317 lines
8.9 KiB
C++
317 lines
8.9 KiB
C++
#ifndef slic3r_GUI_Utils_hpp_
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#define slic3r_GUI_Utils_hpp_
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#include <memory>
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#include <string>
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#include <ostream>
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#include <functional>
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#include <boost/optional.hpp>
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#include <wx/frame.h>
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#include <wx/dialog.h>
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#include <wx/event.h>
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#include <wx/filedlg.h>
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#include <wx/gdicmn.h>
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#include <wx/panel.h>
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#include <wx/dcclient.h>
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#include <wx/debug.h>
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#include <wx/settings.h>
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class wxCheckBox;
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class wxTopLevelWindow;
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class wxRect;
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namespace Slic3r {
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namespace GUI {
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wxTopLevelWindow* find_toplevel_parent(wxWindow *window);
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void on_window_geometry(wxTopLevelWindow *tlw, std::function<void()> callback);
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enum { DPI_DEFAULT = 96 };
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int get_dpi_for_window(wxWindow *window);
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wxFont get_default_font_for_dpi(int dpi);
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struct DpiChangedEvent : public wxEvent {
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int dpi;
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wxRect rect;
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DpiChangedEvent(wxEventType eventType, int dpi, wxRect rect)
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: wxEvent(0, eventType), dpi(dpi), rect(rect)
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{}
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virtual wxEvent *Clone() const
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{
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return new DpiChangedEvent(*this);
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}
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};
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wxDECLARE_EVENT(EVT_DPI_CHANGED, DpiChangedEvent);
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template<class P> class DPIAware : public P
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{
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public:
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DPIAware(wxWindow *parent, wxWindowID id, const wxString &title, const wxPoint &pos=wxDefaultPosition,
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const wxSize &size=wxDefaultSize, long style=wxDEFAULT_FRAME_STYLE, const wxString &name=wxFrameNameStr)
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: P(parent, id, title, pos, size, style, name)
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{
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int dpi = get_dpi_for_window(this);
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m_scale_factor = (float)dpi / (float)DPI_DEFAULT;
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m_prev_scale_factor = m_scale_factor;
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m_normal_font = get_default_font_for_dpi(dpi);
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// initialize default width_unit according to the width of the one symbol ("m") of the currently active font of this window.
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m_em_unit = std::max<size_t>(10, this->GetTextExtent("m").x - 1);
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// recalc_font();
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this->Bind(EVT_DPI_CHANGED, [this](const DpiChangedEvent &evt) {
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m_scale_factor = (float)evt.dpi / (float)DPI_DEFAULT;
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if (!m_can_rescale)
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return;
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if (is_new_scale_factor())
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rescale(evt.rect);
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});
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this->Bind(wxEVT_MOVE_START, [this](wxMoveEvent& event)
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{
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event.Skip();
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// Suppress application rescaling, when a MainFrame moving is not ended
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m_can_rescale = false;
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});
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this->Bind(wxEVT_MOVE_END, [this](wxMoveEvent& event)
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{
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event.Skip();
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m_can_rescale = is_new_scale_factor();
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// If scale factor is different after moving of MainFrame ...
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if (m_can_rescale)
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// ... rescale application
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rescale(event.GetRect());
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else
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// set value to _true_ in purpose of possibility of a display dpi changing from System Settings
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m_can_rescale = true;
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});
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}
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virtual ~DPIAware() {}
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float scale_factor() const { return m_scale_factor; }
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float prev_scale_factor() const { return m_prev_scale_factor; }
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int em_unit() const { return m_em_unit; }
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// int font_size() const { return m_font_size; }
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const wxFont& normal_font() const { return m_normal_font; }
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protected:
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virtual void on_dpi_changed(const wxRect &suggested_rect) = 0;
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private:
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float m_scale_factor;
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int m_em_unit;
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// int m_font_size;
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wxFont m_normal_font;
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float m_prev_scale_factor;
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bool m_can_rescale{ true };
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// void recalc_font()
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// {
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// wxClientDC dc(this);
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// const auto metrics = dc.GetFontMetrics();
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// m_font_size = metrics.height;
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// m_em_unit = metrics.averageWidth;
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// }
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// check if new scale is differ from previous
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bool is_new_scale_factor() const { return fabs(m_scale_factor - m_prev_scale_factor) > 0.001; }
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// recursive function for scaling fonts for all controls in Window
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void scale_controls_fonts(wxWindow *window, const float scale_f)
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{
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auto children = window->GetChildren();
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for (auto child : children) {
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scale_controls_fonts(child, scale_f);
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child->SetFont(child->GetFont().Scaled(scale_f));
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}
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window->Layout();
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}
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void rescale(const wxRect &suggested_rect)
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{
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this->Freeze();
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const float relative_scale_factor = m_scale_factor / m_prev_scale_factor;
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// rescale fonts of all controls
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scale_controls_fonts(this, relative_scale_factor);
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this->SetFont(this->GetFont().Scaled(relative_scale_factor));
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// rescale normal_font value
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m_normal_font = m_normal_font.Scaled(relative_scale_factor);
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// An analog of em_unit value from GUI_App.
