1 files changed, 79 insertions, 0 deletions
diff --git a/Src/external_dependencies/openmpt-trunk/mptrack/ScaleEnvPointsDlg.cpp b/Src/external_dependencies/openmpt-trunk/mptrack/ScaleEnvPointsDlg.cpp
new file mode 100644
index 00000000..17d3df89
--- /dev/null
+++ b/Src/external_dependencies/openmpt-trunk/mptrack/ScaleEnvPointsDlg.cpp
@@ -0,0 +1,79 @@
+/*
+ * ScaleEnvPointsDlg.cpp
+ * ---------------------
+ * Purpose: Dialog for scaling instrument envelope points on x and y axis.
+ * Notes  : (currently none)
+ * Authors: OpenMPT Devs
+ * The OpenMPT source code is released under the BSD license. Read LICENSE for more details.
+ */
+
+
+#include "stdafx.h"
+#include "resource.h"
+#include "ModInstrument.h"
+#include "ScaleEnvPointsDlg.h"
+
+
+OPENMPT_NAMESPACE_BEGIN
+
+double CScaleEnvPointsDlg::m_factorX = 1.0;
+double CScaleEnvPointsDlg::m_factorY = 1.0;
+double CScaleEnvPointsDlg::m_offsetY = 0.0;
+
+BOOL CScaleEnvPointsDlg::OnInitDialog()
+{
+	CDialog::OnInitDialog();
+	m_EditX.SubclassDlgItem(IDC_EDIT_FACTORX, this);
+	m_EditY.SubclassDlgItem(IDC_EDIT_FACTORY, this);
+	m_EditOffset.SubclassDlgItem(IDC_EDIT3, this);
+	m_EditX.AllowNegative(false);
+	m_EditX.SetDecimalValue(m_factorX);
+	m_EditY.SetDecimalValue(m_factorY);
+	m_EditOffset.SetDecimalValue(m_offsetY);
+
+	return TRUE;	// return TRUE unless you set the focus to a control
+}
+
+
+void CScaleEnvPointsDlg::OnOK()
+{
+	m_EditX.GetDecimalValue(m_factorX);
+	m_EditY.GetDecimalValue(m_factorY);
+	m_EditOffset.GetDecimalValue(m_offsetY);
+	CDialog::OnOK();
+}
+
+
+void CScaleEnvPointsDlg::Apply()
+{
+	if(m_factorX > 0 && m_factorX != 1)
+	{
+		for(uint32 i = 0; i < m_Env.size(); i++)
+		{
+			m_Env[i].tick = static_cast<EnvelopeNode::tick_t>(m_factorX * m_Env[i].tick);
+
+			// Checking that the order of points is preserved.
+			if(i > 0 && m_Env[i].tick <= m_Env[i - 1].tick)
+				m_Env[i].tick = m_Env[i - 1].tick + 1;
+		}
+	}
+
+	if(m_factorY != 1 || m_offsetY != 0)
+	{
+		double factor = m_factorY;
+		bool invert = false;
+		if(m_factorY < 0)
+		{
+			invert = true;
+			factor = -factor;
+		}
+		for(auto &pt : m_Env)
+		{
+			if(invert) pt.value = ENVELOPE_MAX - pt.value;
+			pt.value = mpt::saturate_round<EnvelopeNode::value_t>(Clamp((factor * (pt.value - m_nCenter)) + m_nCenter + m_offsetY, double(ENVELOPE_MIN), double(ENVELOPE_MAX)));
+		}
+	}
+}
+
+
+OPENMPT_NAMESPACE_END