364 lines
13 KiB
C
364 lines
13 KiB
C
/*
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* This file is part of the Micro Python project, http://micropython.org/
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*
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* The MIT License (MIT)
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*
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* Copyright (c) 2018 Scott Shawcroft for Adafruit Industries
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "shared-bindings/displayio/Group.h"
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#include "py/runtime.h"
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#include "shared-bindings/displayio/TileGrid.h"
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void common_hal_displayio_group_construct(displayio_group_t* self, uint32_t max_size, uint32_t scale, mp_int_t x, mp_int_t y) {
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displayio_group_child_t* children = m_new(displayio_group_child_t, max_size);
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displayio_group_construct(self, children, max_size, scale, x, y);
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}
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bool common_hal_displayio_group_get_hidden(displayio_group_t* self) {
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return self->hidden;
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}
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void common_hal_displayio_group_set_hidden(displayio_group_t* self, bool hidden) {
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if (self->hidden == hidden) {
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return;
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}
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self->hidden = hidden;
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if (self->hidden_by_parent) {
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return;
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}
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for (size_t i = 0; i < self->size; i++) {
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mp_obj_t layer = self->children[i].native;
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if (MP_OBJ_IS_TYPE(layer, &displayio_tilegrid_type)) {
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displayio_tilegrid_set_hidden_by_parent(layer, hidden);
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} else if (MP_OBJ_IS_TYPE(layer, &displayio_group_type)) {
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displayio_group_set_hidden_by_parent(layer, hidden);
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}
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}
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}
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void displayio_group_set_hidden_by_parent(displayio_group_t *self, bool hidden) {
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if (self->hidden_by_parent == hidden) {
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return;
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}
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self->hidden_by_parent = hidden;
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// If we're already hidden, then we're done.
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if (self->hidden) {
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return;
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}
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for (size_t i = 0; i < self->size; i++) {
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mp_obj_t layer = self->children[i].native;
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if (MP_OBJ_IS_TYPE(layer, &displayio_tilegrid_type)) {
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displayio_tilegrid_set_hidden_by_parent(layer, hidden);
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} else if (MP_OBJ_IS_TYPE(layer, &displayio_group_type)) {
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displayio_group_set_hidden_by_parent(layer, hidden);
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}
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}
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}
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uint32_t common_hal_displayio_group_get_scale(displayio_group_t* self) {
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return self->scale;
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}
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bool displayio_group_get_previous_area(displayio_group_t *self, displayio_area_t* area) {
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bool first = true;
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for (size_t i = 0; i < self->size; i++) {
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mp_obj_t layer = self->children[i].native;
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displayio_area_t layer_area;
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if (MP_OBJ_IS_TYPE(layer, &displayio_tilegrid_type)) {
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if (!displayio_tilegrid_get_previous_area(layer, &layer_area)) {
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continue;
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}
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} else if (MP_OBJ_IS_TYPE(layer, &displayio_group_type)) {
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if (!displayio_group_get_previous_area(layer, &layer_area)) {
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continue;
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}
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}
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if (first) {
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displayio_area_copy(&layer_area, area);
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first = false;
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} else {
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displayio_area_expand(area, &layer_area);
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}
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}
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if (self->item_removed) {
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if (first) {
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displayio_area_copy(&self->dirty_area, area);
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first = false;
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} else {
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displayio_area_expand(area, &self->dirty_area);
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}
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}
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return !first;
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}
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static void _update_child_transforms(displayio_group_t* self) {
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if (!self->in_group) {
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return;
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}
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for (size_t i = 0; i < self->size; i++) {
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mp_obj_t layer = self->children[i].native;
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if (MP_OBJ_IS_TYPE(layer, &displayio_tilegrid_type)) {
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displayio_tilegrid_update_transform(layer, &self->absolute_transform);
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} else if (MP_OBJ_IS_TYPE(layer, &displayio_group_type)) {
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displayio_group_update_transform(layer, &self->absolute_transform);
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}
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}
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}
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void displayio_group_update_transform(displayio_group_t *self,
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const displayio_buffer_transform_t* parent_transform) {
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self->in_group = parent_transform != NULL;
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if (self->in_group) {
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int16_t x = self->x;
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int16_t y = self->y;
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if (parent_transform->transpose_xy) {
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x = y;
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y = self->x;
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}
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self->absolute_transform.x = parent_transform->x + parent_transform->dx * x;
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self->absolute_transform.y = parent_transform->y + parent_transform->dy * y;
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self->absolute_transform.dx = parent_transform->dx * self->scale;
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self->absolute_transform.dy = parent_transform->dy * self->scale;
