Thread: SF.net SVN: jazzplusplus: [326] trunk/jazz

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Revision: 326
          http://jazzplusplus.svn.sourceforge.net/jazzplusplus/?rev=326&view=rev
Author:   pstieber
Date:     2008-03-16 23:22:14 -0700 (Sun, 16 Mar 2008)

Log Message:
-----------
Added a knob to the build.  This will be used in dialogs.

Modified Paths:
--------------
    trunk/jazz/src/Makefile.am
    trunk/jazz/vc8/JazzPlusPlus-VC8.vcproj

Added Paths:
-----------
    trunk/jazz/src/Knob.cpp
    trunk/jazz/src/Knob.h

Added: trunk/jazz/src/Knob.cpp
===================================================================

--- trunk/jazz/src/Knob.cpp	                        (rev 0)
+++ trunk/jazz/src/Knob.cpp	2008-03-17 06:22:14 UTC (rev 326)
@@ -0,0 +1,314 @@
+//*****************************************************************************
+// The JAZZ++ Midi Sequencer
+//
+// Copyright (C) 2008 Peter J. Stieber
+//
+// This program is free software; you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation; either version 2 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program; if not, write to the Free Software
+// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+//*****************************************************************************
+
+#include "WxWidgets.h"
+
+#include <wx/dcbuffer.h>
+
+#include "Knob.h"
+#include "Globals.h"
+
+#include <cmath>
+
+//*****************************************************************************
+// Description:
+//   This is the knob class definition.
+//*****************************************************************************
+//-----------------------------------------------------------------------------
+//-----------------------------------------------------------------------------
+BEGIN_EVENT_TABLE(JZKnob,wxControl)
+  EVT_SIZE(JZKnob::OnSize)
+  EVT_ERASE_BACKGROUND(JZKnob::OnEraseBackground)
+  EVT_PAINT(JZKnob::OnPaint)
+  EVT_LEFT_DOWN(JZKnob::OnMouse)
+  EVT_LEFT_UP(JZKnob::OnMouse)
+  EVT_MOTION(JZKnob::OnMouse)
+  EVT_MOUSEWHEEL(JZKnob::OnMouse)
+END_EVENT_TABLE()
+
+//-----------------------------------------------------------------------------
+//-----------------------------------------------------------------------------
+JZKnob::JZKnob()
+  : wxControl()
+{
+}
+
+//-----------------------------------------------------------------------------
+//-----------------------------------------------------------------------------
+JZKnob::JZKnob(
+  wxWindow* pParent,
+  wxWindowID Id,
+  int Value,
+  int MinValue,
+  int MaxValue,
+  unsigned int MinAngle,
+  unsigned int Range,
+  const wxPoint& Position,
+  const wxSize& Size,
+  long WindowStyle,
+  const wxValidator& Validator,
+  const wxString& Name)
+  : wxControl()
+{
+  Create(
+    pParent,
+    Id,
+    Value,
+    MinValue,
+    MaxValue,
+    MinAngle,
+    Range,
+    Position,
+    Size,
+    WindowStyle,
