mirror of
https://github.com/gen2brain/cbconvert
synced 2026-06-30 09:11:54 +02:00
Milan Nikolic
514 lines
10 KiB
Go
514 lines
10 KiB
Go
package main
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import (
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"context"
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"errors"
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"fmt"
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"os"
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"path/filepath"
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"slices"
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"sort"
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"strconv"
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"github.com/fvbommel/sortorder"
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"github.com/gen2brain/cbconvert"
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"github.com/gen2brain/cbconvert/cmd/cbconvert-gui/i18n"
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"github.com/gen2brain/iup-go/iup"
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)
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// selectRow focuses and selects the given 0-based row in the table.
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func selectRow(i int) {
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if i < 0 || i >= len(files) {
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return
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}
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index = i
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iup.GetHandle("Table").SetAttribute("FOCUSCELL", fmt.Sprintf("%d:1", i+1))
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}
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// onSort re-syncs the files slice to the table's displayed order after a sort.
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func onSort(ih iup.Ihandle, col int) int {
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n := len(files)
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if n < 2 {
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return iup.DEFAULT
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}
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rowKey := func(name, size string) string {
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return name + "\x00" + size
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}
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buckets := make(map[string][]int, n)
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for i, f := range files {
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size := strconv.FormatFloat(float64(f.Stat.Size())/(1024*1024), 'f', 2, 64)
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k := rowKey(f.Name, size)
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buckets[k] = append(buckets[k], i)
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}
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var selPath string
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if index >= 0 && index < len(files) {
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selPath = files[index].Path
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}
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reordered := make([]cbconvert.File, 0, n)
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for lin := 1; lin <= n; lin++ {
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k := rowKey(iup.GetAttributeId2(ih, "", lin, 1), iup.GetAttributeId2(ih, "", lin, 3))
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idxs := buckets[k]
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if len(idxs) == 0 {
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return iup.DEFAULT
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}
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reordered = append(reordered, files[idxs[0]])
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buckets[k] = idxs[1:]
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}
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files = reordered
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index = -1
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if selPath != "" {
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for i, f := range files {
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if f.Path == selPath {
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selectRow(i)
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break
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}
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}
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}
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return iup.DEFAULT
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}
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// addFiles appends files, natural-sorts the list, and rebuilds the table.
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func addFiles(fs []cbconvert.File) {
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if len(fs) == 0 {
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return
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}
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wasEmpty := len(files) == 0
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var selPath string
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if index >= 0 && index < len(files) {
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selPath = files[index].Path
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}
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files = append(files, fs...)
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sort.Slice(files, func(i, j int) bool {
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return sortorder.NaturalLess(files[i].Name, files[j].Name)
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})
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t := iup.GetHandle("Table")
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t.SetAttribute("NUMLIN", strconv.Itoa(len(files)))
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for i, f := range files {
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lin := i + 1
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iup.SetAttributeId2(t, "", lin, 1, f.Name)
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iup.SetAttributeId2(t, "", lin, 2, cbconvert.FileType(f.Path))
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iup.SetAttributeId2(t, "", lin, 3, strconv.FormatFloat(float64(f.Stat.Size())/(1024*1024), 'f', 2, 64))
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}
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if wasEmpty {
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selectRow(0)
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setActive()
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previewPost()
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return
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}
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index = -1
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for i, f := range files {
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if f.Path == selPath {
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selectRow(i)
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break
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}
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}
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setActive()
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}
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func previewPost() {
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if index == -1 || len(files) == 0 {
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return
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}
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file := files[index]
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// On a new file, fetch the count first; the Page POSTMESSAGE handler clamps previewPage and renders.
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if file.Path != previewPath {
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previewPath = file.Path
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iup.GetHandle("Loading").SetAttributes("VISIBLE=YES, START=YES")
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go pageCountPost(file)
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return
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}
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previewRender()
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}
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// previewRenderSize is the size the cover is rendered at.
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const previewRenderSize = 1200
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// previewRender renders the current file at previewPage off the UI thread.
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func previewRender() {
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if index == -1 || len(files) == 0 {
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return
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}
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file := files[index]
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iup.GetHandle("Loading").SetAttributes("VISIBLE=YES, START=YES")
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opts := options()
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page := previewPage
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go func(opts cbconvert.Options) {
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conv := cbconvert.New(opts)
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var s string
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img, err := conv.PreviewPage(file.Path, file.Stat, page, previewRenderSize, previewRenderSize)
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if err != nil {
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s = err.Error()
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fmt.Println(err)
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}
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iup.PostMessage(iup.GetHandle("Preview"), s, page, img)
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}(opts)
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}
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// pageCountPost computes the file's page count off the UI thread and posts it, tagged with the path, to the Page spin.