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self->absolute_transform.transpose_xy = parent_transform->transpose_xy;
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self->absolute_transform.mirror_x = parent_transform->mirror_x;
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self->absolute_transform.mirror_y = parent_transform->mirror_y;
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self->absolute_transform.scale = parent_transform->scale * self->scale;
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}
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_update_child_transforms(self);
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}
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void common_hal_displayio_group_set_scale(displayio_group_t* self, uint32_t scale) {
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if (self->scale == scale) {
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return;
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}
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uint8_t parent_scale = self->absolute_transform.scale / self->scale;
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self->absolute_transform.dx = self->absolute_transform.dx / self->scale * scale;
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self->absolute_transform.dy = self->absolute_transform.dy / self->scale * scale;
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self->absolute_transform.scale = parent_scale * scale;
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self->scale = scale;
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_update_child_transforms(self);
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}
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mp_int_t common_hal_displayio_group_get_x(displayio_group_t* self) {
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return self->x;
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}
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void common_hal_displayio_group_set_x(displayio_group_t* self, mp_int_t x) {
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if (self->x == x) {
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return;
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}
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if (self->absolute_transform.transpose_xy) {
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int16_t dy = self->absolute_transform.dy / self->scale;
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self->absolute_transform.y += dy * (x - self->x);
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} else {
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int16_t dx = self->absolute_transform.dx / self->scale;
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self->absolute_transform.x += dx * (x - self->x);
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}
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self->x = x;
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_update_child_transforms(self);
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}
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mp_int_t common_hal_displayio_group_get_y(displayio_group_t* self) {
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return self->y;
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}
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void common_hal_displayio_group_set_y(displayio_group_t* self, mp_int_t y) {
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if (self->y == y) {
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return;
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}
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if (self->absolute_transform.transpose_xy) {
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int8_t dx = self->absolute_transform.dx / self->scale;
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self->absolute_transform.x += dx * (y - self->y);
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} else {
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int8_t dy = self->absolute_transform.dy / self->scale;
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self->absolute_transform.y += dy * (y - self->y);
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}
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self->y = y;
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_update_child_transforms(self);
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}
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static mp_obj_t _add_layer(displayio_group_t* self, mp_obj_t layer) {
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mp_obj_t native_layer = mp_instance_cast_to_native_base(layer, &displayio_group_type);
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if (native_layer == MP_OBJ_NULL) {
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native_layer = mp_instance_cast_to_native_base(layer, &displayio_tilegrid_type);
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if (native_layer == MP_OBJ_NULL) {
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mp_raise_ValueError(translate("Layer must be a Group or TileGrid subclass."));
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}
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displayio_tilegrid_t* tilegrid = native_layer;
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if (tilegrid->in_group) {
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mp_raise_ValueError(translate("Layer already in a group."));
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} else {
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tilegrid->in_group = true;
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}
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displayio_tilegrid_update_transform(tilegrid, &self->absolute_transform);
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} else {
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displayio_group_t* group = native_layer;
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if (group->in_group) {
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mp_raise_ValueError(translate("Layer already in a group."));
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} else {
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group->in_group = true;
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}
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displayio_group_update_transform(group, &self->absolute_transform);
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}
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return native_layer;
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}
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static void _remove_layer(displayio_group_t* self, size_t index) {
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mp_obj_t layer = self->children[index].native;
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displayio_area_t layer_area;
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bool rendered_last_frame = false;
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if (MP_OBJ_IS_TYPE(layer, &displayio_tilegrid_type)) {
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displayio_tilegrid_t* tilegrid = layer;
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rendered_last_frame = displayio_tilegrid_get_previous_area(tilegrid, &layer_area);
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displayio_tilegrid_update_transform(tilegrid, NULL);
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} else if (MP_OBJ_IS_TYPE(layer, &displayio_group_type)) {
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displayio_group_t* group = layer;
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rendered_last_frame = displayio_group_get_previous_area(group, &layer_area);
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displayio_group_update_transform(group, NULL);
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}
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if (!rendered_last_frame) {
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return;
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}
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if (!self->item_removed) {
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displayio_area_copy(&layer_area, &self->dirty_area);
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} else {
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displayio_area_expand(&self->dirty_area, &layer_area);
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}
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self->item_removed = true;
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}
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void common_hal_displayio_group_insert(displayio_group_t* self, size_t index, mp_obj_t layer) {
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if (self->size == self->max_size) {
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mp_raise_RuntimeError(translate("Group full"));
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}
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mp_obj_t native_layer = _add_layer(self, layer);
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// Shift everything right.
