new_with_size (size, size,
COGL_TEXTURE_NO_SLICING,
COGL_PIXEL_FORMAT_ANY);
offscreen = cogl_offscreen_new_with_texture (texture);
error = NULL;
if (!cogl_framebuffer_allocate (offscreen, &error))
{
g_warning ("Failed to allocate FBO (sized %d): %s", size, error->message);
cogl_object_unref (texture);
cogl_object_unref (offscreen);
g_clear_error (&error);
return cogl_texture_new_from_data (width,
height,
COGL_TEXTURE_NONE,
has_alpha ? COGL_PIXEL_FORMAT_RGBA_8888 : COGL_PIXEL_FORMAT_RGB_888,
COGL_PIXEL_FORMAT_ANY,
rowstride,
data);
}
cogl_color_set_from_4ub (&clear_color, 0, 0, 0, 0);
cogl_push_framebuffer (offscreen);
cogl_clear (&clear_color, COGL_BUFFER_BIT_COLOR);
cogl_pop_framebuffer ();
cogl_handle_unref (offscreen);
cogl_texture_set_region (texture,
0, 0,
(size - width) / 2, (size - height) / 2,
width, height,
width, height,
has_alpha ? COGL_PIXEL_FORMAT_RGBA_8888 : COGL_PIXEL_FORMAT_RGB_888,
rowstride,
data);
return texture;
}
static void
paint (TestState *state)
{
CoglPipeline *pipeline = cogl_pipeline_new (test_ctx);
CoglTexture *tex;
CoglColor color;
CoglError *error = NULL;
CoglHandle shader, program;
cogl_color_init_from_4ub (&color, 0, 0, 0, 255);
cogl_clear (&color, COGL_BUFFER_BIT_COLOR);
/* Set the primary vertex color as red */
cogl_color_set_from_4ub (&color, 0xff, 0x00, 0x00, 0xff);
cogl_pipeline_set_color (pipeline, &color);
/* Override the vertex color in the texture environment with a
constant green color provided by a texture */
tex = create_dummy_texture ();
cogl_pipeline_set_layer_texture (pipeline, 0, tex);
cogl_object_unref (tex);
if (!cogl_pipeline_set_layer_combine (pipeline, 0,
"RGBA=REPLACE(TEXTURE)",
&error))
{
g_warning ("Error setting layer combine: %s", error->message);
g_assert_not_reached ();
}
/* Set up a dummy vertex shader that does nothing but the usual
fixed function transform */
shader = cogl_create_shader (COGL_SHADER_TYPE_VERTEX);
cogl_shader_source (shader,
"void\n"
"main ()\n"
"{\n"
" cogl_position_out = "
"cogl_modelview_projection_matrix * "
"cogl_position_in;\n"
" cogl_color_out = cogl_color_in;\n"
" cogl_tex_coord_out[0] = cogl_tex_coord_in;\n"
"}\n");
cogl_shader_compile (shader);
if (!cogl_shader_is_compiled (shader))
{
char *log = cogl_shader_get_info_log (shader);
g_warning ("Shader compilation failed:\n%s", log);
g_free (log);
g_assert_not_reached ();
}
program = cogl_create_program ();
cogl_program_attach_shader (program, shader);
cogl_program_link (program);
cogl_handle_unref (shader);
/* Draw something without the program */
cogl_set_source (pipeline);
cogl_rectangle (0, 0, 50, 50);
/* Draw it again using the program. It should look exactly the same */
cogl_pipeline_set_user_program (pipeline, program);
cogl_handle_unref (program);
cogl_rectangle (50, 0, 100, 50);
cogl_pipeline_set_user_program (pipeline, COGL_INVALID_HANDLE);
cogl_object_unref (pipeline);
}
int
main (int argc, char **argv)
{
ClutterActor *stage = stage;
ClutterActor *side_box;
ClutterActor *button_box;
ClutterActor *box;
ClutterAnimation *anim;
MashLightSet *light_set;
MxStyle *style;
GError *error = NULL;
Data data;
int i;
if (clutter_init (&argc, &argv) != CLUTTER_INIT_SUCCESS)
return 1;
style = mx_style_get_default ();
if (!mx_style_load_from_file (style, "lights.css",
&error))
{
g_warning ("Error setting style: %s", error->message);
g_clear_error (&error);
}
stage = clutter_stage_get_default ();
clutter_actor_set_size (stage, 800, 600);
side_box = mx_table_new ();
clutter_actor_set_name (side_box, "side-box");
clutter_container_add_actor (CLUTTER_CONTAINER (stage), side_box);
clutter_actor_set_size (side_box, 300,
clutter_actor_get_height (stage));
clutter_actor_set_x (side_box,
