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Implement reset on double click on the zoomer value
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,75 @@ | ||
| #include "SliderCtrl.h" | ||
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| #include <string> | ||
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| SliderCtrl::SliderCtrl(const SliderRange& sliderRange) | ||
| : m_sliderRange(sliderRange) | ||
| { | ||
| } | ||
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| SliderCtrl::~SliderCtrl() | ||
| { | ||
| // Restore the original window procedure on cleanup | ||
| SetWindowLongPtr(m_hSelf, GWLP_WNDPROC, (LONG_PTR)m_oldSliderProc); | ||
| } | ||
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| void SliderCtrl::OnInit(HWND hParent, int sliderID, int sliderInfoID) | ||
| { | ||
| m_hParent = hParent; | ||
| m_hSelf = GetDlgItem(m_hParent, sliderID); | ||
| m_hSelfInfo = GetDlgItem(m_hParent, sliderInfoID); | ||
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| // Set slider range and initial position | ||
| SendMessage(m_hSelf, TBM_SETRANGE, TRUE, MAKELPARAM(m_sliderRange.m_nMinZoom, m_sliderRange.m_nMaxZoom)); | ||
| SendMessage(m_hSelf, TBM_SETPOS, TRUE, m_sliderRange.m_nDefault); | ||
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| UpdateInfo(m_sliderRange.m_nDefault); | ||
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| // Subclass the slider control to handle double-click events | ||
| m_oldSliderProc = reinterpret_cast<WNDPROC>(SetWindowLongPtr(m_hSelfInfo, GWLP_WNDPROC, reinterpret_cast<LONG_PTR>(runWinProc))); | ||
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| // Save this instance for access in the static window procedure | ||
| SetWindowLongPtr(m_hSelfInfo, GWLP_USERDATA, reinterpret_cast<LONG_PTR>(this)); | ||
| } | ||
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| auto SliderCtrl::GetPosition() const -> int | ||
| { | ||
| int pos = static_cast<int>(SendMessage(m_hSelf, TBM_GETPOS, 0, 0)); | ||
| return pos; | ||
| } | ||
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| void SliderCtrl::SetPosition(int pos) const | ||
| { | ||
| // Set slider position | ||
| SendMessage(m_hSelf, TBM_SETPOS, TRUE, pos); | ||
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| // Set slider position in text value | ||
| UpdateInfo(pos); | ||
| } | ||
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| void SliderCtrl::UpdateInfo(int zoomPercentage) const | ||
| { | ||
| std::wstring sliderInfoText = std::to_wstring(zoomPercentage) + L"%"; | ||
| SetWindowText(m_hSelfInfo, sliderInfoText.c_str()); | ||
| } | ||
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| LRESULT SliderCtrl::runWinProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam) | ||
| { | ||
| SliderCtrl* pThis = reinterpret_cast<SliderCtrl*>(GetWindowLongPtr(hWnd, GWLP_USERDATA)); | ||
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| if (pThis) | ||
| { | ||
| if (message == WM_LBUTTONDBLCLK) | ||
| { | ||
| // Reset slider to 100% on double-click | ||
| // Also notify its parent to adjust tree view as well | ||
| pThis->SetPosition(100); | ||
| SendMessage(pThis->m_hParent, WM_HSCROLL, NULL, reinterpret_cast<LPARAM>(pThis->m_hSelf)); | ||
| } | ||
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| // Call the original window procedure for other messages | ||
| return CallWindowProc(pThis->m_oldSliderProc, hWnd, message, wParam, lParam); | ||
| } | ||
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| return FALSE; | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,52 @@ | ||
| #pragma once | ||
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| #include <Windows.h> | ||
| #include <CommCtrl.h> | ||
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| struct SliderRange | ||
| { | ||
| int m_nDefault = 100; | ||
| int m_nMinZoom = 80; | ||
| int m_nMaxZoom = 250; | ||
| }; // namespace SliderRange | ||
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| class SliderCtrl | ||
| { | ||
| HWND m_hParent = nullptr; | ||
| HWND m_hSelf = nullptr; | ||
| HWND m_hSelfInfo = nullptr; | ||
| HWND m_hTreeView = nullptr; | ||
| WNDPROC m_oldSliderProc = nullptr; | ||
| const SliderRange m_sliderRange {}; | ||
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| public: | ||
| explicit SliderCtrl(const SliderRange& sliderRange = {}); | ||
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| ~SliderCtrl(); | ||
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| void OnInit(HWND hParent, int sliderID, int sliderInfoID); | ||
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| HWND GetSliderHandle() const | ||
| { | ||
| return m_hSelf; | ||
| } | ||
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| HWND GetSliderInfoHandle() const | ||
| { | ||
| return m_hSelfInfo; | ||
| } | ||
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| auto GetRange() const -> const SliderRange& | ||
| { | ||
| return m_sliderRange; | ||
| } | ||
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| auto GetPosition() const -> int; | ||
| void SetPosition(int pos) const; | ||
| void UpdateInfo(int zoomPercentage) const; | ||
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| private: | ||
| // Static window procedure for the slider | ||
| static INT_PTR CALLBACK runWinProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam); | ||
| }; |
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