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authortoasted-nutbread <toasted-nutbread@users.noreply.github.com>2019-02-10 20:44:16 -0500
committertoasted-nutbread <toasted-nutbread@users.noreply.github.com>2019-02-10 20:44:16 -0500
commit01f611d1898f046de2f367e8fe0ec6692ca7e445 (patch)
tree879d85c415d62bdb0a9aa1945c57489e34e64fd7 /ext/fg/js
parent7ac7f55436b42ccc55feee70d16f59fdde907324 (diff)
Add support for touch input
Diffstat (limited to 'ext/fg/js')
-rw-r--r--ext/fg/js/frontend.js203
1 files changed, 201 insertions, 2 deletions
diff --git a/ext/fg/js/frontend.js b/ext/fg/js/frontend.js
index 266f9640..001ffc79 100644
--- a/ext/fg/js/frontend.js
+++ b/ext/fg/js/frontend.js
@@ -26,6 +26,14 @@ class Frontend {
this.textSourceLast = null;
this.pendingLookup = false;
this.options = null;
+
+ this.primaryTouchIdentifier = null;
+ this.contextMenuChecking = false;
+ this.contextMenuPrevent = false;
+ this.contextMenuPreviousRange = null;
+ this.mouseDownPrevent = false;
+ this.clickPrevent = false;
+ this.scrollPrevent = false;
}
async prepare() {
@@ -39,6 +47,15 @@ class Frontend {
window.addEventListener('mouseup', this.onMouseUp.bind(this));
window.addEventListener('resize', this.onResize.bind(this));
+ if (this.options.scanning.touchInputEnabled) {
+ window.addEventListener('click', this.onClick.bind(this));
+ window.addEventListener('touchstart', this.onTouchStart.bind(this));
+ window.addEventListener('touchend', this.onTouchEnd.bind(this));
+ window.addEventListener('touchcancel', this.onTouchCancel.bind(this));
+ window.addEventListener('touchmove', this.onTouchMove.bind(this), {passive: false});
+ window.addEventListener('contextmenu', this.onContextMenu.bind(this));
+ }
+
chrome.runtime.onMessage.addListener(this.onBgMessage.bind(this));
} catch (e) {
this.onError(e);
@@ -79,7 +96,7 @@ class Frontend {
const search = async () => {
try {
- await this.searchAt({x: e.clientX, y: e.clientY});
+ await this.searchAt({x: e.clientX, y: e.clientY}, Frontend.SearchType.Mouse);
} catch (e) {
this.onError(e);
}
@@ -93,6 +110,14 @@ class Frontend {
}
onMouseDown(e) {
+ if (this.mouseDownPrevent) {
+ this.setMouseDownPrevent(false, false);
+ this.setClickPrevent(true);
+ e.preventDefault();
+ e.stopPropagation();
+ return false;
+ }
+
this.mousePosLast = {x: e.clientX, y: e.clientY};
this.popupTimerClear();
this.searchClear();
@@ -133,6 +158,85 @@ class Frontend {
this.searchClear();
}
+ onClick(e) {
+ if (this.clickPrevent) {
+ this.setClickPrevent(false);
+ e.preventDefault();
+ e.stopPropagation();
+ return false;
+ }
+ }
+
+ onTouchStart(e) {
+ if (this.primaryTouchIdentifier !== null && this.getIndexOfTouch(e.touches, this.primaryTouchIdentifier) >= 0) {
+ return;
+ }
+
+ this.setPrimaryTouch(this.getPrimaryTouch(e.changedTouches));
+ }
+
+ onTouchEnd(e) {
+ if (this.primaryTouchIdentifier === null) {
+ return;
+ }
+
+ if (this.getIndexOfTouch(e.changedTouches, this.primaryTouchIdentifier) < 0) {
+ return;
+ }
+
+ this.setPrimaryTouch(this.getPrimaryTouch(this.excludeTouches(e.touches, e.changedTouches)));
+ }
+
+ onTouchCancel(e) {
+ this.onTouchEnd(e);
+ }
+
+ onTouchMove(e) {
+ if (!this.scrollPrevent || this.primaryTouchIdentifier === null) {
+ return;
+ }
+
+ const touches = e.changedTouches;
+ const index = this.getIndexOfTouch(touches, this.primaryTouchIdentifier);
+ if (index < 0) {
+ return;
+ }
+
+ const touch = touches[index];
+ this.searchFromTouch(touch.clientX, touch.clientY, Frontend.SearchType.TouchMove);
+
+ e.preventDefault(); // Disable scroll
+ }
+
+ onContextMenu(e) {
+ if (this.contextMenuPrevent) {
