mirror of
https://github.com/hajimehoshi/ebiten.git
synced 2024-09-20 05:12:18 +02:00
149 lines
4.1 KiB
Go
149 lines
4.1 KiB
Go
// Copyright 2022 The Ebiten Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package ui
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// #cgo CFLAGS: -x objective-c
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// #cgo LDFLAGS: -framework Foundation -framework UIKit
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//
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// #import <UIKit/UIKit.h>
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//
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// static void displayInfoOnMainThread(float* width, float* height, float* scale, UIView* view) {
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// *width = 0;
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// *height = 0;
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// *scale = 1;
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// UIWindow* window = view.window;
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// if (!window) {
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// return;
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// }
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// UIWindowScene* scene = window.windowScene;
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// if (!scene) {
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// return;
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// }
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// CGRect bounds = scene.screen.bounds;
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// *width = bounds.size.width;
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// *height = bounds.size.height;
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// *scale = scene.screen.nativeScale;
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// }
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//
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// static void displayInfo(float* width, float* height, float* scale, uintptr_t viewPtr) {
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// *width = 0;
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// *height = 0;
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// *scale = 1;
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// if (!viewPtr) {
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// return;
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// }
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// UIView* view = (__bridge UIView*)(void*)viewPtr;
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// if ([NSThread isMainThread]) {
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// displayInfoOnMainThread(width, height, scale, view);
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// return;
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// }
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// __block float w, h, s;
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// dispatch_sync(dispatch_get_main_queue(), ^{
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// displayInfoOnMainThread(&w, &h, &s, view);
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// });
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// *width = w;
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// *height = h;
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// *scale = s;
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// }
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import "C"
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import (
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"errors"
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"fmt"
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"github.com/hajimehoshi/ebiten/v2/internal/graphicsdriver"
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"github.com/hajimehoshi/ebiten/v2/internal/graphicsdriver/metal"
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"github.com/hajimehoshi/ebiten/v2/internal/graphicsdriver/opengl"
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)
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type graphicsDriverCreatorImpl struct {
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colorSpace graphicsdriver.ColorSpace
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}
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func (g *graphicsDriverCreatorImpl) newAuto() (graphicsdriver.Graphics, GraphicsLibrary, error) {
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m, err1 := g.newMetal()
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if err1 == nil {
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return m, GraphicsLibraryMetal, nil
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}
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o, err2 := g.newOpenGL()
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if err2 == nil {
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return o, GraphicsLibraryMetal, nil
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}
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return nil, GraphicsLibraryUnknown, fmt.Errorf("ui: failed to choose graphics drivers: Metal: %v, OpenGL: %v", err1, err2)
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}
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func (g *graphicsDriverCreatorImpl) newOpenGL() (graphicsdriver.Graphics, error) {
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return opengl.NewGraphics()
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}
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func (*graphicsDriverCreatorImpl) newDirectX() (graphicsdriver.Graphics, error) {
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return nil, errors.New("ui: DirectX is not supported in this environment")
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}
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func (g *graphicsDriverCreatorImpl) newMetal() (graphicsdriver.Graphics, error) {
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return metal.NewGraphics(g.colorSpace)
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}
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func (*graphicsDriverCreatorImpl) newPlayStation5() (graphicsdriver.Graphics, error) {
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return nil, errors.New("ui: PlayStation 5 is not supported in this environment")
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}
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func (u *UserInterface) SetUIView(uiview uintptr) error {
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u.uiView.Store(uiview)
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select {
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case err := <-u.errCh:
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return err
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case <-u.graphicsLibraryInitCh:
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}
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// This function should be called only when the graphics library is Metal.
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if g, ok := u.graphicsDriver.(interface{ SetUIView(uintptr) }); ok {
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g.SetUIView(uiview)
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}
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return nil
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}
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func (u *UserInterface) IsGL() (bool, error) {
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select {
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case err := <-u.errCh:
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return false, err
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case <-u.graphicsLibraryInitCh:
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}
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return u.GraphicsLibrary() == GraphicsLibraryOpenGL, nil
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}
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func dipToNativePixels(x float64, scale float64) float64 {
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return x
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}
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func dipFromNativePixels(x float64, scale float64) float64 {
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return x
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}
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func (u *UserInterface) displayInfo() (int, int, float64, bool) {
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view := u.uiView.Load()
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if view == 0 {
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return 0, 0, 1, false
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}
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var cWidth, cHeight, cScale C.float
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C.displayInfo(&cWidth, &cHeight, &cScale, C.uintptr_t(view))
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scale := float64(cScale)
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width := int(dipFromNativePixels(float64(cWidth), scale))
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height := int(dipFromNativePixels(float64(cHeight), scale))
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return width, height, scale, true
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}
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