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experimental/editor: Find nearest possible cursor position when click in whitespace

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Bug: skia:9020
Change-Id: Ieb1f7a545ab3458db7124535b3be3c3d589bf1be
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/229388
Reviewed-by: Derek Sollenberger <djsollen@google.com>
Commit-Queue: Hal Canary <halcanary@google.com>
This commit is contained in:
Hal Canary 2019-07-23 16:59:37 -04:00 committed by Skia Commit-Bot
parent fdf4bfe6d3
commit b3956dc6ba
1 changed files with 20 additions and 13 deletions
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33
experimental/editor/editor.cpp
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@ -176,28 +176,35 @@ void Editor::setFont(SkFont font) {
}
}
static SkPoint to_point(SkIPoint p) { return {(float)p.x(), (float)p.y()}; }
Editor::TextPosition Editor::getPosition(SkIPoint xy) {
Editor::TextPosition approximatePosition;
this->reshapeAll();
for (size_t j = 0; j < fLines.size(); ++j) {
const TextLine& line = fLines[j];
if (!line.fBlob) {
SkIRect lineRect = {0,
line.fOrigin.y(),
fWidth,
j + 1 < fLines.size() ? fLines[j + 1].fOrigin.y() : INT_MAX};
if (const SkTextBlob* b = line.fBlob.get()) {
SkIRect r = b->bounds().roundOut();
r.offset(line.fOrigin);
lineRect.join(r);
}
if (!lineRect.contains(xy.x(), xy.y())) {
continue;
}
SkIRect b = line.fBlob->bounds().roundOut().makeOffset(line.fOrigin.x(), line.fOrigin.y());
if (b.contains(xy.x(), xy.y())) {
xy -= line.fOrigin;
const std::vector<SkRect>& pos = line.fCursorPos;
for (size_t i = 0; i < pos.size(); ++i) {
if (pos[i] == kUnsetRect) {
continue;
}
if (pos[i].contains((float)xy.x(), (float)xy.y())) {
return Editor::TextPosition{i, j};
}
SkPoint pt = to_point(xy - line.fOrigin);
const std::vector<SkRect>& pos = line.fCursorPos;
for (size_t i = 0; i < pos.size(); ++i) {
if (pos[i] != kUnsetRect && pos[i].contains(pt.x(), pt.y())) {
return Editor::TextPosition{i, j};
}
}
approximatePosition = {xy.x() <= line.fOrigin.x() ? 0 : line.fText.size(), j};
}
return Editor::TextPosition();
return approximatePosition;
}
static inline bool is_utf8_continuation(char v) {