PrusaSlicer-NonPlainar/src/slic3r/GUI/GUI_Utils.hpp
2020-06-19 12:48:01 +02:00

408 lines
12 KiB
C++

#ifndef slic3r_GUI_Utils_hpp_
#define slic3r_GUI_Utils_hpp_
#include <memory>
#include <string>
#include <ostream>
#include <functional>
#include <boost/optional.hpp>
#include <wx/frame.h>
#include <wx/dialog.h>
#include <wx/event.h>
#include <wx/filedlg.h>
#include <wx/gdicmn.h>
#include <wx/panel.h>
#include <wx/dcclient.h>
#include <wx/debug.h>
#include <wx/settings.h>
#include "Event.hpp"
class wxCheckBox;
class wxTopLevelWindow;
class wxRect;
#if ENABLE_WX_3_1_3_DPI_CHANGED_EVENT
#define wxVERSION_EQUAL_OR_GREATER_THAN(major, minor, release) ((wxMAJOR_VERSION > major) || ((wxMAJOR_VERSION == major) && (wxMINOR_VERSION > minor)) || ((wxMAJOR_VERSION == major) && (wxMINOR_VERSION == minor) && (wxRELEASE_NUMBER >= release)))
#else
#define wxVERSION_EQUAL_OR_GREATER_THAN(major, minor, release) 0
#endif // ENABLE_WX_3_1_3_DPI_CHANGED_EVENT
namespace Slic3r {
namespace GUI {
#ifdef _WIN32
// USB HID attach / detach events from Windows OS.
using HIDDeviceAttachedEvent = Event<std::string>;
using HIDDeviceDetachedEvent = Event<std::string>;
wxDECLARE_EVENT(EVT_HID_DEVICE_ATTACHED, HIDDeviceAttachedEvent);
wxDECLARE_EVENT(EVT_HID_DEVICE_DETACHED, HIDDeviceDetachedEvent);
// Disk aka Volume attach / detach events from Windows OS.
using VolumeAttachedEvent = SimpleEvent;
using VolumeDetachedEvent = SimpleEvent;
wxDECLARE_EVENT(EVT_VOLUME_ATTACHED, VolumeAttachedEvent);
wxDECLARE_EVENT(EVT_VOLUME_DETACHED, VolumeDetachedEvent);
#endif /* _WIN32 */
wxTopLevelWindow* find_toplevel_parent(wxWindow *window);
void on_window_geometry(wxTopLevelWindow *tlw, std::function<void()> callback);
enum { DPI_DEFAULT = 96 };
int get_dpi_for_window(wxWindow *window);
wxFont get_default_font_for_dpi(int dpi);
#if !wxVERSION_EQUAL_OR_GREATER_THAN(3,1,3)
struct DpiChangedEvent : public wxEvent {
int dpi;
wxRect rect;
DpiChangedEvent(wxEventType eventType, int dpi, wxRect rect)
: wxEvent(0, eventType), dpi(dpi), rect(rect)
{}
virtual wxEvent *Clone() const
{
return new DpiChangedEvent(*this);
}
};
wxDECLARE_EVENT(EVT_DPI_CHANGED_SLICER, DpiChangedEvent);
#endif // !wxVERSION_EQUAL_OR_GREATER_THAN
template<class P> class DPIAware : public P
{
public:
DPIAware(wxWindow *parent, wxWindowID id, const wxString &title, const wxPoint &pos=wxDefaultPosition,
const wxSize &size=wxDefaultSize, long style=wxDEFAULT_FRAME_STYLE, const wxString &name=wxFrameNameStr)
: P(parent, id, title, pos, size, style, name)
{
int dpi = get_dpi_for_window(this);
m_scale_factor = (float)dpi / (float)DPI_DEFAULT;
m_prev_scale_factor = m_scale_factor;
m_normal_font = get_default_font_for_dpi(dpi);
/* Because of default window font is a primary display font,
* We should set correct font for window before getting em_unit value.
*/
#ifndef __WXOSX__ // Don't call SetFont under OSX to avoid name cutting in ObjectList
this->SetFont(m_normal_font);
#endif
// initialize default width_unit according to the width of the one symbol ("m") of the currently active font of this window.
