mirror of
https://github.com/hajimehoshi/ebiten.git
synced 2024-11-15 07:27:32 +01:00
506 lines
11 KiB
Go
506 lines
11 KiB
Go
// SPDX-License-Identifier: Apache-2.0
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// SPDX-FileCopyrightText: 2002-2006 Marcus Geelnard
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// SPDX-FileCopyrightText: 2006-2019 Camilla Löwy <elmindreda@glfw.org>
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// SPDX-FileCopyrightText: 2022 The Ebitengine Authors
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package glfw
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import (
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"fmt"
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"math"
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)
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const stick = 3
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func (w *Window) inputKey(key Key, scancode int, action Action, mods ModifierKey) {
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if key >= 0 && key <= KeyLast {
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var repeated bool
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if action == Release && w.keys[key] == Release {
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return
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}
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if action == Press && w.keys[key] == Press {
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repeated = true
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}
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if action == Release && w.stickyKeys {
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w.keys[key] = stick
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} else {
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w.keys[key] = action
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}
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if repeated {
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action = Repeat
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}
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}
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if !w.lockKeyMods {
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mods &^= ModCapsLock | ModNumLock
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}
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if w.callbacks.key != nil {
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w.callbacks.key(w, key, scancode, action, mods)
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}
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}
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func (w *Window) inputChar(codepoint rune, mods ModifierKey, plain bool) {
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if codepoint < 32 || (codepoint > 126 && codepoint < 160) {
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return
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}
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if !w.lockKeyMods {
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mods &^= ModCapsLock | ModNumLock
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}
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if w.callbacks.charmods != nil {
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w.callbacks.charmods(w, codepoint, mods)
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}
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if plain {
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if w.callbacks.character != nil {
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w.callbacks.character(w, codepoint)
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}
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}
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}
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func (w *Window) inputScroll(xoffset, yoffset float64) {
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if w.callbacks.scroll != nil {
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w.callbacks.scroll(w, xoffset, yoffset)
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}
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}
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func (w *Window) inputMouseClick(button MouseButton, action Action, mods ModifierKey) {
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if button < 0 || button > MouseButtonLast {
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return
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}
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if !w.lockKeyMods {
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mods &^= ModCapsLock | ModNumLock
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}
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if action == Release && w.stickyMouseButtons {
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w.mouseButtons[button] = stick
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} else {
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w.mouseButtons[button] = action
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}
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if w.callbacks.mouseButton != nil {
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w.callbacks.mouseButton(w, button, action, mods)
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}
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}
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func (w *Window) inputCursorPos(xpos float64, ypos float64) {
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if w.virtualCursorPosX == xpos && w.virtualCursorPosY == ypos {
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return
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}
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w.virtualCursorPosX = xpos
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w.virtualCursorPosY = ypos
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if w.callbacks.cursorPos != nil {
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w.callbacks.cursorPos(w, xpos, ypos)
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}
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}
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func (w *Window) inputCursorEnter(entered bool) {
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if w.callbacks.cursorEnter != nil {
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w.callbacks.cursorEnter(w, entered)
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}
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}
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func (w *Window) inputDrop(paths []string) {
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if w.callbacks.drop != nil {
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w.callbacks.drop(w, paths)
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}
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}
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func (w *Window) centerCursorInContentArea() error {
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width, height, err := w.platformGetWindowSize()
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if err != nil {
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return err
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}
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if err := w.platformSetCursorPos(float64(width/2), float64(height/2)); err != nil {
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return err
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}
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return nil
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}
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func (w *Window) GetInputMode(mode InputMode) (int, error) {
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if !_glfw.initialized {
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return 0, NotInitialized
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}
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switch mode {
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case CursorMode:
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return w.cursorMode, nil
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case StickyKeysMode:
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return boolToInt(w.stickyKeys), nil
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case StickyMouseButtonsMode:
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return boolToInt(w.stickyMouseButtons), nil
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case LockKeyMods:
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return boolToInt(w.lockKeyMods), nil
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case RawMouseMotion:
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return boolToInt(w.rawMouseMotion), nil
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default:
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return 0, fmt.Errorf("glfw: invalid input mode 0x%08X: %w", mode, InvalidEnum)
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}
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}
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func (w *Window) SetInputMode(mode InputMode, value int) error {
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if !_glfw.initialized {
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return NotInitialized
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}
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switch mode {
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case CursorMode:
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if value != CursorNormal && value != CursorHidden && value != CursorDisabled {
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return fmt.Errorf("glfw: invalid cursor mode 0x%08X: %w", value, InvalidEnum)
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}
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if w.cursorMode == value {
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return nil
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}
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w.cursorMode = value
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x, y, err := w.platformGetCursorPos()
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if err != nil {
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return err
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}
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w.virtualCursorPosX = x
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w.virtualCursorPosY = y