+    Validator,
+    Name);
+}
+
+//-----------------------------------------------------------------------------
+//-----------------------------------------------------------------------------
+void JZKnob::Create(
+  wxWindow* pParent,
+  wxWindowID Id,
+  int Value,
+  int MinValue,
+  int MaxValue,
+  unsigned int MinAngle,
+  unsigned int Range,
+  const wxPoint& Position,
+  const wxSize& Size,
+  long WindowStyle,
+  const wxValidator& Validator,
+  const wxString& Name)
+{
+  wxControl::Create(
+    pParent,
+    Id,
+    Position,
+    Size,
+    WindowStyle | wxNO_BORDER,
+    Validator,
+    Name);
+
+  SetInitialSize(Size);
+
+  mMin = MinValue;
+  mMax = MaxValue;
+  Range %= 360;
+  MinAngle %= 360;
+  mMaxAngle = (MinAngle + 360 - Range) % 360;
+
+  mRange = Range;
+  SetValue(Value);
+}
+
+//-----------------------------------------------------------------------------
+//-----------------------------------------------------------------------------
+void JZKnob::SetRange(int MinValue, int MaxValue)
+{
+  if (MinValue < MaxValue)
+  {
+    mMin = MinValue;
+    mMax = MaxValue;
+    SetValue(mSetting);
+  }
+}
+
+//-----------------------------------------------------------------------------
+//-----------------------------------------------------------------------------
+int JZKnob::SetValue(int Value)
+{
+  if (Value < mMin)
+  {
+    Value = mMin;
+  }
+  if (Value > mMax)
+  {
+    Value = mMax;
+  }
+
+  if (Value != mSetting)
+  {
+    mSetting = Value;
+    Refresh(false);
+    Update();
+  }
+  return mSetting;
+}
+
+//-----------------------------------------------------------------------------
+//-----------------------------------------------------------------------------
+void JZKnob::OnSize(wxSizeEvent& Event)
+{
+  int Width, Height;
+  GetClientSize(&Width, &Height);
+  if (Width > 0 && Height > 0)
+  {
+    mBuffer.Create(Width, Height);
+  }
+}
+
+//-----------------------------------------------------------------------------
+// Description:
+//   This code always erasew when painting so we override this function to
+// avoid flicker.
+//-----------------------------------------------------------------------------
+void JZKnob::OnEraseBackground(wxEraseEvent& Event)
+{
+}
+
+//-----------------------------------------------------------------------------
+//-----------------------------------------------------------------------------
+void JZKnob::OnPaint(wxPaintEvent& Event)
+{
+  wxSize Size = GetSize();
+
+  double Theta = gDegreesToRadians *
+    (mMaxAngle + (((double)mMax - mSetting) / (mMax - mMin)) * mRange);
+
+  double DeltaX = cos(Theta);
+
+  // Negate because of the upside down coordinates
+  double DeltaY = -sin(Theta);
+
+  wxPaintDC PaintDc(this);
+
+  wxBufferedDC Dc(&PaintDc, mBuffer);
+
+  Dc.SetBackground(wxBrush(wxSystemSettings::GetColour(wxSYS_COLOUR_BTNFACE)));
+
+  Dc.Clear();
+
+  int XCenter, YCenter;
