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Make CandidatesView touchable (#680)
* Make CandidatesView touchable * Update touchEventReceiverWindow's position after CandidatesView's * Disable animations * Make pagination icons clickable * Fix selecting paged candidate --------- Co-authored-by: Rocka <i@rocka.me>
1 parent 583b562 commit ad08268

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10 files changed

+173
-9
lines changed

10 files changed

+173
-9
lines changed

‎app/src/main/cpp/androidfrontend/androidfrontend.cpp

Lines changed: 46 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -131,7 +131,7 @@ class AndroidInputContext : public InputContextV2 {
131131
frontend_->updatePagedCandidate(paged);
132132
}
133133

134-
bool selectCandidate(int idx) {
134+
bool selectCandidateBulk(int idx) {
135135
const auto &list = inputPanel().candidateList();
136136
if (!list) {
137137
return false;
@@ -150,6 +150,20 @@ class AndroidInputContext : public InputContextV2 {
150150
return true;
151151
}
152152

153+
bool selectCandidatePaged(int idx) {
154+
const auto &list = inputPanel().candidateList();
155+
if (!list) {
156+
return false;
157+
}
158+
try {
159+
list->candidate(idx).select(this);
160+
} catch (const std::invalid_argument &e) {
161+
FCITX_WARN() << "selectCandidate index out of range";
162+
return false;
163+
}
164+
return true;
165+
}
166+
153167
std::vector<std::string> getCandidates(const int offset, const int limit) {
154168
std::vector<std::string> candidates;
155169
const auto &list = inputPanel().candidateList();
@@ -237,6 +251,27 @@ class AndroidInputContext : public InputContextV2 {
237251
}
238252
}
239253

254+
void offsetCandidatePage(int delta) {
255+
if (delta == 0) {
256+
return;
257+
}
258+
const auto &list = inputPanel().candidateList();
259+
if (!list) {
260+
return;
261+
}
262+
const auto &pageable = list->toPageable();
263+
if (!pageable) {
264+
return;
265+
}
266+
if (delta > 0 && pageable->hasNext()) {
267+
pageable->next();
268+
updateUserInterface(UserInterfaceComponent::InputPanel);
269+
} else if (delta < 0 && pageable->hasPrev()) {
270+
pageable->prev();
271+
updateUserInterface(UserInterfaceComponent::InputPanel);
272+
}
273+
}
274+
240275
private:
241276
AndroidFrontend *frontend_;
242277
int uid_;
@@ -328,7 +363,11 @@ void AndroidFrontend::releaseInputContext(const int uid) {
328363

329364
bool AndroidFrontend::selectCandidate(int idx) {
330365
if (!activeIC_) return false;
331-
return activeIC_->selectCandidate(idx);
366+
if (pagingMode_) {
367+
return activeIC_->selectCandidatePaged(idx);
368+
} else {
369+
return activeIC_->selectCandidateBulk(idx);
370+
}
332371
}
333372

334373
std::vector<CandidateAction> AndroidFrontend::getCandidateActions(const int idx) {
@@ -419,6 +458,11 @@ void AndroidFrontend::updatePagedCandidate(const PagedCandidateEntity &paged) {
419458
pagedCandidateCallback(paged);
420459
}
421460

461+
void AndroidFrontend::offsetCandidatePage(int delta) {
462+
if (!activeIC_) return;
463+
activeIC_->offsetCandidatePage(delta);
464+
}
465+
422466
void AndroidFrontend::setCommitStringCallback(const CommitStringCallback &callback) {
423467
commitStringCallback = callback;
424468
}

‎app/src/main/cpp/androidfrontend/androidfrontend.h

Lines changed: 2 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -47,6 +47,7 @@ class AndroidFrontend : public AddonInstance {
4747
void deleteSurrounding(const int before, const int after);
4848
void showToast(const std::string &s);
4949
void setCandidatePagingMode(const int mode);
50+
void offsetCandidatePage(int delta);
5051
void setCandidateListCallback(const CandidateListCallback &callback);
5152
void setCommitStringCallback(const CommitStringCallback &callback);
5253
void setPreeditCallback(const ClientPreeditCallback &callback);
@@ -74,6 +75,7 @@ class AndroidFrontend : public AddonInstance {
7475
FCITX_ADDON_EXPORT_FUNCTION(AndroidFrontend, triggerCandidateAction);
7576
FCITX_ADDON_EXPORT_FUNCTION(AndroidFrontend, showToast);
7677
FCITX_ADDON_EXPORT_FUNCTION(AndroidFrontend, setCandidatePagingMode);
78+
FCITX_ADDON_EXPORT_FUNCTION(AndroidFrontend, offsetCandidatePage);
7779
FCITX_ADDON_EXPORT_FUNCTION(AndroidFrontend, setCandidateListCallback);
7880
FCITX_ADDON_EXPORT_FUNCTION(AndroidFrontend, setCommitStringCallback);
7981
FCITX_ADDON_EXPORT_FUNCTION(AndroidFrontend, setPreeditCallback);