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m_em_unit = std::max<size_t>(10, 10 * m_scale_factor);
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// rescale missed controls sizes and images
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on_dpi_changed(suggested_rect);
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this->Layout();
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this->Thaw();
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// reset previous scale factor from current scale factor value
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m_prev_scale_factor = m_scale_factor;
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}
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};
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typedef DPIAware<wxFrame> DPIFrame;
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typedef DPIAware<wxDialog> DPIDialog;
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class EventGuard
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{
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// This is a RAII-style smart-ptr-like guard that will bind any event to any event handler
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// and unbind it as soon as it goes out of scope or unbind() is called.
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// This can be used to solve the annoying problem of wx events being delivered to freed objects.
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private:
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// This is a way to type-erase both the event type as well as the handler:
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struct EventStorageBase {
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virtual ~EventStorageBase() {}
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};
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template<class EvTag, class Fun>
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struct EventStorageFun : EventStorageBase {
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wxEvtHandler *emitter;
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EvTag tag;
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Fun fun;
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EventStorageFun(wxEvtHandler *emitter, const EvTag &tag, Fun fun)
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: emitter(emitter)
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, tag(tag)
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, fun(std::move(fun))
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{
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emitter->Bind(this->tag, this->fun);
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}
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virtual ~EventStorageFun() { emitter->Unbind(tag, fun); }
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};
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template<typename EvTag, typename Class, typename EvArg, typename EvHandler>
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struct EventStorageMethod : EventStorageBase {
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typedef void(Class::* MethodPtr)(EvArg &);
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wxEvtHandler *emitter;
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EvTag tag;
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MethodPtr method;
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EvHandler *handler;
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EventStorageMethod(wxEvtHandler *emitter, const EvTag &tag, MethodPtr method, EvHandler *handler)
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: emitter(emitter)
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, tag(tag)
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, method(method)
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, handler(handler)
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{
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emitter->Bind(tag, method, handler);
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}
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virtual ~EventStorageMethod() { emitter->Unbind(tag, method, handler); }
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};
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std::unique_ptr<EventStorageBase> event_storage;
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public:
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EventGuard() {}
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EventGuard(const EventGuard&) = delete;
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EventGuard(EventGuard &&other) : event_storage(std::move(other.event_storage)) {}
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template<class EvTag, class Fun>
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EventGuard(wxEvtHandler *emitter, const EvTag &tag, Fun fun)
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:event_storage(new EventStorageFun<EvTag, Fun>(emitter, tag, std::move(fun)))
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{}
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template<typename EvTag, typename Class, typename EvArg, typename EvHandler>
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EventGuard(wxEvtHandler *emitter, const EvTag &tag, void(Class::* method)(EvArg &), EvHandler *handler)
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:event_storage(new EventStorageMethod<EvTag, Class, EvArg, EvHandler>(emitter, tag, method, handler))
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{}
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EventGuard& operator=(const EventGuard&) = delete;
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EventGuard& operator=(EventGuard &&other)
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{
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event_storage = std::move(other.event_storage);
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return *this;
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}
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void unbind() { event_storage.reset(nullptr); }
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explicit operator bool() const { return !!event_storage; }
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};
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class CheckboxFileDialog : public wxFileDialog
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{
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public:
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CheckboxFileDialog(wxWindow *parent,
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const wxString &checkbox_label,
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bool checkbox_value,
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const wxString &message = wxFileSelectorPromptStr,
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const wxString &default_dir = wxEmptyString,
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const wxString &default_file = wxEmptyString,
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const wxString &wildcard = wxFileSelectorDefaultWildcardStr,
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long style = wxFD_DEFAULT_STYLE,
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const wxPoint &pos = wxDefaultPosition,
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const wxSize &size = wxDefaultSize,
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const wxString &name = wxFileDialogNameStr
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);
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bool get_checkbox_value() const;
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private:
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struct ExtraPanel : public wxPanel
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{
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wxCheckBox *cbox;
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ExtraPanel(wxWindow *parent);
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static wxWindow* ctor(wxWindow *parent);
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};
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wxString checkbox_label;
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};
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class WindowMetrics
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{
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private:
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wxRect rect;
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bool maximized;
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WindowMetrics() : maximized(false) {}
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public:
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static WindowMetrics from_window(wxTopLevelWindow *window);
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static boost::optional<WindowMetrics> deserialize(const std::string &str);
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wxRect get_rect() const { return rect; }
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bool get_maximized() const { return maximized; }
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void sanitize_for_display(const wxRect &screen_rect);
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std::string serialize() const;
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};
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std::ostream& operator<<(std::ostream &os, const WindowMetrics& metrics);
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}}
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#endif
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