+ this.setContextMenuPrevent(false, false);
+ e.preventDefault();
+ e.stopPropagation();
+ return false;
+ }
+ }
+
+ onAfterSearch(newRange, type, searched, success) {
+ if (type === Frontend.SearchType.Mouse) {
+ return;
+ }
+
+ if (
+ !this.contextMenuChecking ||
+ (this.contextMenuPreviousRange === null ? newRange === null : this.contextMenuPreviousRange.equals(newRange))) {
+ return;
+ }
+
+ if (type === Frontend.SearchType.TouchStart && newRange !== null) {
+ this.scrollPrevent = true;
+ }
+
+ this.setContextMenuPrevent(true, false);
+ this.setMouseDownPrevent(true, false);
+ this.contextMenuChecking = false;
+ }
+
onBgMessage({action, params}, sender, callback) {
const handlers = {
optionsSet: options => {
@@ -167,18 +271,22 @@ class Frontend {
}
}
- async searchAt(point) {
+ async searchAt(point, type) {
if (this.pendingLookup || this.popup.containsPoint(point)) {
return;
}
const textSource = docRangeFromPoint(point);
let hideResults = !textSource || !textSource.containsPoint(point);
+ let searched = false;
+ let success = false;
try {
if (!hideResults && (!this.textSourceLast || !this.textSourceLast.equals(textSource))) {
+ searched = true;
this.pendingLookup = true;
hideResults = !await this.searchTerms(textSource) && !await this.searchKanji(textSource);
+ success = true;
}
} catch (e) {
if (window.yomichan_orphaned) {
@@ -196,6 +304,7 @@ class Frontend {
}
this.pendingLookup = false;
+ this.onAfterSearch(this.textSourceLast, type, searched, success);
}
}
@@ -262,7 +371,97 @@ class Frontend {
this.textSourceLast = null;
}
+
+ getPrimaryTouch(touchList) {
+ return touchList.length > 0 ? touchList[0] : null;
+ }
+
+ getIndexOfTouch(touchList, identifier) {
+ for (let i = 0, ii = touchList.length; i < ii; ++i) {
+ let t = touchList[i];
+ if (t.identifier === identifier) {
+ return i;
+ }
+ }
+ return -1;
+ }
+
+ excludeTouches(touchList, excludeTouchList) {
+ const result = [];
+ for (let i = 0, ii = touchList.length; i < ii; ++i) {
+ let r = result[i];
+ if (this.getIndexOfTouch(excludeTouchList, r.identifier) < 0) {
+ result.push(r);
+ }
+ }
+ return result;
+ }
+
+ setPrimaryTouch(touch) {
+ if (touch === null) {
+ this.primaryTouchIdentifier = null;
+ this.contextMenuPreviousRange = null;
+ this.contextMenuChecking = false;
+ this.scrollPrevent = false;
+ this.setContextMenuPrevent(false, true);
+ this.setMouseDownPrevent(false, true);
+ this.setClickPrevent(false);
+ }
+ else {
+ this.primaryTouchIdentifier = touch.identifier;
+ this.contextMenuPreviousRange = this.textSourceLast ? this.textSourceLast.clone() : null;
+ this.contextMenuChecking = true;
+ this.scrollPrevent = false;
+ this.setContextMenuPrevent(false, false);
+ this.setMouseDownPrevent(false, false);
+ this.setClickPrevent(false);
+
+ this.searchFromTouch(touch.clientX, touch.clientY, Frontend.SearchType.TouchStart);
+ }
+ }
+
+ setContextMenuPrevent(value, delay) {
+ if (!delay) {
+ this.contextMenuPrevent = value;
+ }
+ }
+
+ setMouseDownPrevent(value, delay) {
+ if (!delay) {
+ this.mouseDownPrevent = value;
+ }
+ }
+
+ setClickPrevent(value) {
+ this.clickPrevent = value;
+ }
+
+ searchFromTouch(x, y, type) {
+ this.popupTimerClear();
+
+ if (!this.options.general.enable || this.pendingLookup) {
+ return;
+ }
+
+ const pos = {x: x, y: y};
+
+ const search = async () => {
+ try {
+ await this.searchAt(pos, type);
+ } catch (e) {
+ this.onError(e);
+ }
+ };
+
+ search();
+ }
}
+Frontend.SearchType = {
+ Mouse: 0,
+ TouchStart: 1,
+ TouchMove: 2
+};
+
window.yomichan_frontend = new Frontend();
window.yomichan_frontend.prepare();