+  GetCenter(XCenter, YCenter);
+
+  int OuterRadius = static_cast<int>(
+    (((Size.x < Size.y) ? Size.x : Size.y) * .48) + 0.5);
+  int InnerRadius = static_cast<int>(OuterRadius * 0.6 + 0.5);
+
+  wxColour Color(120, 100, 100);
+  wxBrush Brush(Color, wxSOLID);
+  wxPen Pen(Color);
+  int KnobRadius = OuterRadius;
+  for (unsigned char Red = 120; KnobRadius > 0 && Red < 250; Red += 5)
+  {
+    Color.Set(Red, 100, 100);
+    Brush.SetColour(Color);
+    Pen.SetColour(Color);
+    Dc.SetBrush(Brush);
+    Dc.SetPen(Pen);
+    Dc.DrawCircle(XCenter, YCenter, KnobRadius);
+    --KnobRadius;
+  }
+
+  wxPen WhitePen(*wxWHITE, 3);
+  Dc.SetPen(WhitePen);
+  Dc.DrawLine(
+    XCenter + static_cast<int>(OuterRadius * DeltaX + 0.5),
+    YCenter + static_cast<int>(OuterRadius * DeltaY + 0.5),
+    XCenter + static_cast<int>(InnerRadius * DeltaX + 0.5),
+    YCenter + static_cast<int>(InnerRadius * DeltaY + 0.5));
+}
+
+//-----------------------------------------------------------------------------
+//-----------------------------------------------------------------------------
+void JZKnob::OnMouse(wxMouseEvent& Event)
+{
+  wxEventType ScrollEvent = wxEVT_NULL;
+
+  if (Event.Moving())
+  {
+    Event.Skip();
+    return;
+  }
+
+  if (Event.GetWheelRotation() < 0)
+  {
+    SetValue(GetValue() - 1);
+    Event.Skip();
+    return;
+  }
+
+  if (Event.GetWheelRotation() > 0)
+  {
+    SetValue(GetValue() + 1);
+    Event.Skip();
+    return;
+  }
+
+  int XCenter, YCenter;
+  GetCenter(XCenter, YCenter);
+
+  double DeltaX = Event.m_x - XCenter;
+  double DeltaY = YCenter - Event.m_y;
+  if (DeltaX == 0.0 && DeltaY == 0.0)
+  {
+    return;
+  }
+
+  double Theta = atan2(DeltaY, DeltaX) * gRadiansToDegrees;
+  if (Theta < 0.0)
+  {
+    Theta += 360.0;
+  }
+
+  double DeltaTheta = Theta - mMaxAngle;
+  if (DeltaTheta < 0.0)
+  {
+    DeltaTheta += 360;
+  }
+  if (DeltaTheta > mRange)
+  {
+    return;
+  }
+  int NewValue = int(mMax - (DeltaTheta / mRange) * (mMax - mMin));
+
+  SetValue(NewValue);
+  if (Event.Dragging() || Event.ButtonUp())
+  {
+    if (Event.ButtonUp())
+    {
+      ScrollEvent = wxEVT_SCROLL_THUMBRELEASE;
+    }
+    else
+    {
+      ScrollEvent = wxEVT_SCROLL_THUMBTRACK;
+    }
+
+    wxScrollEvent ScrollEvent(ScrollEvent, m_windowId);
+    ScrollEvent.SetPosition(NewValue);
+    ScrollEvent.SetEventObject(this);
+    GetEventHandler()->ProcessEvent(ScrollEvent);
+
+    wxCommandEvent CommandEvent(wxEVT_COMMAND_SLIDER_UPDATED, m_windowId);
+    CommandEvent.SetInt(NewValue);
+    CommandEvent.SetEventObject(this);
+    GetEventHandler()->ProcessEvent(CommandEvent);
+  }
+}
+
+//-----------------------------------------------------------------------------
+//-----------------------------------------------------------------------------
+void JZKnob::GetCenter(int& x, int& y) const
+{
+  wxSize Size = GetSize();
+  x = Size.x / 2;
+  y = Size.y / 2;
+}


