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C++: Api changes in the WindowAdapter

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- s/physical_size/size/ (consistant with the slint::Window API)
 - remove const of virtual function  (they don't need to be const and
   make implementation potentially easier)
 - Move the WindowProperties in it
This commit is contained in:
Olivier Goffart 2023-08-30 13:40:02 +02:00 • committed by Olivier Goffart
parent 465fe20478
commit c47e6cd029
5 changed files with 83 additions and 87 deletions
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141
api/cpp/include/slint-platform.h
View file

@ -45,63 +45,6 @@ namespace slint {
/// Another important class to subclass is the WindowAdapter.
namespace platform {
/// This struct contains getters that provide access to properties of the Window
/// element, and is used with WindowAdapter::update_window_properties().
struct WindowProperties
{
/// Returns the title of the window.
SharedString title() const
{
SharedString out;
cbindgen_private::slint_window_properties_get_title(this, &out);
return out;
}
/// Returns the background brush of the window.
Brush background() const
{
Brush out;
cbindgen_private::slint_window_properties_get_background(this, &out);
return out;
}
/// This struct describes the layout constraints of a window.
///
/// It is the return value of WindowProperties::layout_constraints().
struct LayoutConstraints
{
/// This represents the minimum size the window can be. If this is set, the window should
/// not be able to be resized smaller than this size. If it is left unset, there is no
/// minimum size.
std::optional<LogicalSize> min;
// This represents the maximum size the window can be. If this is set, the window should
/// not be able to be resized larger than this size. If it is left unset, there is no
/// maximum size.
std::optional<LogicalSize> max;
/// This represents the preferred size of the window. This is the size the window
/// should have by default
LogicalSize preferred;
};
/// Returns the layout constraints of the window
LayoutConstraints layout_constraints() const
{
auto lc = cbindgen_private::slint_window_properties_get_layout_constraints(this);
return LayoutConstraints {
.min = lc.has_min ? std::optional(LogicalSize(lc.min)) : std::nullopt,
.max = lc.has_max ? std::optional(LogicalSize(lc.max)) : std::nullopt,
.preferred = LogicalSize(lc.preferred)
};
}
private:
/// This struct is opaque and cannot be constructed by C++
WindowProperties() = delete;
~WindowProperties() = delete;
WindowProperties(const WindowProperties &) = delete;
WindowProperties &operator=(const WindowProperties &) = delete;
};
/// Internal interface for a renderer for use with the WindowAdapter.
///
/// This class is not intended to be re-implemented. In places where this class is required, use
@ -134,7 +77,7 @@ private:
/// Window::dispatch_close_requested_event().
///
/// - Slint sends requests to change visibility, position, size, etc. via virtual functions such as
/// set_visible(), set_physical_size(), set_position(), or update_window_properties().
/// set_visible(), set_size(), set_position(), or update_window_properties().
/// Re-implement these functions and delegate the requests to the windowing system.
