mirror of
https://github.com/xiaoqidun/ofdgo.git
synced 2026-10-29 17:27:08 +08:00
665 lines
22 KiB
Go
665 lines
22 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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"bytes"
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"context"
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"fmt"
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"image"
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"path"
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"slices"
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"strconv"
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"strings"
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baseimage "github.com/xiaoqidun/ofdgo/internal/base/image"
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)
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// ResourceTarget 描述当前页可绑定资源动作的图元，Bound表示已有该资源的点击动作
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type ResourceTarget struct {
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ID string `json:"id"`
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Type string `json:"type"`
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Text string `json:"text,omitempty"`
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Bound bool `json:"bound"`
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}
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// editorResourcePreview 记录失效传播节点及修改片段，不保留原始XML解析树
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type editorResourcePreview struct {
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parent *editorResourcePreview
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resource string
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file string
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patches []editorXMLPatch
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}
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// resourceImageMaskKey 区分包内共享图片文件及尚未提交的替换像素
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type resourceImageMaskKey struct {
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file string
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replacement bool
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}
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// Resources 获取当前编辑快照的资源，覆盖正文、模板、注解、图案和复合图元
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// 入参: ctx 取消上下文
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// 返回: []ResourceInfo 资源及引用位置, error 快照或结构错误
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func (e *Editor) Resources(ctx context.Context) ([]ResourceInfo, error) {
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reader, err := e.ReaderContext(ctx)
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if err != nil {
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return nil, err
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}
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return reader.Resources(ctx)
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}
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// ResourceTargets 列出当前页可独立绑定音视频或附件动作的图元及绑定状态
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// 模板和共享复合资源的内部成员不作为普通页面图元返回
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// 入参: ctx 取消上下文, kind 为Audio、Video或Attachment, id 资源标识, page 零基页码
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// 返回: []ResourceTarget 按绘制顺序排列的候选, error 资源、页面或取消错误
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func (e *Editor) ResourceTargets(ctx context.Context, kind, id string, page int) ([]ResourceTarget, error) {
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if kind != "Audio" && kind != "Video" && kind != "Attachment" {
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return nil, fmt.Errorf("resource does not support actions")
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}
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items, err := e.Resources(ctx)
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if err != nil {
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return nil, err
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}
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if _, err := findResource(items, kind, id); err != nil {
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return nil, err
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}
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content, err := e.page(page)
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if err != nil {
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return nil, err
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}
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var result []ResourceTarget
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for _, layer := range content.Content.Layer {
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for _, object := range layer.Objects {
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if err := ctx.Err(); err != nil {
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return nil, err
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}
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actions, err := resourceObjectActions(object)
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if err != nil {
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continue
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}
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target := ResourceTarget{ID: editorObjectID(object), Type: object.Type}
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if object.Type == "TextObject" {
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target.Text = object.TextObject.Text()
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}
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target.Bound = slices.ContainsFunc(actions, func(action Action) bool { return resourceActionMatches(action, kind, id) })
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result = append(result, target)
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}
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}
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return result, ctx.Err()
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}
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// ImportMedia 导入可独立管理的音视频资源，即使尚未绑定动作也保留在当前文档中
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// 不解码或转码，格式由调用方提供；修改隔离其他文档及历史版本，支持撤销
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// 入参: ctx 取消上下文, kind 为Audio或Video, format 媒体格式, data 完整媒体数据
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// 返回: string 新资源标识, error 数据或包结构错误
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func (e *Editor) ImportMedia(ctx context.Context, kind, format string, data []byte) (string, error) {