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func pageCountPost(file cbconvert.File) {
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n, err := cbconvert.New(cbconvert.NewOptions()).PageCount(file.Path, file.Stat)
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if err != nil || n < 1 {
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n = 1
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}
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iup.PostMessage(iup.GetHandle("Page"), file.Path, n, nil)
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}
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// onPageChanged re-renders the preview for the spin's page; dedupes so spin and typing don't both fire.
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func onPageChanged() int {
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page := iup.GetHandle("Page").GetInt("VALUE") - 1
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if page < 0 {
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page = 0
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}
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if page == previewPage {
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return iup.DEFAULT
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}
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previewPage = page
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previewRender()
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return iup.DEFAULT
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}
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func onAddFiles(ih iup.Ihandle) int {
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args, err := fileDlg(i18n.Lng(i18n.DlgAddFiles), true, false, inputDirKey)
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if err != nil {
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iup.PostMessage(iup.GetHandle("dlg"), err.Error(), 0, 0)
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fmt.Println(err)
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return iup.DEFAULT
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}
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if len(args) > 0 {
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conv := cbconvert.New(options())
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fs, err := conv.Files(args)
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if err != nil {
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iup.PostMessage(iup.GetHandle("dlg"), err.Error(), 0, 0)
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fmt.Println(err)
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return iup.DEFAULT
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}
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addFiles(fs)
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}
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return iup.DEFAULT
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}
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func onAddDir(ih iup.Ihandle) int {
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args, err := fileDlg(i18n.Lng(i18n.DlgAddDir), false, true, inputDirKey)
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if err != nil {
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iup.PostMessage(iup.GetHandle("dlg"), err.Error(), 0, 0)
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fmt.Println(err)
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return iup.DEFAULT
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}
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if len(args) > 0 {
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conv := cbconvert.New(options())
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fs, err := conv.Files(args)
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if err != nil {
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iup.PostMessage(iup.GetHandle("dlg"), err.Error(), 0, 0)
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fmt.Println(err)
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return iup.DEFAULT
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}
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addFiles(fs)
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}
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return iup.DEFAULT
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}
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func onRemove(ih iup.Ihandle) int {
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if index < 0 || index >= len(files) {
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return iup.IGNORE
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}
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iup.GetHandle("Table").SetAttribute("DELLIN", strconv.Itoa(index+1))
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files = slices.Delete(files, index, index+1)
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if index >= len(files) {
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index = len(files) - 1
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}
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setActive()
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if len(files) == 0 {
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clearPreview()
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} else {
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previewPost()
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}
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return iup.DEFAULT
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}
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// clearPreview resets the preview state and repaints the canvas to its empty state.
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func clearPreview() {
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iup.Destroy(iup.GetHandle("cover"))
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hasCover = false
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previewPath = ""
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previewPage = 0
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iup.GetHandle("PreviewInfo").SetAttribute("TITLE", "")
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iup.Update(iup.GetHandle("Preview"))
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}
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func onRemoveAll(ih iup.Ihandle) int {
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index = -1
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files = make([]cbconvert.File, 0)
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iup.GetHandle("Table").SetAttribute("NUMLIN", "0")
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clearPreview()
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setActive()
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return iup.DEFAULT
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}
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func onThumbnail(ih iup.Ihandle) int {
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conv := cbconvert.New(options())
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conv.Nfiles = len(files)
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activeConv = conv
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setBusy(true)
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conv.OnProgress = func() {
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iup.PostMessage(iup.GetHandle("ProgressBar"), "progress2", 0, conv)
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}
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var canceled = false
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conv.OnCancel = func() {
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canceled = true
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}
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iup.GetHandle("dlg").SetCallback("K_ANY", iup.KAnyFunc(func(ih iup.Ihandle, c int) int {
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if c == iup.K_ESC {
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conv.Cancel()
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}
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return iup.DEFAULT
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}))
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iup.PostMessage(iup.GetHandle("ProgressBar"), "start", 0, conv)
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go func(c *cbconvert.Converter) {
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for _, file := range files {
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if canceled {
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break
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}
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if err := c.Thumbnail(file); err != nil {
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iup.PostMessage(iup.GetHandle("dlg"), err.Error(), 0, 0)
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fmt.Println(err)
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continue
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}
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}
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iup.PostMessage(iup.GetHandle("ProgressBar"), "finish", 0, 0)
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}(conv)
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return iup.DEFAULT
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}
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func onCover(ih iup.Ihandle) int {
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conv := cbconvert.New(options())
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conv.Nfiles = len(files)
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activeConv = conv
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setBusy(true)
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conv.OnProgress = func() {