clutter_actor_get_width (stage)
- clutter_actor_get_width (side_box));
button_box = mx_table_new ();
mx_table_add_actor (MX_TABLE (side_box), button_box, 0, 0);
data.notebook = mx_notebook_new ();
mx_table_add_actor (MX_TABLE (side_box), data.notebook, 1, 0);
data.model = mash_model_new_from_file (MASH_DATA_NONE,
argc > 1
? argv[1]
: "suzanne.ply",
&error);
if (data.model == NULL)
{
g_warning ("Error loading model: %s", error->message);
g_clear_error (&error);
return 1;
}
light_set = mash_light_set_new ();
box = clutter_box_new (clutter_fixed_layout_new ());
clutter_actor_set_size (data.model, 400, 400);
clutter_actor_set_position (data.model, 50.0, 100.0);
clutter_container_add_actor (CLUTTER_CONTAINER (box), data.model);
clutter_container_add_actor (CLUTTER_CONTAINER (stage), box);
g_signal_connect_swapped (box, "paint",
G_CALLBACK (cogl_set_depth_test_enabled),
GINT_TO_POINTER (TRUE));
g_signal_connect_data (box, "paint",
G_CALLBACK (cogl_set_depth_test_enabled),
GINT_TO_POINTER (FALSE), NULL,
G_CONNECT_AFTER | G_CONNECT_SWAPPED);
data.light_marker_material = cogl_material_new ();
{
CoglColor color;
cogl_color_set_from_4ub (&color, 255, 0, 0, 255);
/* Use the layer state to ignore the vertex color from the shader so
that the light marker won't itself be lit */
cogl_material_set_layer_combine_constant (data.light_marker_material, 0,
&color);
cogl_material_set_layer_combine (data.light_marker_material, 0,
"RGBA = REPLACE(CONSTANT)",
NULL);
}
clutter_actor_set_rotation (data.model, CLUTTER_Y_AXIS,
0.0f,
clutter_actor_get_width (data.model) / 2.0f,
0.0f,
0.0f);
anim = clutter_actor_animate (data.model, CLUTTER_LINEAR, 3000,
"rotation-angle-y", 360.0f,
NULL);
clutter_animation_set_loop (anim, TRUE);
for (i = 0; i < N_LIGHTS; i++)
{
ClutterActor *table = mx_table_new ();
ClutterActor *button;
static ClutterActor *(* constructors[N_LIGHTS]) (void) =
{ mash_directional_light_new,
mash_point_light_new,
mash_spot_light_new };
static const ClutterColor black = { 0, 0, 0, 255 };
data.lights[i] = constructors[i] ();
button = mx_button_new_with_label (G_OBJECT_TYPE_NAME (data.lights[i]));
mx_table_add_actor (MX_TABLE (button_box), button, i, 0);
/* Default to disable all of the lights */
g_object_set (data.lights[i],
"ambient", &black,
"diffuse", &black,
"specular", &black,
NULL);
data.notebook_buttons[i] = button;
clutter_container_add_actor (CLUTTER_CONTAINER (box), data.lights[i]);
mash_light_set_add_light (light_set, MASH_LIGHT (data.lights[i]));
add_color_prop (table, "ambient light",
G_OBJECT (data.lights[i]), "ambient");
add_color_prop (table, "diffuse light",
G_OBJECT (data.lights[i]), "diffuse");
add_color_prop (table, "specular light",
G_OBJECT (data.lights[i]), "specular");
if (MASH_IS_POINT_LIGHT (data.lights[i]))
{
add_float_prop (table, "constant attenuation",
G_OBJECT (data.lights[i]), "constant-attenuation",
0.0f, 10.0f);
add_float_prop (table, "linear attenuation",
G_OBJECT (data.lights[i]), "linear-attenuation",
0.0f, 10.0f);
add_float_prop (table, "quadratic attenuation",
G_OBJECT (data.lights[i]), "quadratic-attenuation",
0.0f, 10.0f);
}
if (MASH_IS_SPOT_LIGHT (data.lights[i]))
{
clutter_actor_set_x (data.lights[i], 250);
add_float_prop (table, "spot cutoff",
G_OBJECT (data.lights[i]), "spot-cutoff",
0.0f, 90.0f);
add_float_prop (table, "spot exponent",
G_OBJECT (data.lights[i]), "spot-exponent",
0.0f, 128.0f);
}
clutter_container_add_actor (CLUTTER_CONTAINER (data.notebook), table);
data.notebook_pages[i] = table;
}
{
ClutterActor *button;
ClutterActor *table;
CoglHandle material;
float maximum_shininess;
material = mash_model_get_pipeline (MASH_MODEL (data.model));
/* Before version 1.3.10 on the 1.3 branch and 1.2.14 on the 1.2
