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feat(创建编辑): WebUI新增OFD创建与可视化编辑功能
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xiaoqidun committed 2026-09-15 14:24:19 +08:00
1 parent dcf1ae8b3a
commit aec10e93a4
13 files changed
+1669 -317
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ofdgo_editor.go
+89 -26
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@@ -23,6 +23,7 @@ import (
"fmt"
"image"
"math"
"reflect"
"slices"
"strconv"
"strings"
@@ -35,13 +36,18 @@ import (
// Editor 新建OFD文档，长度单位为毫米，页面索引从0开始，实例需串行使用
// Info可修改文档元数据，通过方法管理页面、对象和资源，不修改已有OFD文件
type Editor struct {
Info DocInfo
pages []PageContent
resources []editorResource
fonts map[string]*font.SFNT
images map[string]bool
resourceID map[editorResourceKey]string
maxID int
Info DocInfo
pages []PageContent
resources []editorResource
fonts map[string]*font.SFNT
images map[string]bool
resourceID map[editorResourceKey]string
maxID int
history []editorChange
historyIndex int
historyLimit int
revision uint64
serial uint64
}
// editorResource 文档内嵌资源
@@ -124,7 +130,9 @@ func (e *Editor) AddPage(width, height float64) (int, error) {
Area: PageArea{PhysicalBox: fmt.Sprintf("0 0 %s %s", ofdNumber(width), ofdNumber(height))},
Content: Content{Layer: []Layer{{ID: e.nextID(), Type: "Body"}}},
})
return len(e.pages) - 1, nil
index := len(e.pages) - 1
e.recordPageAddition(index)
return index, nil
}
// CopyPage 复制页面并追加到文档末尾，分配新标识，复用字体和图片资源
@@ -164,16 +172,24 @@ func (e *Editor) CopyPage(index int) (int, error) {
}
}
e.pages = append(e.pages, page)
return len(e.pages) - 1, nil
index = len(e.pages) - 1
e.recordPageAddition(index)
return index, nil
}
// DeletePage 删除页面，不回收资源或复用标识，删除后页面索引随之变化
// 入参: index 页面索引
// 返回: error 错误信息
func (e *Editor) DeletePage(index int) error {
if _, err := e.page(index); err != nil {
page, err := e.page(index)
if err != nil {
return err
}
if change := e.recordChange(); change != nil {
saved := copyEditorPage(*page)
change.undo = func(e *Editor) { e.pages = slices.Insert(e.pages, index, copyEditorPage(saved)) }
change.redo = func(e *Editor) { e.pages = slices.Delete(e.pages, index, index+1) }
}
e.pages = slices.Delete(e.pages, index, index+1)
return nil
}
@@ -188,13 +204,14 @@ func (e *Editor) MovePage(from, to int) error {
if _, err := e.page(to); err != nil {
return err
}
page := e.pages[from]
if from < to {
copy(e.pages[from:to], e.pages[from+1:to+1])
} else {
copy(e.pages[to+1:from+1], e.pages[to:from])
if from == to {
return nil
}
moveEditorItem(e.pages, from, to)
if change := e.recordChange(); change != nil {
change.undo = func(e *Editor) { moveEditorItem(e.pages, to, from) }
change.redo = func(e *Editor) { moveEditorItem(e.pages, from, to) }
}
e.pages[to] = page
return nil
}
@@ -209,7 +226,15 @@ func (e *Editor) ResizePage(index int, width, height float64) error {
if !finite(width) || !finite(height) || width <= 0 || height <= 0 {
return fmt.Errorf("page dimensions must be finite and positive")
}
page.Area.PhysicalBox = fmt.Sprintf("0 0 %s %s", ofdNumber(width), ofdNumber(height))
before, after := page.Area.PhysicalBox, fmt.Sprintf("0 0 %s %s", ofdNumber(width), ofdNumber(height))
if before == after {
return nil
}
page.Area.PhysicalBox = after
if change := e.recordChange(); change != nil {
change.undo = func(e *Editor) { e.pages[index].Area.PhysicalBox = before }