‎app/src/main/cpp/androidfrontend/androidfrontend_public.h

Lines changed: 3 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -68,6 +68,9 @@ FCITX_ADDON_DECLARE_FUNCTION(AndroidFrontend, showToast,
6868
FCITX_ADDON_DECLARE_FUNCTION(AndroidFrontend, setCandidatePagingMode,
6969
void(const int))
7070

71+
FCITX_ADDON_DECLARE_FUNCTION(AndroidFrontend, offsetCandidatePage,
72+
void(int))
73+
7174
FCITX_ADDON_DECLARE_FUNCTION(AndroidFrontend, setCandidateListCallback,
7275
void(const CandidateListCallback &))
7376

‎app/src/main/cpp/native-lib.cpp

Lines changed: 11 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -429,6 +429,10 @@ class Fcitx {
429429
return p_frontend->call<fcitx::IAndroidFrontend::setCandidatePagingMode>(mode);
430430
}
431431

432+
void offsetCandidatePage(int delta) {
433+
return p_frontend->call<fcitx::IAndroidFrontend::offsetCandidatePage>(delta);
434+
}
435+
432436
void save() {
433437
p_instance->save();
434438
}
@@ -1068,6 +1072,13 @@ Java_org_fcitx_fcitx5_android_core_Fcitx_setFcitxCandidatePagingMode(JNIEnv *env
10681072
Fcitx::Instance().setCandidatePagingMode(mode);
10691073
}
10701074

1075+
extern "C"
1076+
JNIEXPORT void JNICALL
1077+
Java_org_fcitx_fcitx5_android_core_Fcitx_offsetFcitxCandidatePage(JNIEnv *env, jclass clazz, jint delta) {
1078+
RETURN_IF_NOT_RUNNING
1079+
Fcitx::Instance().offsetCandidatePage(delta);
1080+
}
1081+
10711082
extern "C"
10721083
JNIEXPORT void JNICALL
10731084
Java_org_fcitx_fcitx5_android_core_Fcitx_loopOnce(JNIEnv *env, jclass clazz) {

‎app/src/main/java/org/fcitx/fcitx5/android/core/Fcitx.kt

Lines changed: 27 additions & 3 deletions
Original file line numberDiff line numberDiff line change
@@ -73,7 +73,13 @@ class Fcitx(private val context: Context) : FcitxAPI, FcitxLifecycleOwner {
7373
override suspend fun save() = withFcitxContext { saveFcitxState() }
7474
override suspend fun reloadConfig() = withFcitxContext { reloadFcitxConfig() }
7575

76-
override suspend fun sendKey(key: String, states: UInt, code: Int, up: Boolean, timestamp: Int) =
76+
override suspend fun sendKey(
77+
key: String,
78+
states: UInt,
79+
code: Int,
80+
up: Boolean,
81+
timestamp: Int
82+
) =
7783
withFcitxContext { sendKeyToFcitxString(key, states.toInt(), code, up, timestamp) }
7884

7985
override suspend fun sendKey(c: Char, states: UInt, code: Int, up: Boolean, timestamp: Int) =
@@ -82,7 +88,13 @@ class Fcitx(private val context: Context) : FcitxAPI, FcitxLifecycleOwner {
8288
override suspend fun sendKey(sym: Int, states: UInt, code: Int, up: Boolean, timestamp: Int) =
8389
withFcitxContext { sendKeySymToFcitx(sym, states.toInt(), code, up, timestamp) }
8490

85-
override suspend fun sendKey(sym: KeySym, states: KeyStates, code: Int, up: Boolean, timestamp: Int) =
91+
override suspend fun sendKey(
92+
sym: KeySym,
93+
states: KeyStates,
94+
code: Int,
95+
up: Boolean,
96+
timestamp: Int
97+
) =
8698
withFcitxContext { sendKeySymToFcitx(sym.sym, states.toInt(), code, up, timestamp) }
8799

88100
override suspend fun select(idx: Int): Boolean = withFcitxContext { selectCandidate(idx) }
@@ -172,6 +184,9 @@ class Fcitx(private val context: Context) : FcitxAPI, FcitxLifecycleOwner {
172184
override suspend fun setCandidatePagingMode(mode: Int) =
173185
withFcitxContext { setFcitxCandidatePagingMode(mode) }
174186

187+
override suspend fun offsetCandidatePage(delta: Int) =
188+
withFcitxContext { offsetFcitxCandidatePage(delta) }
189+
175190
init {
176191
if (lifecycle.currentState != FcitxLifecycle.State.STOPPED)
177192
throw IllegalAccessException("Fcitx5 has already been created!")
@@ -233,7 +248,13 @@ class Fcitx(private val context: Context) : FcitxAPI, FcitxLifecycleOwner {
233248
external fun reloadFcitxConfig()
234249