branch Cogl would remap the shininess property to the range
[0,1]. After this it is just a value greater or equal to zero
(but GL imposes a limit of 128.0) */
if (clutter_check_version (1, 3, 9)
|| (clutter_major_version == 1
&& clutter_minor_version == 2
&& clutter_micro_version >= 13))
maximum_shininess = 128.0f;
else
maximum_shininess = 1.0f;
cogl_material_set_shininess (material, maximum_shininess);
button = mx_button_new_with_label ("Material");
data.notebook_buttons[i] = button;
mx_table_add_actor (MX_TABLE (button_box), button, i, 0);
table = mx_table_new ();
data.notebook_pages[i] = table;
clutter_container_add_actor (CLUTTER_CONTAINER (data.notebook), table);
add_material_color_prop (table, "emission", material,
cogl_material_set_emission,
cogl_material_get_emission);
add_material_color_prop (table, "diffuse", material,
cogl_material_set_diffuse,
cogl_material_get_diffuse);
add_material_color_prop (table, "ambient", material,
cogl_material_set_ambient,
cogl_material_get_ambient);
add_material_color_prop (table, "specular", material,
cogl_material_set_specular,
cogl_material_get_specular);
add_material_float_prop (table, "shininess", material,
0.0f, maximum_shininess,
cogl_material_set_shininess,
cogl_material_get_shininess);
}
mash_model_set_light_set (MASH_MODEL (data.model), light_set);
g_object_unref (light_set);
for (i = 0; i < N_PAGES; i++)
{
g_signal_connect (data.notebook_buttons[i], "notify::toggled",
G_CALLBACK (notebook_button_cb), &data);
mx_button_set_is_toggle (MX_BUTTON (data.notebook_buttons[i]), TRUE);
}
mx_button_set_toggled (MX_BUTTON (data.notebook_buttons[0]), TRUE);
g_signal_connect (stage, "motion-event",
G_CALLBACK (motion_event_cb),
&data);
clutter_actor_show (stage);
clutter_main ();
cogl_handle_unref (data.light_marker_material);
return 0;
}
static void
mx_scroll_view_paint (ClutterActor *actor)
{
ClutterActorBox box;
gfloat w, h;
MxAdjustment *vadjustment = NULL, *hadjustment = NULL;
MxScrollViewPrivate *priv = MX_SCROLL_VIEW (actor)->priv;
ClutterColor *color;
guint8 r, g, b;
const gint shadow = 15;
mx_stylable_get (MX_STYLABLE (actor), "background-color", &color, NULL);
r = color->red;
g = color->green;
b = color->blue;
clutter_color_free (color);
/* MxBin will paint the child */
CLUTTER_ACTOR_CLASS (mx_scroll_view_parent_class)->paint (actor);
clutter_actor_get_allocation_box (actor, &box);
w = box.x2 - box.x1;
h = box.y2 - box.y1;
/* paint our custom children */
if (CLUTTER_ACTOR_IS_VISIBLE (priv->hscroll))
{
clutter_actor_paint (priv->hscroll);
clutter_actor_get_allocation_box (priv->hscroll, &box);
h -= (box.y2 - box.y1);
hadjustment = mx_scroll_bar_get_adjustment (MX_SCROLL_BAR(priv->hscroll));
}
if (CLUTTER_ACTOR_IS_VISIBLE (priv->vscroll))
{
clutter_actor_paint (priv->vscroll);
clutter_actor_get_allocation_box (priv->vscroll, &box);
w -= (box.x2 - box.x1);
vadjustment = mx_scroll_bar_get_adjustment (MX_SCROLL_BAR(priv->vscroll));
}
/* set up the matrial using dummy set source call */
cogl_set_source_color4ub (0, 0, 0, 0);
if (vadjustment)
{
gdouble len;
if ((len = mx_adjustment_get_value (vadjustment)) > 0)
{
CoglTextureVertex top[4] = { { 0,}, };
if (len > shadow)
len = shadow;
top[1].x = w;
top[2].x = w;
top[2].y = len;
top[3].y = len;
cogl_color_set_from_4ub (&top[0].color, r, g, b, 0xff);
cogl_color_set_from_4ub (&top[1].color, r, g, b, 0xff);
cogl_color_set_from_4ub (&top[2].color, 0, 0, 0, 0);
cogl_color_set_from_4ub (&top[3].color, 0, 0, 0, 0);
cogl_polygon (top, 4, TRUE);
}
if ((len = (mx_adjustment_get_upper (vadjustment)
- mx_adjustment_get_page_size (vadjustment))
- mx_adjustment_get_value (vadjustment)) > 0)
{
CoglTextureVertex bottom[4] = { {0, }, };
