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#ifndef LAYOUT_H
#define LAYOUT_H
#include <windows.h>
#include "common.h"
#include "datalistview.h"
#include "pl.h"
void UpdateLayout(int w = 0, int h = 0);
/* Draggable portions of the client area, such as the split between
* two list views, are implemented in Dragger singletons.
*
* HandleDown and HandleMove are called by the relevant window
* procedures for WM_(NC)LBUTTONDOWN and WM_SETCURSOR. */
struct Dragger
{
bool HandleDown();
bool HandleMove();
protected:
bool IsDown();
bool IsDouble();
virtual bool InDragArea(int x, int y);
virtual void Drag(int x, int y);
virtual void Reset();
virtual void Done();
private:
bool m_bActive = false;
long m_time = 0;
};
/* Dragger for data list view (upper border). */
struct DlvDragger : public Dragger
{
private:
bool InDragArea(int x, int y) override;
void Drag(int x, int y) override;
void Reset() override;
void Done() override;
};
inline bool Dragger::IsDouble()
{
const long time = GetMessageTime();
const bool dbl = time-m_time <= static_cast<long>(GetDoubleClickTime());
m_time = time;
return dbl;
}
inline bool Dragger::IsDown()
{
return GetKeyState(VK_LBUTTON) & 0x8000;
}
inline bool Dragger::HandleDown()
{
extern HWND g_hWnd;
POINT pt;
require(GetRelativeCursorPos(g_hWnd, &pt));
if (!InDragArea(pt.x, pt.y)) return false;
if (IsDouble()) {
m_bActive = false;
Reset();
} else
m_bActive = true;
return m_bActive;
}
inline bool Dragger::HandleMove()
{
extern HWND g_hWnd;
POINT pt;
require(GetRelativeCursorPos(g_hWnd, &pt));
extern HCURSOR g_hcSizeNs;
bool r = true;
if (InDragArea(pt.x, pt.y))
SetCursor(g_hcSizeNs);
else
r = false;
if (!m_bActive)
return r;
Drag(pt.x, pt.y);
if (!IsDown()) {
m_bActive = false;
Done();
}
return r;
}
#endif
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