235250
@JvmStatic
236-
external fun sendKeyToFcitxString(key: String, state: Int, code: Int, up: Boolean, timestamp: Int)
251+
external fun sendKeyToFcitxString(
252+
key: String,
253+
state: Int,
254+
code: Int,
255+
up: Boolean,
256+
timestamp: Int
257+
)
237258

238259
@JvmStatic
239260
external fun sendKeyToFcitxChar(c: Char, state: Int, code: Int, up: Boolean, timestamp: Int)
@@ -343,6 +364,9 @@ class Fcitx(private val context: Context) : FcitxAPI, FcitxLifecycleOwner {
343364
@JvmStatic
344365
external fun setFcitxCandidatePagingMode(mode: Int)
345366

367+
@JvmStatic
368+
external fun offsetFcitxCandidatePage(delta: Int)
369+
346370
@JvmStatic
347371
external fun loopOnce()
348372

‎app/src/main/java/org/fcitx/fcitx5/android/core/FcitxAPI.kt

Lines changed: 1 addition & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -103,5 +103,6 @@ interface FcitxAPI {
103103
suspend fun triggerCandidateAction(idx: Int, actionIdx: Int)
104104

105105
suspend fun setCandidatePagingMode(mode: Int)
106+
suspend fun offsetCandidatePage(delta: Int)
106107

107108
}

‎app/src/main/java/org/fcitx/fcitx5/android/input/CandidatesView.kt

Lines changed: 12 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -16,6 +16,7 @@ import androidx.annotation.Size
1616
import org.fcitx.fcitx5.android.R
1717
import org.fcitx.fcitx5.android.core.FcitxEvent
1818
import org.fcitx.fcitx5.android.daemon.FcitxConnection
19+
import org.fcitx.fcitx5.android.daemon.launchOnReady
1920
import org.fcitx.fcitx5.android.data.prefs.AppPrefs
2021
import org.fcitx.fcitx5.android.data.theme.Theme
2122
import org.fcitx.fcitx5.android.input.candidates.floating.PagedCandidatesUi
@@ -73,6 +74,8 @@ class CandidatesView(
7374
true
7475
}
7576

77+
private val touchEventReceiverWindow = TouchEventReceiverWindow(this)
78+
7679
private val setupTextView: TextView.() -> Unit = {
7780
textSize = fontSize.toFloat()
7881
val v = dp(itemPaddingVertical)
@@ -82,7 +85,11 @@ class CandidatesView(
8285

8386
private val preeditUi = PreeditUi(ctx, theme, setupTextView)
8487

85-
private val candidatesUi = PagedCandidatesUi(ctx, theme, setupTextView).apply {
88+
private val candidatesUi = PagedCandidatesUi(ctx, theme, setupTextView,
89+
onCandidateClick = { index -> fcitx.launchOnReady { it.select(index) } },
90+
onPrevPage = { fcitx.launchOnReady { it.offsetCandidatePage(-1) } },
91+
onNextPage = { fcitx.launchOnReady { it.offsetCandidatePage(1) } }
92+
).apply {
8693
root.viewTreeObserver.addOnGlobalLayoutListener(layoutListener)
8794
}
8895

@@ -116,6 +123,7 @@ class CandidatesView(
116123
candidatesUi.update(paged, orientation)
117124
visibility = VISIBLE
118125
} else {
126+
touchEventReceiverWindow.dismiss()
119127
visibility = GONE
120128
}
121129
}
@@ -141,6 +149,8 @@ class CandidatesView(
141149
}
142150
translationY =
143151
if (bottom + selfHeight > parentHeight - bottomInsets) top - selfHeight else bottom
152+
// update touchEventReceiverWindow's position after CandidatesView's
153+
touchEventReceiverWindow.showup()
144154
shouldUpdatePosition = false
145155
}
146156

@@ -193,6 +203,7 @@ class CandidatesView(
193203
override fun onDetachedFromWindow() {
194204
viewTreeObserver.removeOnPreDrawListener(preDrawListener)
195205
candidatesUi.root.viewTreeObserver.removeOnGlobalLayoutListener(layoutListener)
206+
touchEventReceiverWindow.dismiss()
196207
super.onDetachedFromWindow()
197208
}
198209
}