#if ENABLE_WX_3_1_3_DPI_CHANGED_EVENT
m_em_unit = std::max<size_t>(10, 10.0f * m_scale_factor);
#else
m_em_unit = std::max<size_t>(10, this->GetTextExtent("m").x - 1);
#endif // ENABLE_WX_3_1_3_DPI_CHANGED_EVENT
// recalc_font();
#if wxVERSION_EQUAL_OR_GREATER_THAN(3,1,3)
this->Bind(wxEVT_DPI_CHANGED, [this](wxDPIChangedEvent& evt) {
m_scale_factor = (float)evt.GetNewDPI().x / (float)DPI_DEFAULT;
m_new_font_point_size = get_default_font_for_dpi(evt.GetNewDPI().x).GetPointSize();
if (!m_can_rescale)
return;
#if ENABLE_LAYOUT_NO_RESTART
if (m_force_rescale || is_new_scale_factor())
rescale(wxRect());
#else
if (is_new_scale_factor())
rescale(wxRect());
#endif // ENABLE_LAYOUT_NO_RESTART
});
#else
this->Bind(EVT_DPI_CHANGED_SLICER, [this](const DpiChangedEvent& evt) {
m_scale_factor = (float)evt.dpi / (float)DPI_DEFAULT;
m_new_font_point_size = get_default_font_for_dpi(evt.dpi).GetPointSize();
if (!m_can_rescale)
return;
#if ENABLE_LAYOUT_NO_RESTART
if (m_force_rescale || is_new_scale_factor())
rescale(evt.rect);
#else
if (is_new_scale_factor())
rescale(evt.rect);
#endif // ENABLE_LAYOUT_NO_RESTART
});
#endif // wxVERSION_EQUAL_OR_GREATER_THAN
this->Bind(wxEVT_MOVE_START, [this](wxMoveEvent& event)
{
event.Skip();
// Suppress application rescaling, when a MainFrame moving is not ended
m_can_rescale = false;
});
this->Bind(wxEVT_MOVE_END, [this](wxMoveEvent& event)
{
event.Skip();
m_can_rescale = is_new_scale_factor();
// If scale factor is different after moving of MainFrame ...
if (m_can_rescale)
// ... rescale application
rescale(event.GetRect());
else
// set value to _true_ in purpose of possibility of a display dpi changing from System Settings
m_can_rescale = true;
});
this->Bind(wxEVT_SYS_COLOUR_CHANGED, [this](wxSysColourChangedEvent& event)
{
event.Skip();
on_sys_color_changed();
});
}
virtual ~DPIAware() {}
float scale_factor() const { return m_scale_factor; }
float prev_scale_factor() const { return m_prev_scale_factor; }
int em_unit() const { return m_em_unit; }
// int font_size() const { return m_font_size; }
const wxFont& normal_font() const { return m_normal_font; }
#if ENABLE_LAYOUT_NO_RESTART
void enable_force_rescale() { m_force_rescale = true; }
#endif // ENABLE_LAYOUT_NO_RESTART
protected:
virtual void on_dpi_changed(const wxRect &suggested_rect) = 0;
virtual void on_sys_color_changed() {};
private:
float m_scale_factor;
int m_em_unit;
// int m_font_size;
wxFont m_normal_font;
float m_prev_scale_factor;
bool m_can_rescale{ true };
#if ENABLE_LAYOUT_NO_RESTART
bool m_force_rescale{ false };
#endif // ENABLE_LAYOUT_NO_RESTART
int m_new_font_point_size;
// void recalc_font()
// {
// wxClientDC dc(this);
// const auto metrics = dc.GetFontMetrics();
// m_font_size = metrics.height;
// m_em_unit = metrics.averageWidth;
// }
// check if new scale is differ from previous
bool is_new_scale_factor() const { return fabs(m_scale_factor - m_prev_scale_factor) > 0.001; }
// function for a font scaling of the window
void scale_win_font(wxWindow *window, const int font_point_size)
{
wxFont new_font(window->GetFont());
new_font.SetPointSize(font_point_size);
window->SetFont(new_font);
}
// recursive function for scaling fonts for all controls in Window
void scale_controls_fonts(wxWindow *window, const int font_point_size)
{
auto children = window->GetChildren();
for (auto child : children) {
scale_controls_fonts(child, font_point_size);
scale_win_font(child, font_point_size);
}
window->Layout();
}
void rescale(const wxRect &suggested_rect)
{
this->Freeze();
#if ENABLE_LAYOUT_NO_RESTART && wxVERSION_EQUAL_OR_GREATER_THAN(3,1,3)
if (m_force_rescale) {
#endif // ENABLE_LAYOUT_NO_RESTART
// rescale fonts of all controls
scale_controls_fonts(this, m_new_font_point_size);
// rescale current window font
scale_win_font(this, m_new_font_point_size);
#if ENABLE_LAYOUT_NO_RESTART && wxVERSION_EQUAL_OR_GREATER_THAN(3,1,3)
m_force_rescale = false;
}
#endif // ENABLE_LAYOUT_NO_RESTART
// set normal application font as a current window font
m_normal_font = this->GetFont();
// update em_unit value for new window font
#if ENABLE_WX_3_1_3_DPI_CHANGED_EVENT
m_em_unit = std::max<int>(10, 10.0f * m_scale_factor);
#else
m_em_unit = std::max<size_t>(10, this->GetTextExtent("m").x - 1);
#endif // ENABLE_WX_3_1_3_DPI_CHANGED_EVENT
// rescale missed controls sizes and images
on_dpi_changed(suggested_rect);
this->Layout();
this->Thaw();
// reset previous scale factor from current scale factor value
m_prev_scale_factor = m_scale_factor;
}
};
typedef DPIAware<wxFrame> DPIFrame;
typedef DPIAware<wxDialog> DPIDialog;
class EventGuard
{
// This is a RAII-style smart-ptr-like guard that will bind any event to any event handler
// and unbind it as soon as it goes out of scope or unbind() is called.