if (len > shadow)
len = shadow;
bottom[0].x = w;
bottom[0].y = h;
bottom[1].y = h;
bottom[2].y = h - len;
bottom[3].x = w;
bottom[3].y = h - len;
cogl_color_set_from_4ub (&bottom[0].color, r, g, b, 0xff);
cogl_color_set_from_4ub (&bottom[1].color, r, g, b, 0xff);
cogl_color_set_from_4ub (&bottom[2].color, 0, 0, 0, 0);
cogl_color_set_from_4ub (&bottom[3].color, 0, 0, 0, 0);
cogl_polygon (bottom, 4, TRUE);
}
}
if (hadjustment)
{
gdouble len;
if ((len = mx_adjustment_get_value (hadjustment)) > 0)
{
CoglTextureVertex left[4] = { { 0, }, };
if (len > shadow)
len = shadow;
left[0].y = h;
left[2].x = len;
left[3].x = len;
left[3].y = h;
cogl_color_set_from_4ub (&left[0].color, r, g, b, 0xff);
cogl_color_set_from_4ub (&left[1].color, r, g, b, 0xff);
cogl_color_set_from_4ub (&left[2].color, 0, 0, 0, 0);
cogl_color_set_from_4ub (&left[3].color, 0, 0, 0, 0);
cogl_polygon (left, 4, TRUE);
}
if ((len = (mx_adjustment_get_upper (hadjustment)
- mx_adjustment_get_page_size (hadjustment))
- mx_adjustment_get_value (hadjustment)) > 0)
{
CoglTextureVertex right[4] = { { 0, }, };
if (len > shadow)
len = shadow;
right[0].x = w;
right[1].x = w;
right[1].y = h;
right[2].x = w - len;
right[2].y = h;
right[3].x = w - len;
cogl_color_set_from_4ub (&right[0].color, r, g, b, 0xff);
cogl_color_set_from_4ub (&right[1].color, r, g, b, 0xff);
cogl_color_set_from_4ub (&right[2].color, 0, 0, 0, 0);
cogl_color_set_from_4ub (&right[3].color, 0, 0, 0, 0);
cogl_polygon (right, 4, TRUE);
}
}
}
static void
st_drawing_area_paint (ClutterActor *self)
{
StDrawingArea *area = ST_DRAWING_AREA (self);
StDrawingAreaPrivate *priv = area->priv;
StThemeNode *theme_node = st_widget_get_theme_node (ST_WIDGET (self));
ClutterActorBox allocation_box;
ClutterActorBox content_box;
int width, height;
CoglColor color;
guint8 paint_opacity;
(CLUTTER_ACTOR_CLASS (st_drawing_area_parent_class))->paint (self);
clutter_actor_get_allocation_box (self, &allocation_box);
st_theme_node_get_content_box (theme_node, &allocation_box, &content_box);
width = (int)(0.5 + content_box.x2 - content_box.x1);
height = (int)(0.5 + content_box.y2 - content_box.y1);
if (priv->material == COGL_INVALID_HANDLE)
priv->material = cogl_material_new ();
if (priv->texture != COGL_INVALID_HANDLE &&
(width != cogl_texture_get_width (priv->texture) ||
height != cogl_texture_get_height (priv->texture)))
{
cogl_handle_unref (priv->texture);
priv->texture = COGL_INVALID_HANDLE;
}
if (width > 0 && height > 0)
{
if (priv->texture == COGL_INVALID_HANDLE)
{
priv->texture = cogl_texture_new_with_size (width, height,
COGL_TEXTURE_NONE,
CLUTTER_CAIRO_FORMAT_ARGB32);
priv->needs_repaint = TRUE;
}
if (priv->needs_repaint)
{
cairo_surface_t *surface;
surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, width, height);
priv->context = cairo_create (surface);
priv->in_repaint = TRUE;
priv->needs_repaint = FALSE;
g_signal_emit ((GObject*)area, st_drawing_area_signals[REPAINT], 0);
priv->in_repaint = FALSE;
cairo_destroy (priv->context);
priv->context = NULL;
cogl_texture_set_region (priv->texture, 0, 0, 0, 0, width, height, width, height,
CLUTTER_CAIRO_FORMAT_ARGB32,
cairo_image_surface_get_stride (surface),
cairo_image_surface_get_data (surface));
cairo_surface_destroy (surface);
}
}
cogl_material_set_layer (priv->material, 0, priv->texture);
if (priv->texture)
{
paint_opacity = clutter_actor_get_paint_opacity (self);
cogl_color_set_from_4ub (&color,
paint_opacity, paint_opacity, paint_opacity, paint_opacity);
cogl_material_set_color (priv->material, &color);
cogl_set_source (priv->material);
cogl_rectangle_with_texture_coords (content_box.x1, content_box.y1,
width, height,
0.0f, 0.0f, 1.0f, 1.0f);
}
}