‎app/src/main/java/org/fcitx/fcitx5/android/input/TouchEventReceiverWindow.kt

Lines changed: 53 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,53 @@
1+
/*
2+
* SPDX-License-Identifier: LGPL-2.1-or-later
3+
* SPDX-FileCopyrightText: Copyright 2025 Fcitx5 for Android Contributors
4+
*/
5+
6+
package org.fcitx.fcitx5.android.input
7+
8+
import android.annotation.SuppressLint
9+
import android.view.Gravity
10+
import android.view.MotionEvent
11+
import android.view.View
12+
import android.widget.PopupWindow
13+
14+
class TouchEventReceiverWindow(
15+
private val contentView: View
16+
) {
17+
private val ctx = contentView.context
18+
19+
private val window = PopupWindow(object : View(ctx) {
20+
@SuppressLint("ClickableViewAccessibility")
21+
override fun onTouchEvent(event: MotionEvent?): Boolean {
22+
return contentView.dispatchTouchEvent(event)
23+
}
24+
}).apply {
25+
// disable animation
26+
animationStyle = 0
27+
}
28+
29+
private var isWindowShowing = false
30+
31+
private val cachedLocation = intArrayOf(0, 0)
32+
33+
fun showup() {
34+
isWindowShowing = true
35+
val (x, y) = cachedLocation.also { contentView.getLocationInWindow(it) }
36+
val width = contentView.width
37+
val height = contentView.height
38+
if (window.isShowing) {
39+
window.update(x, y, width, height)
40+
} else {
41+
window.width = width
42+
window.height = height
43+
window.showAtLocation(contentView, Gravity.NO_GRAVITY, x, y)
44+
}
45+
}
46+
47+
fun dismiss() {
48+
if (isWindowShowing) {
49+
isWindowShowing = false
50+
window.dismiss()
51+
}
52+
}
53+
}

‎app/src/main/java/org/fcitx/fcitx5/android/input/candidates/floating/PagedCandidatesUi.kt

Lines changed: 15 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -7,6 +7,7 @@ package org.fcitx.fcitx5.android.input.candidates.floating
77

88
import android.annotation.SuppressLint
99
import android.content.Context
10+
import android.view.View
1011
import android.view.ViewGroup
1112
import android.widget.TextView
1213
import androidx.core.view.updateLayoutParams
@@ -24,7 +25,10 @@ import splitties.views.dsl.recyclerview.recyclerView
2425
class PagedCandidatesUi(
2526
override val ctx: Context,
2627
val theme: Theme,
27-
private val setupTextView: TextView.() -> Unit
28+
private val setupTextView: TextView.() -> Unit,
29+
private val onCandidateClick: (Int) -> Unit,
30+
private val onPrevPage: () -> Unit,
31+
private val onNextPage: () -> Unit
2832
) : Ui {
2933

3034
private var data = FcitxEvent.PagedCandidateEvent.Data.Empty
@@ -50,6 +54,12 @@ class PagedCandidatesUi(
5054
ui.root.layoutParams = FlexboxLayoutManager.LayoutParams(wrap, wrap).apply {
5155
flexGrow = 1f
5256
}
57+
ui.prevIcon.setOnClickListener {
58+
onPrevPage.invoke()
59+
}
60+
ui.nextIcon.setOnClickListener {
61+
onNextPage.invoke()
62+
}
5363
}
5464
}
5565
}
@@ -59,6 +69,9 @@ class PagedCandidatesUi(
5969
is UiHolder.Candidate -> {
6070
val candidate = data.candidates[position]
6171
holder.ui.update(candidate, active = position == data.cursorIndex)
72+
holder.ui.root.setOnClickListener {
73+
onCandidateClick.invoke(position)
74+
}
6275
}
6376
is UiHolder.Pagination -> {
6477
holder.ui.update(data)
@@ -79,6 +92,7 @@ class PagedCandidatesUi(
7992
isFocusable = false
8093
adapter = candidatesAdapter
8194
layoutManager = candidatesLayoutManager
95+
overScrollMode = View.OVER_SCROLL_NEVER
8296
}
8397

8498
@SuppressLint("NotifyDataSetChanged")

‎app/src/main/java/org/fcitx/fcitx5/android/input/candidates/floating/PaginationUi.kt

Lines changed: 3 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -31,10 +31,11 @@ class PaginationUi(override val ctx: Context, val theme: Theme) : Ui {
3131
imageTintList = ColorStateList.valueOf(theme.keyTextColor)
3232
imageDrawable = drawable(icon)
3333
scaleType = ImageView.ScaleType.CENTER_CROP
34+
isClickable = true
3435
}
3536

36-
private val prevIcon = createIcon(R.drawable.ic_baseline_arrow_prev_24)
37-
private val nextIcon = createIcon(R.drawable.ic_baseline_arrow_next_24)
37+
val prevIcon = createIcon(R.drawable.ic_baseline_arrow_prev_24)
38+
val nextIcon = createIcon(R.drawable.ic_baseline_arrow_next_24)
3839

3940
private val disabledAlpha = styledFloat(android.R.attr.disabledAlpha)
4041

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