rut_fold_t *
rut_fold_new(rut_shell_t *shell, const char *label)
{
rut_fold_t *fold =
rut_object_alloc0(rut_fold_t, &rut_fold_type, _rut_fold_init_type);
rut_box_layout_t *header_hbox;
rut_stack_t *left_header_stack;
rut_box_layout_t *left_header_hbox;
rut_bin_t *label_bin;
rut_bin_t *fold_icon_align;
cg_texture_t *texture;
cg_color_t black;
fold->shell = shell;
rut_graphable_init(fold);
rig_introspectable_init(fold, _rut_fold_prop_specs, fold->properties);
fold->vbox = rut_box_layout_new(shell,
RUT_BOX_LAYOUT_PACKING_TOP_TO_BOTTOM);
header_hbox = rut_box_layout_new(shell,
RUT_BOX_LAYOUT_PACKING_LEFT_TO_RIGHT);
rut_box_layout_add(fold->vbox, false, header_hbox);
rut_object_unref(header_hbox);
left_header_stack = rut_stack_new(shell, 0, 0);
rut_box_layout_add(header_hbox, true, left_header_stack);
rut_object_unref(left_header_stack);
left_header_hbox =
rut_box_layout_new(shell, RUT_BOX_LAYOUT_PACKING_LEFT_TO_RIGHT);
rut_stack_add(left_header_stack, left_header_hbox);
rut_object_unref(left_header_hbox);
fold_icon_align = rut_bin_new(shell);
rut_bin_set_x_position(fold_icon_align, RUT_BIN_POSITION_BEGIN);
rut_bin_set_y_position(fold_icon_align, RUT_BIN_POSITION_CENTER);
rut_bin_set_right_padding(fold_icon_align, 10);
rut_box_layout_add(left_header_hbox, false, fold_icon_align);
rut_object_unref(fold_icon_align);
texture = rut_load_texture_from_data_file(shell, "tri-fold-up.png", NULL);
fold->fold_up_icon = rut_nine_slice_new(shell,
texture,
0,
0,
0,
0,
cg_texture_get_width(texture),
cg_texture_get_height(texture));
cg_object_unref(texture);
texture = rut_load_texture_from_data_file(shell, "tri-fold-down.png",
NULL);
fold->fold_down_icon = rut_nine_slice_new(shell,
texture,
0,
0,
0,
0,
cg_texture_get_width(texture),
cg_texture_get_height(texture));
cg_object_unref(texture);
fold->fold_icon_shim = rut_fixed_new(shell, cg_texture_get_width(texture),
cg_texture_get_height(texture));
rut_bin_set_child(fold_icon_align, fold->fold_icon_shim);
rut_object_unref(fold->fold_icon_shim);
rut_graphable_add_child(fold->fold_icon_shim, fold->fold_down_icon);
/* NB: we keep references to the icons so they can be swapped
* without getting disposed. */
label_bin = rut_bin_new(shell);
rut_bin_set_y_position(label_bin, RUT_BIN_POSITION_CENTER);
rut_box_layout_add(left_header_hbox, false, label_bin);
rut_object_unref(label_bin);
fold->label = rut_text_new_with_text(shell, NULL, label);
rut_bin_set_child(label_bin, fold->label);
rut_object_unref(fold->label);
fold->header_hbox_right =
rut_box_layout_new(shell, RUT_BOX_LAYOUT_PACKING_RIGHT_TO_LEFT);
rut_box_layout_add(header_hbox, true, fold->header_hbox_right);
rut_object_unref(fold->header_hbox_right);
cg_color_init_from_4f(&black, 0, 0, 0, 1);
rut_fold_set_folder_color(fold, &black);
rut_fold_set_label_color(fold, &black);
rut_graphable_add_child(fold, fold->vbox);
rut_object_unref(fold->vbox);
fold->input_region =
rut_input_region_new_rectangle(0, 0, 0, 0, input_cb, fold);
rut_stack_add(left_header_stack, fold->input_region);
rut_object_unref(fold->input_region);
fold->folded = false;
return fold;
}
cg_texture_t *
rig_downsampler_downsample(rig_downsampler_t *downsampler,
cg_texture_t *source,
int scale_factor_x,
int scale_factor_y)
{
cg_texture_components_t components;
int src_w, src_h;
int dest_width, dest_height;
cg_pipeline_t *pipeline;
/* validation */
src_w = cg_texture_get_width(source);
src_h = cg_texture_get_height(source);
if (src_w % scale_factor_x != 0) {
c_warning("downsample: the width of the texture (%d) is not a "
"multiple of the scale factor (%d)",
src_w,
scale_factor_x);
}
if (src_h % scale_factor_y != 0) {
c_warning("downsample: the height of the texture (%d) is not a "
"multiple of the scale factor (%d)",
src_h,
scale_factor_y);
}
/* create the destination texture up front */
dest_width = src_w / scale_factor_x;
dest_height = src_h / scale_factor_y;
components = cg_texture_get_components(source);
if (downsampler->dest == NULL ||
cg_texture_get_width(downsampler->dest) != dest_width ||
cg_texture_get_height(downsampler->dest) != dest_height ||
cg_texture_get_components(downsampler->dest) != components) {
cg_offscreen_t *offscreen;
cg_texture_2d_t *texture_2d = cg_texture_2d_new_with_size(
downsampler->engine->shell->cg_device, dest_width, dest_height);
cg_texture_set_components(texture_2d, components);
_rig_downsampler_reset(downsampler);
downsampler->dest = texture_2d;
/* create the FBO to render the downsampled texture */
offscreen = cg_offscreen_new_with_texture(downsampler->dest);
downsampler->fb = offscreen;
/* create the camera that will setup the scene for the render */
downsampler->camera = rig_camera_new(downsampler->engine,
dest_width, /* ortho width */
dest_height, /* ortho height */
downsampler->fb);
rut_camera_set_near_plane(downsampler->camera, -1.f);
rut_camera_set_far_plane(downsampler->camera, 1.f);
}
pipeline = cg_pipeline_copy(downsampler->pipeline);
cg_pipeline_set_layer_texture(pipeline, 0, source);
rut_camera_flush(downsampler->camera);
cg_framebuffer_draw_rectangle(
downsampler->fb, pipeline, 0, 0, dest_width, dest_height);
rut_camera_end_frame(downsampler->camera);
cg_object_unref(pipeline);
return cg_object_ref(downsampler->dest);
}