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if kind != "Audio" && kind != "Video" || len(data) == 0 {
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return "", fmt.Errorf("nonempty Audio or Video resource required")
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}
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reader, err := e.ReaderContext(ctx)
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if err != nil {
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return "", err
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}
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working, err := reader.EditorContext(ctx)
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if err != nil {
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return "", err
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}
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if err := working.prepareSourceIDsContext(ctx); err != nil {
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return "", err
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}
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id, err := working.AddMedia(kind, format, data)
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if err != nil {
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return "", err
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}
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resource := working.resources[len(working.resources)-1]
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encoded, err := encodeOFDXMLContext(ctx, func(x *ofdXML) { x.resources(nil, []editorResource{resource}, nil) })
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if err != nil {
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return "", err
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}
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doc, err := reader.DocContext(ctx)
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if err != nil {
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return "", err
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}
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parts := map[string][]byte{resource.name: resource.data}
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name, added, err := mergePackageResources(ctx, reader, parts, doc, working.packageDirectory(), encoded)
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if err != nil {
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return "", err
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}
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entry := reader.documentRoot
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content, err := reader.readFileViewContext(ctx, entry)
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if err != nil {
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return "", err
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}
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root, err := parseEditorXMLContext(ctx, content)
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if err != nil {
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return "", err
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}
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common := root.child("CommonData")
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if common == nil || common.child("MaxUnitID") == nil {
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return "", fmt.Errorf("missing CommonData or MaxUnitID")
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}
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maximum := common.child("MaxUnitID")
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patches := []editorXMLPatch{{maximum.start, maximum.end, maximum.textXML("MaxUnitID", strconv.Itoa(working.maxID))}}
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if added {
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position := common.close
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for _, child := range common.children {
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if child.matchesOFD("TemplatePage") || child.matchesOFD("DefaultCS") {
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position = child.start
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break
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}
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}
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patches = append(patches, editorXMLPatch{position, position, common.textXML("DocumentRes", "/"+name)})
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}
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parts[entry] = editorPatchXML(content, patches)
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scan := &editorFontDocument{reader: reader, index: reader.DocumentIndex()}
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if err := scan.apply(ctx, parts); err != nil {
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return "", err
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}
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return id, e.commitResourceSnapshot(ctx, reader)
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}
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// ReplaceResource 替换当前文档图片、音视频或附件的文件，保留标识和全部使用位置
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// 图片同时清除受影响对象的旧替换图、底纹缩略图及复合预览；字体须使用EmbedFont或ExternalizeFont
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// 图片替换须满足关联蒙版与主图尺寸一致、蒙版像素为不透明黑白二值的要求
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// 入参: ctx 取消上下文, kind 资源类型, id 资源标识, format 媒体格式，图片按实际数据确定, data 完整文件
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// 返回: error 校验或提交错误，失败时文档不变
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func (e *Editor) ReplaceResource(ctx context.Context, kind, id, format string, data []byte) error {
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if !slices.Contains([]string{"Image", "Audio", "Video", "Attachment"}, kind) {
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return fmt.Errorf("use typed definition or font binding operations for %s", kind)
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}
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return e.changeResource(ctx, kind, id, func(catalog *resourceCatalog, item ResourceInfo, changes map[string][]byte) error {
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reader := catalog.scan.reader
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target := catalog.nodes[item.Kind+"/"+item.ID]
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if len(data) == 0 {
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return fmt.Errorf("empty media data")
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}
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if kind == "Image" {