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for (size_t i = self->size; i > index; i--) {
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self->children[i] = self->children[i - 1];
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}
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self->children[index].native = native_layer;
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self->children[index].original = layer;
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self->size++;
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}
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mp_obj_t common_hal_displayio_group_pop(displayio_group_t* self, size_t index) {
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self->size--;
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mp_obj_t item = self->children[index].original;
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_remove_layer(self, index);
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// Shift everything left.
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for (size_t i = index; i < self->size; i++) {
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self->children[i] = self->children[i + 1];
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}
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self->children[self->size].native = NULL;
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self->children[self->size].original = NULL;
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return item;
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}
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mp_int_t common_hal_displayio_group_index(displayio_group_t* self, mp_obj_t layer) {
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for (size_t i = 0; i < self->size; i++) {
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if (self->children[i].original == layer) {
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return i;
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}
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}
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return -1;
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}
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size_t common_hal_displayio_group_get_len(displayio_group_t* self) {
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return self->size;
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}
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mp_obj_t common_hal_displayio_group_get(displayio_group_t* self, size_t index) {
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return self->children[index].original;
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}
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void common_hal_displayio_group_set(displayio_group_t* self, size_t index, mp_obj_t layer) {
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mp_obj_t native_layer = _add_layer(self, layer);
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_remove_layer(self, index);
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self->children[index].native = native_layer;
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self->children[index].original = layer;
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}
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void displayio_group_construct(displayio_group_t* self, displayio_group_child_t* child_array, uint32_t max_size, uint32_t scale, mp_int_t x, mp_int_t y) {
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self->x = x;
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self->y = y;
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self->children = child_array;
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self->max_size = max_size;
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self->item_removed = false;
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self->scale = scale;
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self->in_group = false;
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}
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bool displayio_group_fill_area(displayio_group_t *self, const _displayio_colorspace_t* colorspace, const displayio_area_t* area, uint32_t* mask, uint32_t* buffer) {
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// Track if any of the layers finishes filling in the given area. We can ignore any remaining
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// layers at that point.
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bool full_coverage = false;
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for (int32_t i = self->size - 1; i >= 0 ; i--) {
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mp_obj_t layer = self->children[i].native;
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if (MP_OBJ_IS_TYPE(layer, &displayio_tilegrid_type)) {
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if (displayio_tilegrid_fill_area(layer, colorspace, area, mask, buffer)) {
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full_coverage = true;
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break;
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}
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} else if (MP_OBJ_IS_TYPE(layer, &displayio_group_type)) {
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if (displayio_group_fill_area(layer, colorspace, area, mask, buffer)) {
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full_coverage = true;
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break;
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}
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}
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}
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return full_coverage;
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}
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void displayio_group_finish_refresh(displayio_group_t *self) {
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self->item_removed = false;
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for (int32_t i = self->size - 1; i >= 0 ; i--) {
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mp_obj_t layer = self->children[i].native;
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if (MP_OBJ_IS_TYPE(layer, &displayio_tilegrid_type)) {
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displayio_tilegrid_finish_refresh(layer);
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} else if (MP_OBJ_IS_TYPE(layer, &displayio_group_type)) {
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displayio_group_finish_refresh(layer);
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}
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}
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}
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displayio_area_t* displayio_group_get_refresh_areas(displayio_group_t *self, displayio_area_t* tail) {
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if (self->item_removed) {
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self->dirty_area.next = tail;
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tail = &self->dirty_area;
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}
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for (int32_t i = self->size - 1; i >= 0 ; i--) {
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mp_obj_t layer = self->children[i].native;
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if (MP_OBJ_IS_TYPE(layer, &displayio_tilegrid_type)) {
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tail = displayio_tilegrid_get_refresh_areas(layer, tail);
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} else if (MP_OBJ_IS_TYPE(layer, &displayio_group_type)) {
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tail = displayio_group_get_refresh_areas(layer, tail);
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}
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}
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return tail;
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}
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