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[apps/graph/values] Adjust the title of functions and derivatives in the

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center of cells

Change-Id: Ib09e0d22b4f5389d59e37f77f4ee069e5148c0a7
This commit is contained in:
Émilie Feral
2016-10-19 17:54:24 +02:00
parent 8f5c11cba0
commit b7e150cb8f
1 changed files with 10 additions and 1 deletions
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11
apps/graph/values/function_title_cell.cpp
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@@ -9,6 +9,14 @@ void FunctionTitleCell::setColor(KDColor color) {
void FunctionTitleCell::setDerivative(bool derivative) {
m_derivative = derivative;
PointerTextView * pointerTextView = (PointerTextView *)subviewAtIndex(0);
int textwidth = KDText::stringSize("f").width();
// Here we compute the right horizontal alignment to center "f(x)" or "f'(x)"
if (derivative) {
pointerTextView->setAlignment(0.5f*(m_frame.width() - 5*textwidth)/(m_frame.width() - textwidth), 0.5f);
} else {
pointerTextView->setAlignment(0.5f*(m_frame.width() - 4*textwidth)/(m_frame.width() - textwidth), 0.5f);
}
}
void FunctionTitleCell::drawRect(KDContext * ctx, KDRect rect) const {
@@ -16,8 +24,9 @@ void FunctionTitleCell::drawRect(KDContext * ctx, KDRect rect) const {
// Write the "(x)"
KDColor background = backgroundColor();
KDSize textSize = KDText::stringSize("f");
KDPoint origin(0.5f*(m_frame.width() - textSize.width()), 0.5f*(m_frame.height() - textSize.height()));
KDPoint origin(0.5f*(m_frame.width() - 4*textSize.width()), 0.5f*(m_frame.height() - textSize.height()));
if (m_derivative) {
origin = KDPoint(0.5f*(m_frame.width() - 5*textSize.width()), 0.5f*(m_frame.height() - textSize.height()));
ctx->drawString("'", origin.translatedBy(KDPoint(textSize.width(), 0)), m_functionColor , background);
ctx->drawString(Function::Parameter, origin.translatedBy(KDPoint(2*textSize.width(), 0)), m_functionColor , background);
} else {