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img, actual, err := baseimage.DecodePixelsContext(ctx, data)
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if err != nil {
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return err
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}
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if err := validateResourceImageMask(ctx, catalog, item.ID, img); err != nil {
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return err
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}
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format = actual
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}
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if item.Size == uint64(len(data)) && strings.EqualFold(item.Format, strings.TrimSpace(format)) {
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equal, err := packageDataEqual(ctx, reader, item.File, data)
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if err != nil || equal {
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return err
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}
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}
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name := packageAvailableName(reader, changes, path.Join(e.packageDirectory(), "Res", "Media", "Media_"+item.ID))
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changes[name] = bytes.Clone(data)
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fragment, err := editorXMLStandaloneContext(ctx, target.file.data[target.node.start:target.node.end], target.node)
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if err != nil {
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return err
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}
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root, err := parseEditorXMLContext(ctx, fragment)
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if err != nil {
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return err
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}
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file := root.child("MediaFile")
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if file == nil {
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return fmt.Errorf("missing MediaFile")
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}
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attribute, err := editorXMLAttributePatch(fragment, root, "Format", strings.ToUpper(strings.TrimSpace(format)))
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if err != nil {
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return err
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}
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fragment = editorPatchXML(fragment, []editorXMLPatch{attribute, {file.start, file.end, file.textXML("MediaFile", "/"+name)}})
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changes[target.file.name] = editorPatchXML(target.file.data, []editorXMLPatch{{target.node.start, target.node.end, fragment}})
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return nil
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}, data)
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}
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// DeleteResource 删除未被引用的资源声明，仅清理全包中可确认无引用的文件
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// 未知扩展导致引用不完整时拒绝删除；其他文档及历史版本保持不变
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// 入参: ctx 取消上下文, kind 资源类型, id 资源标识
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// 返回: error 仍有引用、结构或提交错误
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func (e *Editor) DeleteResource(ctx context.Context, kind, id string) error {
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return e.changeResource(ctx, kind, id, nil, nil)
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}
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// changeResource 校验引用后在独立快照中修改声明，借用既有版本隔离和历史提交路径
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// 入参: ctx 取消上下文, kind 资源类型, id 标识, replace 替换操作，nil表示删除, data 附件替换数据
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// 返回: error 引用、结构或提交错误
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func (e *Editor) changeResource(ctx context.Context, kind, id string, replace func(*resourceCatalog, ResourceInfo, map[string][]byte) error, data []byte) error {
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reader, err := e.ReaderContext(ctx)
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if err != nil {
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return err
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}
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catalog, err := reader.resourceCatalog(ctx)
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if err != nil {
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return err
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}
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item, err := findResource(catalog.items, kind, id)
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if err != nil {
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return err
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}
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if !item.Complete {
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return fmt.Errorf("resource references contain unsupported content")
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}
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if replace == nil && len(item.References) != 0 {
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return fmt.Errorf("resource is still referenced")
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}
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if kind == "Attachment" {
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working, err := reader.EditorContext(ctx)
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if err != nil {
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return err
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}
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revision := working.Revision()
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if replace == nil {
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err = working.DeleteAttachmentContext(ctx, item.ID)
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} else {
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err = working.ReplaceAttachmentContext(ctx, item.ID, data)
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}
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if err != nil {
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return err
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}
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if working.Revision() == revision {
