mirror of
https://github.com/xiaoqidun/ofdgo.git
synced 2026-10-29 16:59:27 +08:00
116 lines
3.4 KiB
Go
116 lines
3.4 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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// RenderPage 编译页面为与绘图库无关的只读绘制数据
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// 入参: page 页面内容
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// 返回: *RasterPage 绘制页面, error 错误信息
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func (r *Renderer) RenderPage(page *PageContent) (*RasterPage, error) {
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return r.CompilePage(page)
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}
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// GetPageBox 获取页面物理区域
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// 入参: page 页面内容
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// 返回: Box 区域, error 错误信息
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func (r *Renderer) GetPageBox(page *PageContent) (Box, error) {
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area, err := r.Reader.resolvePageArea(page.Area, page.Template)
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if err != nil {
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return Box{}, err
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}
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boxStr := area.PhysicalBox
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if boxStr == "" {
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boxStr = area.ApplicationBox
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}
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if boxStr == "" {
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boxStr = area.ContentBox
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}
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if boxStr == "" {
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boxStr = "0 0 210 297"
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}
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return ParseBox(boxStr)
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}
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// PageLinks 获取页面、模板和可见注释的点击链接，包含复杂区域、组合图元和附件动作
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// 入参: page 页面内容
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// 返回: []PageLink 页面链接, error 错误信息
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func (r *Renderer) PageLinks(page *PageContent) ([]PageLink, error) {
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box, err := r.GetPageBox(page)
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if err != nil {
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return nil, err
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}
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sources := r.pageActionSources(page, box)
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if r.RenderAnnotations {
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sources = append(sources, r.annotationActionSources(r.Reader.Annots[page.ID])...)
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}
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var links []PageLink
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var bookmarks map[string]Dest
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for sourceIndex, source := range sources {
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start := len(links)
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for _, action := range source.Actions {
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if action.Event != "CLICK" {
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continue
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}
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box, path, err := r.actionLinkRegion(source, action)
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if err != nil {
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return nil, err
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}
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if box.W <= 0 || box.H <= 0 {
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continue
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}
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link := PageLink{Box: box, Path: path}
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if action.Goto != nil {
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if bookmarks == nil {
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doc, err := r.Reader.Doc()
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if err != nil {
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return nil, err
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}
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bookmarks = make(map[string]Dest, len(doc.Bookmarks.Bookmark))
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for _, bookmark := range doc.Bookmarks.Bookmark {
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bookmarks[bookmark.Name] = bookmark.Dest
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}
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}
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if dest := gotoDest(action.Goto, bookmarks); dest != nil {
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value := *dest
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link.Dest = &value
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links = append(links, link)
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}
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} else if action.URI != nil && action.URI.URI != "" {
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link.URI = resolveActionURI(*action.URI)
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links = append(links, link)
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} else if action.GotoA != nil {
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link.Attachment = action.GotoA.AttachID
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links = append(links, link)
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}
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}
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if len(links)-start > 1 {
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for i := start; i < len(links); i++ {
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links[i].Group = sourceIndex + 1
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}
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}
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}
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return links, nil
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}
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// RenderPageByIndex 按索引渲染页面
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// 入参: index 页面索引，从0开始
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// 返回: *RasterPage 绘制页面, error 错误信息
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func (r *Renderer) RenderPageByIndex(index int) (*RasterPage, error) {
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page, err := r.Reader.PageContentByIndex(index)
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if err != nil {
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return nil, err
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}
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return r.RenderPage(page)
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}
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