rui_orig/svgImageView.go

190 lines
4.7 KiB
Go

package rui
import (
"io"
"net/http"
"os"
"strings"
)
// SvgImageView represents an SvgImageView view
type SvgImageView interface {
View
}
type svgImageViewData struct {
viewData
}
// NewSvgImageView create new SvgImageView object and return it
func NewSvgImageView(session Session, params Params) SvgImageView {
view := new(svgImageViewData)
view.init(session)
setInitParams(view, params)
return view
}
func newSvgImageView(session Session) View {
return NewSvgImageView(session, nil)
}
// Init initialize fields of imageView by default values
func (imageView *svgImageViewData) init(session Session) {
imageView.viewData.init(session)
imageView.tag = "SvgImageView"
imageView.systemClass = "ruiSvgImageView"
}
func (imageView *svgImageViewData) String() string {
return getViewString(imageView, nil)
}
func (imageView *svgImageViewData) normalizeTag(tag string) string {
tag = strings.ToLower(tag)
switch tag {
case Source, "source":
tag = Content
case VerticalAlign:
tag = CellVerticalAlign
case HorizontalAlign:
tag = CellHorizontalAlign
}
return tag
}
func (imageView *svgImageViewData) Remove(tag string) {
imageView.remove(imageView.normalizeTag(tag))
}
func (imageView *svgImageViewData) remove(tag string) {
imageView.viewData.remove(tag)
if imageView.created {
switch tag {
case Content:
updateInnerHTML(imageView.htmlID(), imageView.session)
}
}
}
func (imageView *svgImageViewData) Set(tag string, value any) bool {
return imageView.set(imageView.normalizeTag(tag), value)
}
func (imageView *svgImageViewData) set(tag string, value any) bool {
if value == nil {
imageView.remove(tag)
return true
}
switch tag {
case Content:
if text, ok := value.(string); ok {
imageView.properties[Content] = text
if imageView.created {
updateInnerHTML(imageView.htmlID(), imageView.session)
}
imageView.propertyChangedEvent(Content)
return true
}
notCompatibleType(Source, value)
return false
default:
return imageView.viewData.set(tag, value)
}
}
func (imageView *svgImageViewData) Get(tag string) any {
return imageView.viewData.get(imageView.normalizeTag(tag))
}
func (imageView *svgImageViewData) htmlTag() string {
return "div"
}
func (imageView *svgImageViewData) writeSvg(data []byte, buffer *strings.Builder) {
text := string(data)
index := strings.Index(text, "<svg")
if index > 0 {
text = text[index:]
}
index = strings.Index(text, "\n")
for index >= 0 {
if index > 0 && text[index-1] == '\r' {
buffer.WriteString(text[:index-1])
} else {
buffer.WriteString(text[:index])
}
end := len(text)
index++
for index < end && (text[index] == ' ' || text[index] == '\t' || text[index] == '\r' || text[index] == '\n') {
index++
}
text = text[index:]
index = strings.Index(text, "\n")
}
buffer.WriteString(text)
}
func (imageView *svgImageViewData) htmlSubviews(self View, buffer *strings.Builder) {
if value := imageView.getRaw(Content); value != nil {
if content, ok := value.(string); ok && content != "" {
if strings.HasPrefix(content, "@") {
if name, ok := imageView.session.ImageConstant(content[1:]); ok {
content = name
}
}
if image, ok := resources.images[content]; ok {
if image.fs != nil {
if data, err := image.fs.ReadFile(image.path); err == nil {
imageView.writeSvg(data, buffer)
return
} else {
DebugLog(err.Error())
}
} else if data, err := os.ReadFile(image.path); err == nil {
imageView.writeSvg(data, buffer)
return
} else {
DebugLog(err.Error())
}
}
if strings.HasPrefix(content, "http://") || strings.HasPrefix(content, "https://") {
resp, err := http.Get(content)
if err == nil {
defer resp.Body.Close()
if body, err := io.ReadAll(resp.Body); err == nil {
imageView.writeSvg(body, buffer)
return
}
}
DebugLog(err.Error())
}
buffer.WriteString(content)
}
}
}
// GetSvgImageViewVerticalAlign return the vertical align of an SvgImageView subview: TopAlign (0), BottomAlign (1), CenterAlign (2)
// If the second argument (subviewID) is not specified or it is "" then a left position of the first argument (view) is returned
func GetSvgImageViewVerticalAlign(view View, subviewID ...string) int {
return enumStyledProperty(view, subviewID, CellVerticalAlign, LeftAlign, false)
}
// GetSvgImageViewHorizontalAlign return the vertical align of an SvgImageView subview: LeftAlign (0), RightAlign (1), CenterAlign (2)
// If the second argument (subviewID) is not specified or it is "" then a left position of the first argument (view) is returned
func GetSvgImageViewHorizontalAlign(view View, subviewID ...string) int {
return enumStyledProperty(view, subviewID, CellHorizontalAlign, LeftAlign, false)
}