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return ctx.Err()
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}
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reader, err = working.ReaderContext(ctx)
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if err != nil {
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return err
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}
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if err := pruneUnreferencedFiles(ctx, reader, item.File); err != nil {
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return err
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}
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return e.commitResourceSnapshot(ctx, reader)
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}
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target := catalog.nodes[item.Kind+"/"+item.ID]
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changes := make(map[string][]byte)
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if replace == nil {
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node := target.node
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if node.parent != nil && len(node.parent.children) == 1 {
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node = node.parent
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}
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changes[target.file.name] = editorPatchXML(target.file.data, []editorXMLPatch{{start: node.start, end: node.end}})
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} else if err := replace(catalog, item, changes); err != nil {
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return err
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}
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if len(changes) == 0 {
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return nil
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}
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if replace != nil && kind == "Image" {
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if err := invalidateResourcePreviews(ctx, catalog.scan, changes, item.ID); err != nil {
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return err
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}
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}
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if err := catalog.scan.apply(ctx, changes); err != nil {
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return err
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}
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if err := pruneUnreferencedFiles(ctx, reader, item.File); err != nil {
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return err
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}
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return e.commitResourceSnapshot(ctx, reader)
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}
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// validateResourceImageMask 校验图片替换涉及的全部蒙版引用，按文件复用尺寸和二值像素校验结果
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// 待替换资源单独校验，不影响仍使用同一原文件的其他资源声明
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// 入参: ctx 取消上下文, catalog 当前文档资源, id 替换图片标识, replacement 新图片
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// 返回: error 资源、尺寸、像素或取消错误
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func validateResourceImageMask(ctx context.Context, catalog *resourceCatalog, id string, replacement image.Image) error {
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updated := resourceImageMaskKey{replacement: true}
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keys := map[string]resourceImageMaskKey{id: updated}
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sizes := map[resourceImageMaskKey]image.Point{updated: replacement.Bounds().Size()}
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validated := make(map[resourceImageMaskKey]image.Point)
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locate := func(id string) (resourceImageMaskKey, error) {
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if key, ok := keys[id]; ok {
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return key, nil
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}
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item, err := findResource(catalog.items, "Image", id)
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if err != nil {
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return resourceImageMaskKey{}, err
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}
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key := resourceImageMaskKey{file: item.File}
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keys[id] = key
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return key, nil
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}
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for _, entry := range catalog.images {
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if err := ctx.Err(); err != nil {
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return err
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}
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source, mask := editorResourceID(entry.node.attr("ResourceID")), editorResourceID(entry.node.attr("ImageMask"))
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if mask == "" || source != id && mask != id {
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continue
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}
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sourceKey, err := locate(source)
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if err != nil {
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return err
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}
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size, ok := sizes[sourceKey]
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if !ok {
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data, err := catalog.scan.reader.readFileViewContext(ctx, sourceKey.file)
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if err != nil {
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return err
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}
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config, _, err := baseimage.DecodeConfigDataContext(ctx, data)
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if err != nil {
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return err
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}
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size = image.Pt(config.Width, config.Height)
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sizes[sourceKey] = size
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}