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if err := w.platformSetCursorMode(value); err != nil {
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return err
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}
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return nil
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case StickyKeysMode:
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if w.stickyKeys == intToBool(value) {
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return nil
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}
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if !intToBool(value) {
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// Release all sticky keys
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for i := Key(0); i <= KeyLast; i++ {
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if w.keys[i] == stick {
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w.keys[i] = Release
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}
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}
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}
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w.stickyKeys = intToBool(value)
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return nil
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case StickyMouseButtonsMode:
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if w.stickyMouseButtons == intToBool(value) {
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return nil
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}
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if !intToBool(value) {
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// Release all sticky mouse buttons
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for i := MouseButton(0); i <= MouseButtonLast; i++ {
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if w.mouseButtons[i] == stick {
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w.mouseButtons[i] = Release
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}
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}
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}
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w.stickyMouseButtons = intToBool(value)
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return nil
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case LockKeyMods:
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w.lockKeyMods = intToBool(value)
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return nil
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case RawMouseMotion:
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if !platformRawMouseMotionSupported() {
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return fmt.Errorf("glfw: raw mouse motion is not supported on this system: %w", PlatformError)
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}
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if w.rawMouseMotion == intToBool(value) {
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return nil
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}
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w.rawMouseMotion = intToBool(value)
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if err := w.platformSetRawMouseMotion(intToBool(value)); err != nil {
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return err
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}
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return nil
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default:
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return fmt.Errorf("glfw: invalid input mode 0x%08X: %w", mode, InvalidEnum)
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}
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}
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func RawMouseMotionSupported() (bool, error) {
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if !_glfw.initialized {
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return false, NotInitialized
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}
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return platformRawMouseMotionSupported(), nil
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}
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func GetKeyName(key Key, scancode int) (string, error) {
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if !_glfw.initialized {
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return "", NotInitialized
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}
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if key != KeyUnknown {
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if key < KeySpace || key > KeyLast {
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return "", fmt.Errorf("glfw: invalid key %d: %w", key, InvalidEnum)
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}
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if key != KeyKPEqual && (key < KeyKP0 || key > KeyKPAdd) && (key < KeyApostrophe || key > KeyWorld2) {
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return "", nil
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}
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scancode = platformGetKeyScancode(key)
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}
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return platformGetScancodeName(scancode)
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}
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func GetKeyScancode(key Key) (int, error) {
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if !_glfw.initialized {
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return 0, NotInitialized
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}
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if key < KeySpace || key > KeyLast {
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return 0, fmt.Errorf("glfw: invalid key %d: %w", key, InvalidEnum)
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}
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return platformGetKeyScancode(key), nil
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}
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func (w *Window) GetKey(key Key) (Action, error) {
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if !_glfw.initialized {
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return 0, NotInitialized
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}
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if key < KeySpace || key > KeyLast {
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return 0, fmt.Errorf("glfw: invalid key %d: %w", key, InvalidEnum)
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}
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if w.keys[key] == stick {
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// Sticky mode: release key now
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w.keys[key] = Release
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return Press, nil
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}
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return w.keys[key], nil
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}
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func (w *Window) GetMouseButton(button MouseButton) (Action, error) {
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if !_glfw.initialized {
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return 0, NotInitialized
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}
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if button < MouseButton1 || button > MouseButtonLast {
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return 0, fmt.Errorf("glfw: invalid mouse button %d: %w", button, InvalidEnum)
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}
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if w.mouseButtons[button] == stick {
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// Sticky mode: release mouse button now
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w.mouseButtons[button] = Release
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return Press, nil
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}
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return w.mouseButtons[button], nil
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}
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func (w *Window) GetCursorPos() (xpos, ypos float64, err error) {
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if !_glfw.initialized {
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return 0, 0, NotInitialized
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}
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if w.cursorMode == CursorDisabled {
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return w.virtualCursorPosX, w.virtualCursorPosY, nil
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} else {
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return w.platformGetCursorPos()
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}
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}
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func (w *Window) SetCursorPos(xpos, ypos float64) error {
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if !_glfw.initialized {
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return NotInitialized
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}
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if xpos != xpos || xpos < -math.MaxFloat64 || xpos > math.MaxFloat64 || ypos != ypos || ypos < -math.MaxFloat64 || ypos > math.MaxFloat64 {
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return fmt.Errorf("glfw: invalid cursor position %f %f: %w", xpos, ypos, InvalidValue)
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}
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if !w.platformWindowFocused() {
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return nil
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}
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if w.cursorMode == CursorDisabled {
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// Only update the accumulated position if the cursor is disabled
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w.virtualCursorPosX = xpos
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w.virtualCursorPosY = ypos
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return nil
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} else {
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// Update system cursor position
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return w.platformSetCursorPos(xpos, ypos)
