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[escher] move cursor position in textfield

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Change-Id: I10df7f7559c05be1d93fd72088baa5164f69911e
This commit is contained in:
Émilie Feral
2016-11-07 10:49:53 +01:00
parent a6b251510f
commit 46638f8ffc
2 changed files with 26 additions and 9 deletions
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2
escher/include/escher/text_field.h
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@@ -13,7 +13,6 @@ public:
void drawRect(KDContext * ctx, KDRect rect) const override;
// Responder
bool handleEvent(Ion::Events::Event event) override;
const char * textBuffer() const;
int bufferLength() const;
void setTextBuffer(const char * text);
@@ -24,6 +23,7 @@ protected:
#endif
char * m_textBuffer;
size_t m_currentTextLength;
size_t m_currentCursorPosition;
private:
size_t m_textBufferSize;
TextFieldDelegate * m_delegate;

33
escher/src/text_field.cpp
View File

@@ -5,6 +5,7 @@ TextField::TextField(Responder * parentResponder, char * textBuffer, size_t text
Responder(parentResponder),
m_textBuffer(textBuffer),
m_currentTextLength(0),
m_currentCursorPosition(0),
m_textBufferSize(textBufferSize),
m_delegate(delegate)
{
@@ -32,13 +33,26 @@ bool TextField::handleEvent(Ion::Events::Event event) {
}
}
switch (event) {
case Ion::Events::Event::LEFT_ARROW:
if (m_currentCursorPosition > 0) {
m_currentCursorPosition--;
}
return true;
case Ion::Events::Event::RIGHT_ARROW:
if (m_currentCursorPosition < m_currentTextLength) {
m_currentCursorPosition++;
}
return true;
case Ion::Events::Event::DELETE:
if (m_currentTextLength > 0) {
if (m_currentCursorPosition > 0) {
KDSize sizePreviousText = KDText::stringSize(m_textBuffer);
m_currentTextLength--;
m_currentCursorPosition--;
for (int k = m_currentCursorPosition; k < m_currentTextLength; k ++) {
m_textBuffer[k] = m_textBuffer[k+1];
}
m_textBuffer[m_currentTextLength] = 0;
KDSize sizeText = KDText::stringSize(m_textBuffer);
KDRect dirtyZone(sizeText.width(), 0, sizePreviousText.width()-sizeText.width(), sizeText.height());
KDRect dirtyZone(0, 0, sizePreviousText.width(), sizePreviousText.height());
markRectAsDirty(dirtyZone);
}
return true;
@@ -47,11 +61,13 @@ bool TextField::handleEvent(Ion::Events::Event event) {
return false;
}
if (m_currentTextLength == 0 || m_currentTextLength-1 < m_textBufferSize) {
KDSize sizePreviousText = KDText::stringSize(m_textBuffer);
m_textBuffer[m_currentTextLength++] = (int)event;
m_textBuffer[m_currentTextLength] = 0;
for (int k = m_currentTextLength; k > m_currentCursorPosition; k--) {
m_textBuffer[k] = m_textBuffer[k-1];
}
m_textBuffer[++m_currentTextLength] = 0;
m_textBuffer[m_currentCursorPosition++] = (int)event;
KDSize sizeText = KDText::stringSize(m_textBuffer);
KDRect dirtyZone(sizePreviousText.width(), 0, sizeText.width()-sizePreviousText.width(), sizeText.height());
KDRect dirtyZone(0, 0, sizeText.width(), sizeText.height());
markRectAsDirty(dirtyZone);
}
return true;
@@ -69,7 +85,8 @@ int TextField::bufferLength () const {
void TextField::setTextBuffer(const char * text) {
strlcpy(m_textBuffer, text, m_textBufferSize);
m_currentTextLength = strlen(text);
m_currentCursorPosition = strlen(text);
m_currentTextLength = m_currentCursorPosition;
markRectAsDirty(bounds());
}