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maskKey, err := locate(mask)
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if err != nil {
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return err
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}
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if previous, ok := validated[maskKey]; ok {
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if previous != size {
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return fmt.Errorf("image mask %s dimensions differ from source %s", mask, source)
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}
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continue
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}
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img := replacement
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if !maskKey.replacement {
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data, err := catalog.scan.reader.readFileViewContext(ctx, maskKey.file)
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if err != nil {
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return err
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}
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img, _, err = baseimage.DecodeContext(ctx, data)
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if err != nil {
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return err
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}
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}
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if err := validateImageMask(ctx, img, size); err != nil {
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return fmt.Errorf("image object %s in %s: %w", entry.node.attr("ID"), entry.file.name, err)
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}
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sizes[maskKey] = size
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validated[maskKey] = size
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}
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return ctx.Err()
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}
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// invalidateResourcePreviews 单次解析文档结构，沿资源引用传播失效状态并移除旧替换图及底纹预览
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// 入参: ctx 取消上下文, scan 当前文档结构, changes 待提交文件, ids 资源标识
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// 返回: error 解析或取消错误
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func invalidateResourcePreviews(ctx context.Context, scan *editorFontDocument, changes map[string][]byte, ids ...string) error {
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if len(ids) == 0 {
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return ctx.Err()
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}
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reader := scan.reader
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if scan.index != reader.DocumentIndex() {
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var err error
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reader, err = reader.DocumentContext(ctx, scan.index)
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if err != nil {
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return err
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}
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}
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doc, err := reader.DocContext(ctx)
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if err != nil {
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return err
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}
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defaultCS := strconv.Itoa(doc.CommonData.DefaultCS)
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references := make(map[string][]*editorResourcePreview)
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for name, file := range scan.files {
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data, exists := changes[name]
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if !exists {
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data = file.data
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}
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root, err := parseEditorXMLContext(ctx, data)
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if err != nil {
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return err
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}
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var visit func(*editorXML, *editorResourcePreview) error
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visit = func(node *editorXML, parent *editorResourcePreview) error {
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if err := ctx.Err(); err != nil {
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return err
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}
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if !node.matchesOFD(node.name.Local) {
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return nil
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}
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current := parent
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if node.parent != nil && (node.matchesOFD("DrawParam") && node.parent.matchesOFD("DrawParams") || node.matchesOFD("CompositeGraphicUnit") && node.parent.matchesOFD("CompositeGraphicUnits")) {
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current = &editorResourcePreview{parent: parent, resource: node.attr("ID"), file: name}
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if node.matchesOFD("CompositeGraphicUnit") {
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for _, key := range []string{"Thumbnail", "Substitution"} {
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if child := node.child(key); child != nil {
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current.patches = append(current.patches, editorXMLPatch{start: child.start, end: child.end})
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}
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}
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}
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}
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if node.matchesOFD("CellContent") && node.parent != nil && node.parent.matchesOFD("Pattern") && node.hasAttr("Thumbnail") {
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patch, err := editorXMLAttributeChange(data, node, "Thumbnail", nil)
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if err != nil {
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return err
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}
|
