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Add more comments to UIUtil::scaleWidgetFontSizes

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This commit is contained in:
Ryan Huffman 2015-02-19 12:01:27 -08:00
parent a8999964f6
commit 4a8e3193a9
1 changed files with 8 additions and 0 deletions
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8
interface/src/UIUtil.cpp
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@ -37,6 +37,12 @@ int UIUtil::getWindowTitleBarHeight(const QWidget* window) {
// font sizes need to be scaled based on the system DPI.
// This function will scale the font size of widget and all
// of its children recursively.
//
// When creating widgets, if a font size isn't explicitly set Qt will choose a
// reasonable, but often different font size across platforms. This means
// YOU SHOUD EXPLICITLY SET ALL FONT SIZES and call this function OR not use
// this function at all. If you mix both you will end up with inconsistent results
// across platforms.
void UIUtil::scaleWidgetFontSizes(QWidget* widget) {
auto glCanvas = DependencyManager::get<GLCanvas>();
@ -57,6 +63,8 @@ void UIUtil::scaleWidgetFontSizes(QWidget* widget) {
internalScaleWidgetFontSizes(widget, fontScale);
}
// Depth-first traversal through widget hierarchy. It is important to do a depth-first
// traversal because modifying the font size of a parent node can affect children.
void UIUtil::internalScaleWidgetFontSizes(QWidget* widget, float scale) {
for (auto child : widget->findChildren<QWidget*>()) {
if (child->parent() == widget) {