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iup.PostMessage(iup.GetHandle("ProgressBar"), "progress2", 0, conv)
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}
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var canceled = false
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conv.OnCancel = func() {
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canceled = true
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}
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iup.GetHandle("dlg").SetCallback("K_ANY", iup.KAnyFunc(func(ih iup.Ihandle, c int) int {
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if c == iup.K_ESC {
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conv.Cancel()
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}
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return iup.DEFAULT
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}))
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iup.PostMessage(iup.GetHandle("ProgressBar"), "start", 0, conv)
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go func(c *cbconvert.Converter) {
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for _, file := range files {
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if canceled {
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break
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}
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if err := c.Cover(file); err != nil {
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iup.PostMessage(iup.GetHandle("dlg"), err.Error(), 0, 0)
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fmt.Println(err)
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continue
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}
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}
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iup.PostMessage(iup.GetHandle("ProgressBar"), "finish", 0, 0)
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}(conv)
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return iup.DEFAULT
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}
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func onConvert(ih iup.Ihandle) int {
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if busy {
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if activeConv != nil {
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activeConv.Cancel()
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}
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return iup.DEFAULT
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}
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conv := cbconvert.New(options())
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conv.Nfiles = len(files)
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activeConv = conv
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setBusy(true)
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conv.OnStart = func() {
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iup.PostMessage(iup.GetHandle("ProgressBar"), "convert", 0, conv)
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}
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conv.OnProgress = func() {
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iup.PostMessage(iup.GetHandle("ProgressBar"), "progress", 0, conv)
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}
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iup.GetHandle("dlg").SetCallback("K_ANY", iup.KAnyFunc(func(ih iup.Ihandle, c int) int {
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if c == iup.K_ESC {
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conv.Cancel()
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}
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return iup.DEFAULT
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})).SetCallback("CLOSE_CB", iup.CloseFunc(func(ih iup.Ihandle) int {
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if err := os.RemoveAll(conv.Workdir); err != nil {
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fmt.Println(err)
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}
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return iup.DEFAULT
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}))
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convertErr := func(err error) {
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if errors.Is(err, context.Canceled) {
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if err := os.RemoveAll(conv.Workdir); err != nil {
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fmt.Println(err)
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}
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return
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}
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iup.PostMessage(iup.GetHandle("dlg"), err.Error(), 0, 0)
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fmt.Println(err)
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if err := os.RemoveAll(conv.Workdir); err != nil {
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fmt.Println(err)
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}
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}
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go func(c *cbconvert.Converter) {
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if c.Opts.Combine {
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if err := c.Combine(files); err != nil {
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convertErr(err)
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}
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} else {
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for _, file := range files {
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if err := c.Convert(file); err != nil {
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convertErr(err)
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if errors.Is(err, context.Canceled) {
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break
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}
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continue
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}
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}
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}
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iup.PostMessage(iup.GetHandle("ProgressBar"), "finish", 0, 0)
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}(conv)
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return iup.DEFAULT
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}
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func onOutputDirectory(ih iup.Ihandle) int {
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args, err := fileDlg(i18n.Lng(i18n.DlgOutputDir), false, true, outputDirKey)
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if err != nil {
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iup.PostMessage(iup.GetHandle("dlg"), err.Error(), 0, 0)
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fmt.Println(err)
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return iup.DEFAULT
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}
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if len(args) == 1 {
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iup.GetHandle("OutDir").SetAttribute("VALUE", args[0])
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}
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setActive()
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return iup.DEFAULT
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}
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func onOutputFile(ih iup.Ihandle) int {
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name := saveDlg(i18n.Lng(i18n.DlgOutputFile), outputDirKey)
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if name != "" {
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iup.GetHandle("OutFile").SetAttribute("VALUE", filepath.Base(name))
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iup.GetHandle("OutDir").SetAttribute("VALUE", filepath.Dir(name))
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setActive()
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}
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return iup.DEFAULT
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}
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func onFilterChanged(ih iup.Ihandle) int {
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switch ih.GetInt("VALUE") {
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case 1:
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ih.SetAttribute("TIP", i18n.Lng(i18n.FilterNearest))
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case 2:
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ih.SetAttribute("TIP", i18n.Lng(i18n.FilterBox))
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case 3:
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ih.SetAttribute("TIP", i18n.Lng(i18n.FilterLinear))
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case 4:
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ih.SetAttribute("TIP", i18n.Lng(i18n.FilterMitchell))
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case 5:
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ih.SetAttribute("TIP", i18n.Lng(i18n.FilterCatmull))
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case 6:
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ih.SetAttribute("TIP", i18n.Lng(i18n.FilterGaussian))
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case 7:
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ih.SetAttribute("TIP", i18n.Lng(i18n.FilterLanczos))
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}
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previewPost()
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return iup.DEFAULT
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}
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