mirror of
https://github.com/xiaoqidun/ofdgo.git
synced 2026-10-29 15:06:46 +08:00
116 lines
3.4 KiB
Go
116 lines
3.4 KiB
Go
// Copyright 2025-2026 肖其顿 (XIAO QI DUN)
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
package ofdgo
|
|
|
|
// RenderPage 编译页面为与绘图库无关的只读绘制数据
|
|
// 入参: page 页面内容
|
|
// 返回: *RasterPage 绘制页面, error 错误信息
|
|
func (r *Renderer) RenderPage(page *PageContent) (*RasterPage, error) {
|
|
return r.CompilePage(page)
|
|
}
|
|
|
|
// GetPageBox 获取页面物理区域
|
|
// 入参: page 页面内容
|
|
// 返回: Box 区域, error 错误信息
|
|
func (r *Renderer) GetPageBox(page *PageContent) (Box, error) {
|
|
area, err := r.Reader.resolvePageArea(page.Area, page.Template)
|
|
if err != nil {
|
|
return Box{}, err
|
|
}
|
|
boxStr := area.PhysicalBox
|
|
if boxStr == "" {
|
|
boxStr = area.ApplicationBox
|
|
}
|
|
if boxStr == "" {
|
|
boxStr = area.ContentBox
|
|
}
|
|
if boxStr == "" {
|
|
boxStr = "0 0 210 297"
|
|
}
|
|
return ParseBox(boxStr)
|
|
}
|
|
|
|
// 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
|
|
// 入参: page 页面内容
|
|
// 返回: []PageLink 页面链接, error 错误信息
|
|
func (r *Renderer) PageLinks(page *PageContent) ([]PageLink, error) {
|
|
box, err := r.GetPageBox(page)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
sources := r.pageActionSources(page, box)
|
|
if r.RenderAnnotations {
|
|
sources = append(sources, r.annotationActionSources(r.Reader.Annots[page.ID])...)
|
|
}
|
|
var links []PageLink
|
|
var bookmarks map[string]Dest
|
|
for sourceIndex, source := range sources {
|
|
start := len(links)
|
|
for _, action := range source.Actions {
|
|
if action.Event != "CLICK" {
|
|
continue
|
|
}
|
|
box, path, err := r.actionLinkRegion(source, action)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
if box.W <= 0 || box.H <= 0 {
|
|
continue
|
|
}
|
|
link := PageLink{Box: box, Path: path}
|
|
if action.Goto != nil {
|
|
if bookmarks == nil {
|
|
doc, err := r.Reader.Doc()
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
bookmarks = make(map[string]Dest, len(doc.Bookmarks.Bookmark))
|
|
for _, bookmark := range doc.Bookmarks.Bookmark {
|
|
bookmarks[bookmark.Name] = bookmark.Dest
|
|
}
|
|
}
|
|
if dest := gotoDest(action.Goto, bookmarks); dest != nil {
|
|
value := *dest
|
|
link.Dest = &value
|
|
links = append(links, link)
|
|
}
|
|
} else if action.URI != nil && action.URI.URI != "" {
|
|
link.URI = resolveActionURI(*action.URI)
|
|
links = append(links, link)
|
|
} else if action.GotoA != nil {
|
|
link.Attachment = action.GotoA.AttachID
|
|
links = append(links, link)
|
|
}
|
|
}
|
|
if len(links)-start > 1 {
|
|
for i := start; i < len(links); i++ {
|
|
links[i].Group = sourceIndex + 1
|
|
}
|
|
}
|
|
}
|
|
return links, nil
|
|
}
|
|
|
|
// RenderPageByIndex 按索引渲染页面
|
|
// 入参: index 页面索引，从0开始
|
|
// 返回: *RasterPage 绘制页面, error 错误信息
|
|
func (r *Renderer) RenderPageByIndex(index int) (*RasterPage, error) {
|
|
page, err := r.Reader.PageContentByIndex(index)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return r.RenderPage(page)
|
|
}
|