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56 lines
1.8 KiB
C
56 lines
1.8 KiB
C
/*
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* Copyright 2024 Google LLC
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "text_layer_flow.h"
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#include "scroll_layer.h"
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static bool prv_is_container_layer(const Layer *layer) {
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return scroll_layer_is_instance(layer);
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}
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Layer *text_layer_find_first_paging_container(const TextLayer *text_layer) {
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Layer *layer = text_layer->layer.parent;
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while (layer) {
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if (prv_is_container_layer(layer)) {
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return layer;
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}
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layer = layer->parent;
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}
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return NULL;
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}
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bool text_layer_calc_text_flow_paging_values(const TextLayer *text_layer,
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GPoint *content_origin_on_screen,
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GRect *page_rect_on_screen) {
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if (text_layer == NULL || text_layer->layer.window == NULL || text_layer->layer.parent == NULL) {
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return false;
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}
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if (content_origin_on_screen) {
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*content_origin_on_screen = layer_convert_point_to_screen(&text_layer->layer, GPointZero);
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}
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if (page_rect_on_screen) {
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const Layer *container =
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text_layer_find_first_paging_container(text_layer) ?: &text_layer->layer;
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layer_get_global_frame(container, page_rect_on_screen);
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if (container == &text_layer->layer) {
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page_rect_on_screen->size.h = TEXT_LAYER_FLOW_DEFAULT_PAGING_HEIGHT;
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}
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}
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return true;
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}
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