change.redo = func(e *Editor) { e.pages[index].Area.PhysicalBox = after }
}
return nil
}
@@ -337,6 +362,17 @@ func (e *Editor) AddObject(page int, object GraphicObject) (string, error) {
}
e.maxID++
content.Content.Layer[0].Objects = append(content.Content.Layer[0].Objects, object)
if change := e.recordChange(); change != nil {
index := len(content.Content.Layer[0].Objects) - 1
change.undo = func(e *Editor) {
layer := &e.pages[page].Content.Layer[0]
layer.Objects = slices.Delete(layer.Objects, index, index+1)
}
change.redo = func(e *Editor) {
layer := &e.pages[page].Content.Layer[0]
layer.Objects = slices.Insert(layer.Objects, index, object)
}
}
return id, nil
}
@@ -355,7 +391,7 @@ func (e *Editor) Object(page int, id string) (GraphicObject, error) {
// 入参: page 页面索引, id 对象标识, object 新内容，忽略其ID且不引用调用方的可变数据
// 返回: error 错误信息
func (e *Editor) UpdateObject(page int, id string, object GraphicObject) error {
layer, index, err := e.findObject(page, id)
_, index, err := e.findObject(page, id)
if err != nil {
return err
}
@@ -363,7 +399,7 @@ func (e *Editor) UpdateObject(page int, id string, object GraphicObject) error {
if err != nil {
return err
}
layer.Objects[index] = object
e.replaceObject(page, index, object)
return nil
}
@@ -375,6 +411,17 @@ func (e *Editor) DeleteObject(page int, id string) error {
if err != nil {
return err
}
if change := e.recordChange(); change != nil {
object := layer.Objects[index]
change.undo = func(e *Editor) {
layer := &e.pages[page].Content.Layer[0]
layer.Objects = slices.Insert(layer.Objects, index, object)
}
change.redo = func(e *Editor) {
layer := &e.pages[page].Content.Layer[0]
layer.Objects = slices.Delete(layer.Objects, index, index+1)
}
}
layer.Objects = slices.Delete(layer.Objects, index, index+1)
return nil
}
@@ -390,16 +437,32 @@ func (e *Editor) MoveObject(page int, id string, to int) error {
if to < 0 || to >= len(layer.Objects) {
return fmt.Errorf("object index %d out of range", to)
}
object := layer.Objects[from]
if from < to {
copy(layer.Objects[from:to], layer.Objects[from+1:to+1])
} else {
copy(layer.Objects[to+1:from+1], layer.Objects[to:from])
if from == to {
return nil
}
moveEditorItem(layer.Objects, from, to)
if change := e.recordChange(); change != nil {
change.undo = func(e *Editor) { moveEditorItem(e.pages[page].Content.Layer[0].Objects, to, from) }
change.redo = func(e *Editor) { moveEditorItem(e.pages[page].Content.Layer[0].Objects, from, to) }
}
layer.Objects[to] = object
return nil
}
// replaceObject 提交已校验的对象并记录前后内容
// 入参: page 页面索引, index 对象索引, object 新内容
func (e *Editor) replaceObject(page, index int, object GraphicObject) {
layer := &e.pages[page].Content.Layer[0]
before := layer.Objects[index]
if reflect.DeepEqual(before, object) {
return
}
layer.Objects[index] = object
if change := e.recordChange(); change != nil {
change.undo = func(e *Editor) { e.pages[page].Content.Layer[0].Objects[index] = before }
change.redo = func(e *Editor) { e.pages[page].Content.Layer[0].Objects[index] = object }
}
}
// findObject 查找正文图层中的对象
// 入参: page 页面索引, id 对象标识
// 返回: *Layer 所属图层, int 对象索引, error 错误信息
@@ -585,7 +648,7 @@ func (e *Editor) UpdateText(page int, id, value, fontID string, size float64) er
if err != nil {
return err
}
layer.Objects[index] = object
e.replaceObject(page, index, object)
return nil
}