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[apps/code/editor_controller] Fix backspace event handling

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If there are only spaces on the left of the cursor, then a backspace
should remove two spaces (or one if there is only one of it). The number
of spaces was miscomputed.
This commit is contained in:
Ruben Dashyan
2019-06-05 17:38:22 +02:00
committed by Léa Saviot
parent 3ed2c3d046
commit 5015bc231b
1 changed files with 12 additions and 2 deletions
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14
apps/code/editor_controller.cpp
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@@ -70,9 +70,19 @@ bool EditorController::textAreaDidReceiveEvent(TextArea * textArea, Ion::Events:
/* If the cursor is on the left of the text of a line, backspace one
* indentation space at a time. */
const char * text = textArea->text();
const char * firstNonSpace = UTF8Helper::NotCodePointSearch(text, ' ', true, textArea->cursorLocation());
const char * cursorLocation = textArea->cursorLocation();
const char * firstNonSpace = UTF8Helper::NotCodePointSearch(text, ' ', true, cursorLocation);
assert(firstNonSpace >= text);
if (UTF8Helper::CodePointIs(firstNonSpace, '\n') && ((text - firstNonSpace)/UTF8Decoder::CharSizeOfCodePoint(' ')) >= k_indentationSpacesNumber) {
bool cursorIsPrecededOnTheLineBySpacesOnly = false;
size_t numberOfSpaces = cursorLocation - firstNonSpace;
if (UTF8Helper::CodePointIs(firstNonSpace, '\n')) {
cursorIsPrecededOnTheLineBySpacesOnly = true;
numberOfSpaces -= UTF8Decoder::CharSizeOfCodePoint('\n');
} else if (firstNonSpace == text) {
cursorIsPrecededOnTheLineBySpacesOnly = true;
}
numberOfSpaces = numberOfSpaces / UTF8Decoder::CharSizeOfCodePoint(' ');
if (cursorIsPrecededOnTheLineBySpacesOnly && numberOfSpaces >= k_indentationSpacesNumber) {
for (int i = 0; i < k_indentationSpacesNumber; i++) {
textArea->removeCodePoint();
}