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current = &editorResourcePreview{parent: parent, file: name, patches: []editorXMLPatch{patch}}
|
|
}
|
|
if node.matchesOFD("ImageObject") && node.hasAttr("Substitution") {
|
|
patch, err := editorXMLAttributeChange(data, node, "Substitution", nil)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
preview := &editorResourcePreview{file: name, patches: []editorXMLPatch{patch}}
|
|
for _, key := range []string{"ResourceID", "ImageMask"} {
|
|
if id := editorResourceID(node.attr(key)); id != "" {
|
|
references[id] = append(references[id], preview)
|
|
}
|
|
}
|
|
}
|
|
if current != nil {
|
|
for _, key := range []string{"ResourceID", "ImageMask", "Substitution", "DrawParam", "ColorSpace", "Font"} {
|
|
if id := editorResourceID(node.attr(key)); id != "" {
|
|
references[id] = append(references[id], current)
|
|
}
|
|
}
|
|
if resourceColorNode(node) && node.attr("ColorSpace") == "" {
|
|
references[defaultCS] = append(references[defaultCS], current)
|
|
}
|
|
if node.matchesOFD("DrawParam") {
|
|
if id := editorResourceID(node.attr("Relative")); id != "" {
|
|
references[id] = append(references[id], current)
|
|
}
|
|
}
|
|
}
|
|
for _, child := range node.children {
|
|
if err := visit(child, current); err != nil {
|
|
return err
|
|
}
|
|
}
|
|
return nil
|
|
}
|
|
if err := visit(root, nil); err != nil {
|
|
return err
|
|
}
|
|
}
|
|
affected := make(map[*editorResourcePreview]bool)
|
|
patches := make(map[string][]editorXMLPatch)
|
|
visited := make(map[string]bool)
|
|
pending := slices.Clone(ids)
|
|
for len(pending) != 0 {
|
|
if err := ctx.Err(); err != nil {
|
|
return err
|
|
}
|
|
id := editorResourceID(pending[0])
|
|
pending = pending[1:]
|
|
if id == "" || visited[id] {
|
|
continue
|
|
}
|
|
visited[id] = true
|
|
for _, preview := range references[id] {
|
|
if err := ctx.Err(); err != nil {
|
|
return err
|
|
}
|
|
for current := preview; current != nil && !affected[current]; current = current.parent {
|
|
if err := ctx.Err(); err != nil {
|
|
return err
|
|
}
|
|
affected[current] = true
|
|
if current.resource != "" {
|
|
pending = append(pending, current.resource)
|
|
}
|
|
if len(current.patches) != 0 {
|
|
patches[current.file] = append(patches[current.file], current.patches...)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
for name, edits := range patches {
|
|
if err := ctx.Err(); err != nil {
|
|
return err
|
|
}
|
|
data, exists := changes[name]
|
|
if !exists {
|
|
data = scan.files[name].data
|
|
}
|
|
changes[name] = editorPatchXML(data, edits)
|
|
}
|
|
return ctx.Err()
|
|
}
|
|
|
|
// BindMedia 追加或移除指定图元的音视频点击播放动作，保留停止、暂停等其他动作
|
|
// 已有播放动作时保留其区域和参数，重复操作不产生修改
|
|
// 入参: ctx 取消上下文, id 媒体标识, page 零基页码, object 图元标识, bind 为false时移除该媒体的点击播放动作
|
|
// 返回: error 资源、对象或提交错误
|
|
func (e *Editor) BindMedia(ctx context.Context, id string, page int, object string, bind bool) error {
|
|
kind := ""
|
|
for _, resource := range e.resources {
|
|
if media := resource.image; media != nil && sameResourceID(media.ID, id) && (media.Type == "Audio" || media.Type == "Video") {
|
|
kind, id = media.Type, media.ID
|
|
break
|
|
}
|
|
}
|
|
if kind == "" {
|
|
items, err := e.Resources(ctx)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
for _, item := range items {
|
|
if sameResourceID(item.ID, id) && (item.Kind == "Audio" || item.Kind == "Video") {
|
|
kind, id = item.Kind, item.ID
|
|
break
|
|
}
|
|
}
|
|
}
|
|
if kind == "" {
|
|
return fmt.Errorf("audio or video resource not found")
|
|
}
|
|
return e.bindResourceAction(ctx, kind, id, page, object, bind)
|
|
}
|
|
|
|
// BindAttachment 追加或移除指定图元的附件点击动作，附件标识须属于当前文档及所选版本
|
|
// 保留其他动作及已有附件动作的区域和窗口设置，重复操作不产生修改
|
|
// 入参: ctx 取消上下文, id 附件标识, page 零基页码, object 图元标识, bind 为false时移除该附件的点击动作
|
|
// 返回: error 附件、对象或提交错误
|
|
func (e *Editor) BindAttachment(ctx context.Context, id string, page int, object string, bind bool) error {
|
|
if err := ctx.Err(); err != nil {
|
|
return err
|
|
}
|
|
attachments, err := e.AttachmentsContext(ctx)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
found := false
|
|
for _, attachment := range attachments {
|
|
if err := ctx.Err(); err != nil {
|
|
return err
|
|
}
|
|
if attachment.ID == id {
|
|
if found {
|
|
return fmt.Errorf("duplicate attachment ID: %s", id)
|
|
}
|
|
found = true
|
|
}
|
|
}
|
|
if !found {
|
|
return fmt.Errorf("attachment not found: %s", id)
|
|
}
|
|
return e.bindResourceAction(ctx, "Attachment", id, page, object, bind)
|
|
}
|
|
|
|
// bindResourceAction 修改单个资源的点击动作，沿用图元编辑的版本隔离及撤销机制
|
|
// 入参: ctx 取消上下文, kind 资源类型, id 资源标识, page 零基页码, object 图元标识, bind 是否绑定
|
|
// 返回: error 对象或提交错误
|
|
func (e *Editor) bindResourceAction(ctx context.Context, kind, id string, page int, object string, bind bool) error {
|
|
if err := ctx.Err(); err != nil {
|
|
return err
|
|
}
|
|
target, err := e.Object(page, object)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
actions, err := resourceObjectActions(target)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
found := false
|
|
actions = slices.DeleteFunc(slices.Clone(actions), func(action Action) bool {
|
|
match := resourceActionMatches(action, kind, id)
|
|
found = found || match
|
|
return match && !bind
|
|
})
|
|
if bind && !found {
|
|
action := Action{Event: "CLICK"}
|
|
switch kind {
|
|
case "Attachment":
|
|
action.GotoA = &GotoA{AttachID: id}
|
|
case "Audio":
|
|
action.Sound = &Sound{ResourceID: id}
|
|
case "Video":
|
|
action.Movie = &Movie{ResourceID: id, Operator: "Play"}
|
|
}
|
|
actions = append(actions, action)
|
|
}
|
|
if err := ctx.Err(); err != nil {
|
|
return err
|
|
}
|
|
if bind == found {
|
|
return nil
|
|
}
|
|
return e.SetObjectActions(page, []string{object}, actions)
|
|
}
|
|
|
|
// resourceObjectActions 读取支持动作的图元，不复制或修改动作
|
|
// 入参: object 页面图元
|
|
// 返回: []Action 原动作, error 不支持动作的图元类型
|
|
func resourceObjectActions(object GraphicObject) ([]Action, error) {
|
|
switch object.Type {
|
|
case "TextObject":
|
|
return object.TextObject.Actions, nil
|
|
case "ImageObject":
|
|
return object.ImageObject.Actions, nil
|
|
case "Path", "PathObject":
|
|
return object.PathObject.Actions, nil
|
|
case "CompositeObject", "CompositeGraphicUnit":
|
|
return object.CompositeGraphicUnit.Actions, nil
|
|
default:
|
|
return nil, fmt.Errorf("object does not support actions")
|
|
}
|
|
}
|
|
|
|
// resourceActionMatches 检查资源的点击动作，视频停止或暂停不视为播放绑定
|
|
// 入参: action 动作, kind 资源类型, id 资源标识
|
|
// 返回: bool 是否匹配
|
|
func resourceActionMatches(action Action, kind, id string) bool {
|
|
if action.Event != "CLICK" {
|
|
return false
|
|
}
|
|
switch kind {
|
|
case "Attachment":
|
|
return action.GotoA != nil && action.GotoA.AttachID == id
|
|
case "Audio":
|
|
return action.Sound != nil && sameResourceID(action.Sound.ResourceID, id)
|
|
case "Video":
|
|
return action.Movie != nil && sameResourceID(action.Movie.ResourceID, id) && (action.Movie.Operator == "" || action.Movie.Operator == "Play")
|
|
default:
|
|
return false
|
|
}
|
|
}
|