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127 lines
3.9 KiB
C++
127 lines
3.9 KiB
C++
// Copyright 2016 Dolphin Emulator Project
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// Licensed under GPLv2+
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// Refer to the license.txt file included.
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#include <wx/utils.h>
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#include "DolphinWX/DolphinSlider.h"
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#ifdef __WXMSW__
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#define WIN32_LEAN_AND_MEAN 1
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// clang-format off
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#include <Windows.h>
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#include <CommCtrl.h>
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// clang-format on
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#endif
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static constexpr int SLIDER_MIN_LENGTH = 100;
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DolphinSlider::DolphinSlider() = default;
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DolphinSlider::~DolphinSlider() = default;
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bool DolphinSlider::Create(wxWindow* parent, wxWindowID id, int value, int min_val, int max_val,
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const wxPoint& pos, const wxSize& size, long style,
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const wxValidator& validator, const wxString& name)
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{
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// Sanitize the style flags.
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// We don't want any label flags because those break DPI scaling on wxMSW,
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// wxWidgets will internally lock the height of the slider to 32 pixels.
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style &= ~wxSL_LABELS;
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return wxSlider::Create(parent, id, value, min_val, max_val, pos, size, style, validator, name);
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}
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wxSize DolphinSlider::DoGetBestClientSize() const
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{
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#ifdef __WXMSW__
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int ticks = 0;
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int default_length = FromDIP(SLIDER_MIN_LENGTH);
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if (HasFlag(wxSL_TICKS))
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{
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// NOTE: Ticks do not scale at all (on Win7)
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default_length += 4;
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ticks = 6;
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}
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int metric = 0;
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{
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// We need to determine the maximum thumb size because unfortunately the thumb size
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// is controlled by the theme so may have a varying maximum size limit.
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// NOTE: We can't use ourself because we're const so we can't change our size.
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// NOTE: This is less inefficient then it seems, DoGetBestSize() is only called once
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// per instance and cached until InvalidateBestSize() is called.
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wxSlider* helper = new wxSlider(GetParent(), wxID_ANY, GetValue(), GetMin(), GetMax(),
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wxDefaultPosition, FromDIP(wxSize(100, 100)), GetWindowStyle());
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::RECT r{};
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::SendMessageW(reinterpret_cast<HWND>(helper->GetHWND()), TBM_GETTHUMBRECT, 0,
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reinterpret_cast<LPARAM>(&r));
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helper->Destroy();
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// Breakdown metrics
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int computed_size;
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int scroll_size;
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if (HasFlag(wxSL_VERTICAL))
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{
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// Trackbar thumb does not directly touch the edge, we add the padding
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// a second time to pad the other edge to make it symmetric.
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computed_size = static_cast<int>(r.right + r.left);
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scroll_size = ::GetSystemMetrics(SM_CXVSCROLL);
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}
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else
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{
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computed_size = static_cast<int>(r.bottom + r.top);
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scroll_size = ::GetSystemMetrics(SM_CYHSCROLL);
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}
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// This is based on how Microsoft calculates trackbar sizes in the .Net Framework
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// when using automatic sizing in WinForms.
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int max = scroll_size * 2;
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metric = wxClip(computed_size, scroll_size, max);
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}
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if (HasFlag(wxSL_VERTICAL))
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return wxSize(metric + ticks, default_length);
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return wxSize(default_length, metric + ticks);
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#else
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wxSize base_size = wxSlider::DoGetBestClientSize();
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// If the base class is not using DoGetBestClientSize(), fallback to DoGetBestSize()
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if (base_size == wxDefaultSize)
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return wxDefaultSize;
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return CorrectMinSize(base_size);
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#endif
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}
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wxSize DolphinSlider::DoGetBestSize() const
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{
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return CorrectMinSize(wxSlider::DoGetBestSize());
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}
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wxSize DolphinSlider::CorrectMinSize(wxSize size) const
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{
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wxSize default_length = FromDIP(wxSize(SLIDER_MIN_LENGTH, SLIDER_MIN_LENGTH));
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// GTK Styles sometimes don't return a default length.
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// NOTE: Vertical is the dominant flag if both are set.
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if (HasFlag(wxSL_VERTICAL))
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{
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if (size.GetHeight() < default_length.GetHeight())
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{
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size.SetHeight(default_length.GetHeight());
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}
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}
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else if (size.GetWidth() < default_length.GetWidth())
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{
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size.SetWidth(default_length.GetWidth());
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}
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return size;
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}
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#ifdef __WXMSW__
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WXLRESULT DolphinSlider::MSWWindowProc(WXUINT msg, WXWPARAM wp, WXLPARAM lp)
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{
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if (msg == WM_THEMECHANGED)
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InvalidateBestSize();
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return wxSlider::MSWWindowProc(msg, wp, lp);
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}
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#endif
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