// This can be used to solve the annoying problem of wx events being delivered to freed objects.
private:
// This is a way to type-erase both the event type as well as the handler:
struct EventStorageBase {
virtual ~EventStorageBase() {}
};
template<class EvTag, class Fun>
struct EventStorageFun : EventStorageBase {
wxEvtHandler *emitter;
EvTag tag;
Fun fun;
EventStorageFun(wxEvtHandler *emitter, const EvTag &tag, Fun fun)
: emitter(emitter)
, tag(tag)
, fun(std::move(fun))
{
emitter->Bind(this->tag, this->fun);
}
virtual ~EventStorageFun() { emitter->Unbind(tag, fun); }
};
template<typename EvTag, typename Class, typename EvArg, typename EvHandler>
struct EventStorageMethod : EventStorageBase {
typedef void(Class::* MethodPtr)(EvArg &);
wxEvtHandler *emitter;
EvTag tag;
MethodPtr method;
EvHandler *handler;
EventStorageMethod(wxEvtHandler *emitter, const EvTag &tag, MethodPtr method, EvHandler *handler)
: emitter(emitter)
, tag(tag)
, method(method)
, handler(handler)
{
emitter->Bind(tag, method, handler);
}
virtual ~EventStorageMethod() { emitter->Unbind(tag, method, handler); }
};
std::unique_ptr<EventStorageBase> event_storage;
public:
EventGuard() {}
EventGuard(const EventGuard&) = delete;
EventGuard(EventGuard &&other) : event_storage(std::move(other.event_storage)) {}
template<class EvTag, class Fun>
EventGuard(wxEvtHandler *emitter, const EvTag &tag, Fun fun)
:event_storage(new EventStorageFun<EvTag, Fun>(emitter, tag, std::move(fun)))
{}
template<typename EvTag, typename Class, typename EvArg, typename EvHandler>
EventGuard(wxEvtHandler *emitter, const EvTag &tag, void(Class::* method)(EvArg &), EvHandler *handler)
:event_storage(new EventStorageMethod<EvTag, Class, EvArg, EvHandler>(emitter, tag, method, handler))
{}
EventGuard& operator=(const EventGuard&) = delete;
EventGuard& operator=(EventGuard &&other)
{
event_storage = std::move(other.event_storage);
return *this;
}
void unbind() { event_storage.reset(nullptr); }
explicit operator bool() const { return !!event_storage; }
};
class CheckboxFileDialog : public wxFileDialog
{
public:
CheckboxFileDialog(wxWindow *parent,
const wxString &checkbox_label,
bool checkbox_value,
const wxString &message = wxFileSelectorPromptStr,
const wxString &default_dir = wxEmptyString,
const wxString &default_file = wxEmptyString,
const wxString &wildcard = wxFileSelectorDefaultWildcardStr,
long style = wxFD_DEFAULT_STYLE,
const wxPoint &pos = wxDefaultPosition,
const wxSize &size = wxDefaultSize,
const wxString &name = wxFileDialogNameStr
);
bool get_checkbox_value() const;
private:
struct ExtraPanel : public wxPanel
{
wxCheckBox *cbox;
ExtraPanel(wxWindow *parent);
static wxWindow* ctor(wxWindow *parent);
};
wxString checkbox_label;
};
class WindowMetrics
{
private:
wxRect rect;
bool maximized;
WindowMetrics() : maximized(false) {}
public:
static WindowMetrics from_window(wxTopLevelWindow *window);
static boost::optional<WindowMetrics> deserialize(const std::string &str);
const wxRect& get_rect() const { return rect; }
bool get_maximized() const { return maximized; }
void sanitize_for_display(const wxRect &screen_rect);
std::string serialize() const;
};
std::ostream& operator<<(std::ostream &os, const WindowMetrics& metrics);
}}
#endif