mirror of
https://github.com/xiaoqidun/ofdgo.git
synced 2026-10-30 01:27:26 +08:00
85 lines
2.5 KiB
Go
85 lines
2.5 KiB
Go
// Copyright 2025-2026 肖其顿 (XIAO QI DUN)
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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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package ofdgo
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import (
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"context"
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"fmt"
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"github.com/xiaoqidun/pdfgo"
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)
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// annotationTriggerActions 按事件转换注解动作，页面打开动作独立于注解外观
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// 入参: ctx 取消上下文, annotation PDF注解, event OFD事件
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// 返回: []Action 动作序列, error 事件、动作或取消错误
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func (p *pdfImporter) annotationTriggerActions(ctx context.Context, annotation pdfgo.Annotation, event string) ([]Action, error) {
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if annotation.Subtype == "Widget" && event == "CLICK" {
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return nil, ctx.Err()
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}
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triggers, err := p.reader.ReadAnnotationTriggers(ctx, annotation)
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if err != nil {
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return nil, err
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}
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if len(triggers) == 0 {
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return nil, ctx.Err()
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}
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flags, err := p.reader.ReadAnnotationFlags(annotation)
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if err != nil {
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return nil, err
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}
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var converted []Action
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for _, trigger := range triggers {
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if trigger.Event == "PC" || trigger.Event == "PV" || trigger.Event == "PI" {
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if event == "PO" {
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if err := p.unmappedTrigger(ctx, "annotation", trigger); err != nil {
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return nil, err
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}
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}
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continue
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}
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if (trigger.Event == "PO") != (event == "PO") {
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continue
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}
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if flags&64 != 0 && (trigger.Event == "E" || trigger.Event == "X" || trigger.Event == "D" || trigger.Event == "U") {
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continue
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}
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switch trigger.Event {
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case "U", "PO":
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default:
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return nil, &pdfgo.UnsupportedError{Feature: "annotation trigger " + string(trigger.Event)}
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}
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currentPage := p.page
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if event == "PO" {
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currentPage = p.pageActionPage
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}
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var source pdfgo.Annotation
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if event == "CLICK" {
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source = annotation
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}
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actions, err := p.eventActions(ctx, trigger.Action, event, source, ¤tPage)
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if err != nil {
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return nil, err
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}
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converted = append(converted, actions...)
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if event == "PO" {
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p.pageActionPage = currentPage
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}
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}
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if event == "PO" && len(converted) != 0 && (p.page < 0 || p.page >= len(p.editor.pages)) {
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return nil, fmt.Errorf("invalid annotation trigger page")
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}
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return converted, ctx.Err()
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}
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