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[apps/shared] Change zoom to ensure to keep the same cusor position

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Change-Id: Ie24fcdda2aad7da8872915511fcd2e71d19ff8a6
This commit is contained in:
Émilie Feral
2017-06-09 11:35:53 +02:00
parent 6bdf74bddf
commit d6528d84a9
4 changed files with 19 additions and 19 deletions
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8
apps/shared/zoom_parameter_controller.cpp
View File

@@ -21,12 +21,16 @@ View * ZoomParameterController::view() {
bool ZoomParameterController::handleEvent(Ion::Events::Event event) {
if (event == Ion::Events::Plus) {
m_interactiveRange->zoom(1.0f/3.0f);
float meanX = (m_interactiveRange->xMin()+m_interactiveRange->xMax())/2.0f;
float meanY = (m_interactiveRange->yMin()+m_interactiveRange->yMax())/2.0f;
m_interactiveRange->zoom(2.0f/3.0f, meanX, meanY);
m_contentView.curveView()->reload();
return true;
}
if (event == Ion::Events::Minus) {
m_interactiveRange->zoom(3.0f/4.0f);
float meanX = (m_interactiveRange->xMin()+m_interactiveRange->xMax())/2.0f;
float meanY = (m_interactiveRange->yMin()+m_interactiveRange->yMax())/2.0f;
m_interactiveRange->zoom(3.0f/2.0f, meanX, meanY);
m_contentView.curveView()->reload();
return true;
}