Property changes on: trunk/jazz/src/Knob.cpp
___________________________________________________________________
Name: svn:eol-style
   + native

Added: trunk/jazz/src/Knob.h
===================================================================
--- trunk/jazz/src/Knob.h	                        (rev 0)
+++ trunk/jazz/src/Knob.h	2008-03-17 06:22:14 UTC (rev 326)
@@ -0,0 +1,171 @@
+//*****************************************************************************
+// The JAZZ++ Midi Sequencer
+//
+// Copyright (C) 2008 Peter J. Stieber
+//
+// This program is free software; you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation; either version 2 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program; if not, write to the Free Software
+// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+//*****************************************************************************
+
+#ifndef JZ_KNOB_H
+#define JZ_KNOB_H
+
+//*****************************************************************************
+// Description:
+//   This is the knob class declaration.  This is a custom control that looks
+// like a mixer knob.
+//*****************************************************************************
+class JZKnob : public wxControl
+{
+  public:
+
+    JZKnob();
+
+    JZKnob(
+      wxWindow* pParent,
+      wxWindowID Id,
+      int Value,
+      int MinValue,
+      int MaxValue,
+      unsigned int MinAngle = 240,
+      unsigned int Range = 300,
+      const wxPoint& Position = wxDefaultPosition,
+      const wxSize& Size = wxSize(40, 40),
+      long WindowStyle = wxNO_BORDER,
+      const wxValidator& Validator = wxDefaultValidator,
+      const wxString& Name = wxT("knob"));
+
+    void Create(
+      wxWindow* pParent,
+      wxWindowID Id,
+      int Value,
+      int MinValue,
+      int MaxValue,
+      unsigned int MinAngle = 240,
+      unsigned int Range = 300,
+      const wxPoint& Position = wxDefaultPosition,
+      const wxSize& Size = wxSize(40, 40),
+      long WindowStyle = wxNO_BORDER,
+      const wxValidator& Validator = wxDefaultValidator,
+      const wxString& Name = wxT("knob"));
+
+    // Retrieve/change the range
+    void SetRange(int MinValue, int MaxValue);
+
+    int GetMin() const;
+
+    int GetMax() const;
+
+    void SetMin(int MinValue);
+
+    void SetMax(int MaxValue);
+
+    unsigned int GetMinAngle() const;
+
+    int GetMaxAngle() const;
+
+    int GetValue() const;
+
+    int SetValue(int Value);
+
+  private:
+
+    void GetCenter(int& x, int& y) const;
+
+    void OnSize(wxSizeEvent& Event);
+
+    void OnEraseBackground(wxEraseEvent& Event);
+
+    void OnPaint(wxPaintEvent& Event);
+
+    void OnMouse(wxMouseEvent& Event);
+
+  private:
+
+    int mMin;
+
+    int mMax;
+
+    int mSetting;
+
+    unsigned int mMaxAngle;
+
+    unsigned int mRange;
+
+    wxBitmap mBuffer;
+
+  DECLARE_EVENT_TABLE()
+};
+
+//*****************************************************************************
+// Description:
+//   These are the knob inline member functions.
+//*****************************************************************************
+//-----------------------------------------------------------------------------
+//-----------------------------------------------------------------------------
+inline
+int JZKnob::GetMin() const
+{
+  return mMin;
+}
+
+//-----------------------------------------------------------------------------
+//-----------------------------------------------------------------------------
+inline
+int JZKnob::GetMax() const
+{
+  return mMax;
+}
+
+//-----------------------------------------------------------------------------
+//-----------------------------------------------------------------------------
+inline
+void JZKnob::SetMin(int MinValue)
+{
+  SetRange(MinValue, GetMax());
+}
+
+//-----------------------------------------------------------------------------
+//-----------------------------------------------------------------------------
+inline
+void JZKnob::SetMax(int MaxValue)
+{
+  SetRange(GetMin(), MaxValue);
+}
+
+//-----------------------------------------------------------------------------
+//-----------------------------------------------------------------------------
+inline
+unsigned int JZKnob::GetMinAngle() const
+{
+  return (mMaxAngle - mRange) % 360;
+}
+
+//-----------------------------------------------------------------------------
+//-----------------------------------------------------------------------------
+inline
+int JZKnob::GetMaxAngle() const
+{
+  return mMaxAngle;
+}
+
+//-----------------------------------------------------------------------------
+//-----------------------------------------------------------------------------
+inline
+int JZKnob::GetValue() const
+{
+  return mSetting;
+}
+
+#endif // !defined(JZ_KNOB_H)


Property changes on: trunk/jazz/src/Knob.h
___________________________________________________________________
Name: svn:eol-style
   + native

Modified: trunk/jazz/src/Makefile.am
===================================================================
--- trunk/jazz/src/Makefile.am	2008-03-17 05:16:19 UTC (rev 325)
+++ trunk/jazz/src/Makefile.am	2008-03-17 06:22:14 UTC (rev 326)
@@ -39,6 +39,7 @@
 JazzPlusPlusApplication.cpp \
 KeyDialog.cpp \
 KeyStringConverters.cpp \
+Knob.cpp \
 Mapper.cpp \
 MeasureChoice.cpp \
 MidiDeviceDialog.cpp \

Modified: trunk/jazz/vc8/JazzPlusPlus-VC8.vcproj
===================================================================
--- trunk/jazz/vc8/JazzPlusPlus-VC8.vcproj	2008-03-17 05:16:19 UTC (rev 325)
+++ trunk/jazz/vc8/JazzPlusPlus-VC8.vcproj	2008-03-17 06:22:14 UTC (rev 326)
@@ -453,6 +453,14 @@
 				>
 			</File>
 			<File
+				RelativePath="..\src\Knob.cpp"
+				>
+			</File>
+			<File
+				RelativePath="..\src\Knob.h"
+				>
+			</File>
+			<File
 				RelativePath="..\src\Mapper.cpp"
 				>
 			</File>


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Thread: SF.net SVN: jazzplusplus: [326] trunk/jazz

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