static void drawHandler(GL_PageControls_TypeDef* pThis, _Bool force)
{
LabelData *pInstData = getInstDataFromPageCtrl(pThis);
// Check if a call to Widget_ChangeLabelText() has happened:
_Bool change = 0;
// Allow code to update itself (via an update handler, if any).
if (pInstData->pUpdateHandler != 0) {
change |= pInstData->pUpdateHandler(pThis, force);
}
change |= pInstData->isRedrawRequired;
int x = pThis->objCoordinates.MinX;
int y = pThis->objCoordinates.MinY;
// Redraw?
if (force || change) {
GL_SetTextColor(pInstData->textColor);
GL_SetBackColor(pInstData->backColor);
GL_SetFont(pInstData->font);
GL_PrintString(x, y, pInstData->strText, pInstData->isTransparent);
}
pInstData->isRedrawRequired = 0;
}
void Widget_ChangeLabelText(GL_PageControls_TypeDef *pThis, const char* strText)
{
LabelData *pInstData = getInstDataFromPageCtrl(pThis);
// Store Text
// Note: Buffer is 1 bigger than WIDGET_LABEL_TEXT_MAXLENGTH
strncpy(pInstData->strText, strText, WIDGET_LABEL_TEXT_MAXLENGTH);
pInstData->strText[WIDGET_LABEL_TEXT_MAXLENGTH] = 0;
pInstData->isRedrawRequired = 1;
}
void Widget_ChangeLabelText(GL_PageControls_TypeDef *pThis, const char* strText)
{
LabelData *pInstData = getInstDataFromPageCtrl(pThis);
// Check if the new text is different than the old text:
if (strncmp(pInstData->strText, strText, WIDGET_LABEL_TEXT_MAXLENGTH) == 0) {
// Text is unchanged; don't copy and don't redraw.
return;
}
// Store Text
// Note: Buffer is 1 bigger than WIDGET_LABEL_TEXT_MAXLENGTH
strncpy(pInstData->strText, strText, WIDGET_LABEL_TEXT_MAXLENGTH);
pInstData->strText[WIDGET_LABEL_TEXT_MAXLENGTH] = 0;
pInstData->isRedrawRequired = 1;
}
static uint16_t getHeight(GL_PageControls_TypeDef* pThis)
{
LabelData *pInstData = getInstDataFromPageCtrl(pThis);
return GL_GetFontLetterHeight(pInstData->font);
}
/*
* Private interface
*/
static uint16_t getWidth(GL_PageControls_TypeDef* pThis)
{
LabelData *pInstData = getInstDataFromPageCtrl(pThis);
return strlen(pInstData->strText) * GL_GetFontLetterWidth(pInstData->font);
}
void Widget_ChangeLabelColour(GL_PageControls_TypeDef *pThis, uint16_t newTextColour)
{
LabelData *pInstData = getInstDataFromPageCtrl(pThis);
pInstData->textColor = newTextColour;
pInstData->isRedrawRequired = 1;
}