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}
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}
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func CreateStandardCursor(shape StandardCursor) (*Cursor, error) {
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if !_glfw.initialized {
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return nil, NotInitialized
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}
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if shape != ArrowCursor &&
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shape != IBeamCursor &&
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shape != CrosshairCursor &&
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shape != HandCursor &&
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shape != HResizeCursor &&
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shape != VResizeCursor &&
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shape != ResizeNWSECursor &&
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shape != ResizeNESWCursor &&
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shape != ResizeAllCursor &&
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shape != NotAllowedCursor {
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return nil, fmt.Errorf("glfw: invalid standard cursor 0x%08X: %w", shape, InvalidEnum)
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}
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cursor := &Cursor{}
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_glfw.cursors = append(_glfw.cursors, cursor)
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if err := cursor.platformCreateStandardCursor(shape); err != nil {
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_ = cursor.Destroy()
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return nil, err
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}
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return cursor, nil
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}
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func (c *Cursor) Destroy() error {
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if !_glfw.initialized {
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return NotInitialized
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}
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if c == nil {
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return nil
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}
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// Make sure the cursor is not being used by any window
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for _, window := range _glfw.windows {
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if window.cursor == c {
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if err := window.SetCursor(nil); err != nil {
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return err
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}
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}
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}
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if err := c.platformDestroyCursor(); err != nil {
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return err
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}
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// Unlink cursor from global linked list
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for i, cursor := range _glfw.cursors {
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if cursor == c {
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copy(_glfw.cursors[i:], _glfw.cursors[i+1:])
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_glfw.cursors = _glfw.cursors[:len(_glfw.cursors)-1]
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break
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}
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}
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return nil
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}
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func (w *Window) SetCursor(cursor *Cursor) error {
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if !_glfw.initialized {
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return NotInitialized
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}
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w.cursor = cursor
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if err := w.platformSetCursor(cursor); err != nil {
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return err
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}
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return nil
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}
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func (w *Window) SetKeyCallback(cbfun KeyCallback) (KeyCallback, error) {
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if !_glfw.initialized {
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return nil, NotInitialized
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}
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old := w.callbacks.key
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w.callbacks.key = cbfun
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return old, nil
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}
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func (w *Window) SetCharCallback(cbfun CharCallback) (CharCallback, error) {
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if !_glfw.initialized {
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return nil, NotInitialized
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}
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old := w.callbacks.character
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w.callbacks.character = cbfun
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return old, nil
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}
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func (w *Window) SetCharModsCallback(cbfun CharModsCallback) (CharModsCallback, error) {
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if !_glfw.initialized {
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return nil, NotInitialized
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}
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old := w.callbacks.charmods
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w.callbacks.charmods = cbfun
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return old, nil
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}
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func (w *Window) SetMouseButtonCallback(cbfun MouseButtonCallback) (MouseButtonCallback, error) {
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if !_glfw.initialized {
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return nil, NotInitialized
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}
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old := w.callbacks.mouseButton
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w.callbacks.mouseButton = cbfun
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return old, nil
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}
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func (w *Window) SetCursorPosCallback(cbfun CursorPosCallback) (CursorPosCallback, error) {
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if !_glfw.initialized {
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return nil, NotInitialized
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}
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old := w.callbacks.cursorPos
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w.callbacks.cursorPos = cbfun
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return old, nil
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}
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func (w *Window) SetCursorEnterCallback(cbfun CursorEnterCallback) (CursorEnterCallback, error) {
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if !_glfw.initialized {
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return nil, NotInitialized
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}
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old := w.callbacks.cursorEnter
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w.callbacks.cursorEnter = cbfun
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return old, nil
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}
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func (w *Window) SetScrollCallback(cbfun ScrollCallback) (ScrollCallback, error) {
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if !_glfw.initialized {
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return nil, NotInitialized
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}
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old := w.callbacks.scroll
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w.callbacks.scroll = cbfun
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return old, nil
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}
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func (w *Window) SetDropCallback(cbfun DropCallback) (DropCallback, error) {
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if !_glfw.initialized {
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return nil, NotInitialized
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}
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old := w.callbacks.drop
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w.callbacks.drop = cbfun
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return old, nil
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}
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func (w *Window) SetClipboardString(str string) error {
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if !_glfw.initialized {
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return NotInitialized
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}
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return platformSetClipboardString(str)
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}
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func GetClipboardString() (string, error) {
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if !_glfw.initialized {
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return "", NotInitialized
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}
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return platformGetClipboardString()
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}
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