///
/// If the implementation of this bi-directional message passing protocol is incomplete, the user
@ -151,7 +94,7 @@ private:
/// NativeHandle m_native_window; // a handle to the native window
/// public:
/// void request_redraw() override { m_native_window.refresh(); }
/// slint::PhysicalSize physical_size() const override {
/// slint::PhysicalSize size() const override {
/// return slint::PhysicalSize({m_native_window.width, m_native_window.height});
/// }
/// slint::platform::AbstractRenderer &renderer() override { return m_renderer; }
@ -190,7 +133,7 @@ class WindowAdapter
cbindgen_private::WindowAdapterRcOpaque initialize()
{
cbindgen_private::slint_window_adapter_new(
this, [](void *wa) { delete reinterpret_cast<const WindowAdapter *>(wa); },
this, [](void *wa) { delete reinterpret_cast<WindowAdapter *>(wa); },
[](void *wa) {
return reinterpret_cast<WindowAdapter *>(wa)->renderer().renderer_handle();
},
@ -199,17 +142,18 @@ class WindowAdapter
},
[](void *wa) { reinterpret_cast<WindowAdapter *>(wa)->request_redraw(); },
[](void *wa) -> cbindgen_private::IntSize {
return reinterpret_cast<const WindowAdapter *>(wa)->physical_size();
return reinterpret_cast<WindowAdapter *>(wa)->size();
},
[](void *wa, cbindgen_private::IntSize size) {
reinterpret_cast<WindowAdapter *>(wa)->set_physical_size(
reinterpret_cast<WindowAdapter *>(wa)->set_size(
slint::PhysicalSize({ size.width, size.height }));
},
[](void *wa, const WindowProperties *p) {
reinterpret_cast<WindowAdapter *>(wa)->update_window_properties(*p);
[](void *wa, const cbindgen_private::WindowProperties *p) {
reinterpret_cast<WindowAdapter *>(wa)->update_window_properties(
*reinterpret_cast<const WindowProperties *>(p));
},
[](void *wa, cbindgen_private::Point2D<int32_t> *point) -> bool {
if (auto pos = reinterpret_cast<const WindowAdapter *>(wa)->position()) {
if (auto pos = reinterpret_cast<WindowAdapter *>(wa)->position()) {
*point = *pos;
return true;
} else {
@ -258,10 +202,10 @@ public:
/// This function should sent the size to the Windowing system. If the window size actually
/// changes, you should call slint::Window::dispatch_resize_event to propagate the new size
/// to the slint view.
virtual void set_physical_size(slint::PhysicalSize) { }
virtual void set_size(slint::PhysicalSize) { }
/// Returns the actual physical size of the window
virtual slint::PhysicalSize physical_size() const = 0;
virtual slint::PhysicalSize size() = 0;
/// Sets the position of the window on the screen, in physical screen coordinates and including
/// a window frame (if present).
@ -277,7 +221,68 @@ public:
/// The default implementation returns std::nullopt.
///
/// Called from slint::Window::position().
virtual std::optional<slint::PhysicalPosition> position() const { return std::nullopt; }
virtual std::optional<slint::PhysicalPosition> position() { return std::nullopt; }
/// This struct contains getters that provide access to properties of the Window
/// element, and is used with WindowAdapter::update_window_properties().
struct WindowProperties
{
/// Returns the title of the window.
SharedString title() const
{
SharedString out;
cbindgen_private::slint_window_properties_get_title(inner(), &out);
return out;
}
/// Returns the background brush of the window.
Brush background() const
{
Brush out;
cbindgen_private::slint_window_properties_get_background(inner(), &out);
return out;
}
/// This struct describes the layout constraints of a window.
///
/// It is the return value of WindowProperties::layout_constraints().
struct LayoutConstraints
{
/// This represents the minimum size the window can be. If this is set, the window
/// should not be able to be resized smaller than this size. If it is left unset, there
/// is no minimum size.
std::optional<LogicalSize> min;
/// This represents the maximum size the window can be. If this is set, the window
/// should not be able to be resized larger than this size. If it is left unset, there
/// is no maximum size.
std::optional<LogicalSize> max;
/// This represents the preferred size of the window. This is the size the window
/// should have by default
LogicalSize preferred;
};
/// Returns the layout constraints of the window
LayoutConstraints layout_constraints() const
{
auto lc = cbindgen_private::slint_window_properties_get_layout_constraints(inner());
return LayoutConstraints {
.min = lc.has_min ? std::optional(LogicalSize(lc.min)) : std::nullopt,
.max = lc.has_max ? std::optional(LogicalSize(lc.max)) : std::nullopt,
.preferred = LogicalSize(lc.preferred)
};
}
private:
/// This struct is opaque and cannot be constructed by C++
WindowProperties() = delete;
~WindowProperties() = delete;
WindowProperties(const WindowProperties &) = delete;
WindowProperties &operator=(const WindowProperties &) = delete;
const cbindgen_private::WindowProperties *inner() const
{
return reinterpret_cast<const cbindgen_private::WindowProperties *>(this);
}
};
/// Re-implement this function to update the properties such as window title or layout
/// constraints.