mirrors/pdf.js
1
0
Fork 0
mirror of https://github.com/mozilla/pdf.js.git synced 2025-04-25 09:38:06 +02:00
Code Activity

Button widget annotations: implement support for pushbuttons

Browse source
This commit is contained in:
Tim van der Meij 2017-11-20 23:00:19 +01:00
parent 6f52fafdc0
commit 0fe80df2a7
No known key found for this signature in database
GPG key ID: 8C3FD2925A5F2762
6 changed files with 100 additions and 39 deletions
Download patch file Download diff file Expand all files Collapse all files

91
src/core/annotation.js
View file

@ -732,45 +732,70 @@ class ButtonWidgetAnnotation extends WidgetAnnotation {
this.data.checkBox = !this.hasFieldFlag(AnnotationFieldFlag.RADIO) &&
!this.hasFieldFlag(AnnotationFieldFlag.PUSHBUTTON);
if (this.data.checkBox) {
if (!isName(this.data.fieldValue)) {
return;
}
this.data.fieldValue = this.data.fieldValue.name;
}
this.data.radioButton = this.hasFieldFlag(AnnotationFieldFlag.RADIO) &&
!this.hasFieldFlag(AnnotationFieldFlag.PUSHBUTTON);
if (this.data.radioButton) {
this.data.fieldValue = this.data.buttonValue = null;
this.data.pushButton = this.hasFieldFlag(AnnotationFieldFlag.PUSHBUTTON);
// The parent field's `V` entry holds a `Name` object with the appearance
// state of whichever child field is currently in the "on" state.
let fieldParent = params.dict.get('Parent');
if (isDict(fieldParent) && fieldParent.has('V')) {
let fieldParentValue = fieldParent.get('V');
if (isName(fieldParentValue)) {
this.data.fieldValue = fieldParentValue.name;
}
}
if (this.data.checkBox) {
this._processCheckBox();
} else if (this.data.radioButton) {
this._processRadioButton(params);
} else if (this.data.pushButton) {
this._processPushButton(params);
} else {
warn('Invalid field flags for button widget annotation');
}
}
// The button's value corresponds to its appearance state.
let appearanceStates = params.dict.get('AP');
if (!isDict(appearanceStates)) {
return;
}
let normalAppearanceState = appearanceStates.get('N');
if (!isDict(normalAppearanceState)) {
return;
}
let keys = normalAppearanceState.getKeys();
for (let i = 0, ii = keys.length; i < ii; i++) {
if (keys[i] !== 'Off') {
this.data.buttonValue = keys[i];
break;
}
_processCheckBox() {
if (!isName(this.data.fieldValue)) {
return;
}
this.data.fieldValue = this.data.fieldValue.name;
}
_processRadioButton(params) {
this.data.fieldValue = this.data.buttonValue = null;
// The parent field's `V` entry holds a `Name` object with the appearance
// state of whichever child field is currently in the "on" state.
let fieldParent = params.dict.get('Parent');
if (isDict(fieldParent) && fieldParent.has('V')) {
let fieldParentValue = fieldParent.get('V');
if (isName(fieldParentValue)) {
this.data.fieldValue = fieldParentValue.name;
}
}
// The button's value corresponds to its appearance state.
let appearanceStates = params.dict.get('AP');
if (!isDict(appearanceStates)) {
return;
}
let normalAppearanceState = appearanceStates.get('N');
if (!isDict(normalAppearanceState)) {
return;
}
let keys = normalAppearanceState.getKeys();
for (let i = 0, ii = keys.length; i < ii; i++) {
if (keys[i] !== 'Off') {
this.data.buttonValue = keys[i];
break;
}
}
}
_processPushButton(params) {
if (!params.dict.has('A')) {
warn('Push buttons without action dictionaries are not supported');
return;
}
Catalog.parseDestDictionary({
destDict: params.dict,
resultObj: this.data,
docBaseUrl: params.pdfManager.docBaseUrl,
});
}
}