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// Window manipulation
// Copyright (C) 2021 Nguyễn Gia Phong
//
// This file is part of gfz.
//
// gfz is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published
// by the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// gfz is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with gfz. If not, see <https://www.gnu.org/licenses/>.
usingnamespace @import("cimport.zig");
const Error = gfz.Error;
const Monitor = @import("Monitor.zig");
const checkError = gfz.checkError;
const getError = gfz.getError;
const gfz = @import("gfz.zig");
const Window = @This();
pub const Impl = GLFWwindow;
pimpl: *Impl,
const Options = struct {
fullscreen: ?Monitor = null,
share: ?Window = null,
};
pub const Hints = struct {
pub const dont_care = GLFW_DONT_CARE;
resizable: bool = true,
visible: bool = true,
decorated: bool = true,
focused: bool = true,
auto_iconify: bool = true,
floating: bool = false,
maximized: bool = false,
center_cursor: bool = true,
transparent_framebuffer: bool = false,
focus_on_show: bool = true,
scale_to_monitor: bool = false,
bits: struct {
red: c_int = 8,
green: c_int = 8,
blue: c_int = 8,
alpha: c_int = 8,
depth: c_int = 24,
stencil: c_int = 8,
} = .{},
accum_bits: struct {
red: c_int = 0,
green: c_int = 0,
blue: c_int = 0,
alpha: c_int = 0,
} = .{},
aux_buffers: c_int = 0,
samples: c_int = 0,
refresh_rate: c_int = dont_care,
stereo: bool = false,
srgb_capable: bool = false,
doublebuffer: bool = true,
client_api: enum(c_int) {
opengl = GLFW_OPENGL_API,
opengl_es = GLFW_OPENGL_ES_API,
no = GLFW_NO_API,
} = .opengl,
context: struct {
creation_api: enum(c_int) {
native = GLFW_NATIVE_CONTEXT_API,
egl = GLFW_EGL_CONTEXT_API,
osmesa = GLFW_OSMESA_CONTEXT_API,
} = .native,
version: struct {
major: c_int = 1,
minor: c_int = 0,
} = .{},
robustness: enum(c_int) {
no_robustness = GLFW_NO_ROBUSTNESS,
no_reset_notification = GLFW_NO_RESET_NOTIFICATION,
lose_context_on_reset = GLFW_LOSE_CONTEXT_ON_RESET,
} = .no_robustness,
release_behavior: enum(c_int) {
any = GLFW_ANY_RELEASE_BEHAVIOR,
flush = GLFW_RELEASE_BEHAVIOR_FLUSH,
none = GLFW_RELEASE_BEHAVIOR_NONE,
} = .any,
} = .{},
opengl: struct {
forward_compat: bool = false,
debug_context: bool = false,
profile: enum(c_int) {
any = GLFW_OPENGL_ANY_PROFILE,
compat = GLFW_OPENGL_COMPAT_PROFILE,
core = GLFW_OPENGL_CORE_PROFILE,
} = .any,
} = .{},
};
/// Set the specified window hint to the desired value.
fn setHint(hint: c_int, value: anytype) Error!void {
glfwWindowHint(hint, switch (@TypeOf(value)) {
c_int, comptime_int => value,
bool => if (value) GLFW_TRUE else GLFW_FALSE,
else => @enumToInt(value),
});
try checkError();
}
/// Create a window and its associated context.
pub fn create(width: c_int, height: c_int, title: [:0]const u8,
options: Options, hints: Hints) Error!Window {
try setHint(GLFW_RESIZABLE, hints.resizable);
try setHint(GLFW_VISIBLE, hints.visible);
try setHint(GLFW_DECORATED, hints.decorated);
try setHint(GLFW_FOCUSED, hints.focused);
try setHint(GLFW_AUTO_ICONIFY, hints.auto_iconify);
try setHint(GLFW_FLOATING, hints.floating);
try setHint(GLFW_MAXIMIZED, hints.maximized);
try setHint(GLFW_CENTER_CURSOR, hints.center_cursor);
try setHint(GLFW_TRANSPARENT_FRAMEBUFFER, hints.transparent_framebuffer);
try setHint(GLFW_FOCUS_ON_SHOW, hints.focus_on_show);
try setHint(GLFW_SCALE_TO_MONITOR, hints.scale_to_monitor);
try setHint(GLFW_RED_BITS, hints.bits.red);
try setHint(GLFW_GREEN_BITS, hints.bits.green);
try setHint(GLFW_BLUE_BITS, hints.bits.blue);
try setHint(GLFW_ALPHA_BITS, hints.bits.alpha);
try setHint(GLFW_DEPTH_BITS, hints.bits.depth);
try setHint(GLFW_STENCIL_BITS, hints.bits.stencil);
try setHint(GLFW_ACCUM_RED_BITS, hints.accum_bits.red);
try setHint(GLFW_ACCUM_GREEN_BITS, hints.accum_bits.green);
try setHint(GLFW_ACCUM_BLUE_BITS, hints.accum_bits.blue);
try setHint(GLFW_ACCUM_ALPHA_BITS, hints.accum_bits.alpha);
try setHint(GLFW_AUX_BUFFERS, hints.aux_buffers);
try setHint(GLFW_SAMPLES, hints.samples);
try setHint(GLFW_REFRESH_RATE, hints.refresh_rate);
try setHint(GLFW_STEREO, hints.stereo);
try setHint(GLFW_SRGB_CAPABLE, hints.srgb_capable);
try setHint(GLFW_DOUBLEBUFFER, hints.doublebuffer);
try setHint(GLFW_CLIENT_API, hints.client_api);
try setHint(GLFW_CONTEXT_CREATION_API, hints.context.creation_api);
try setHint(GLFW_CONTEXT_VERSION_MAJOR, hints.context.version.major);
try setHint(GLFW_CONTEXT_VERSION_MINOR, hints.context.version.minor);
try setHint(GLFW_CONTEXT_ROBUSTNESS, hints.context.robustness);
try setHint(GLFW_CONTEXT_RELEASE_BEHAVIOR, hints.context.release_behavior);
try setHint(GLFW_OPENGL_FORWARD_COMPAT, hints.opengl.forward_compat);
try setHint(GLFW_OPENGL_DEBUG_CONTEXT, hints.opengl.debug_context);
try setHint(GLFW_OPENGL_PROFILE, hints.opengl.profile);
const monitor = if (options.fullscreen) |box| box.pimpl else null;
const share = if (options.share) |box| box.pimpl else null;
const ptr = glfwCreateWindow(width, height, title.ptr, monitor, share);
return if (ptr) |pimpl|
Window{ .pimpl = pimpl }
else
getError();
}
/// Make the context current for the calling thread.
pub fn makeCurrent(self: Window) Error!void {
glfwMakeContextCurrent(self.pimpl);
try checkError();
}
/// Check the close flag.
pub fn shouldClose(self: Window) Error!bool {
const flag = glfwWindowShouldClose(self.pimpl);
try checkError();
return flag == GLFW_TRUE;
}
/// Set the close flag.
pub fn setShouldClose(self: Window, value: bool) Error!void {
glfwSetWindowShouldClose(self.pimpl, if (value) GLFW_TRUE else GLFW_FALSE);
try checkError();
}
/// Swap the front and back buffers.
pub fn swapBuffers(self: Window) Error!void {
glfwSwapBuffers(self.pimpl);
try checkError();
}
pub const InputMode = enum(c_int) {
sticky_keys = GLFW_STICKY_KEYS,
sticky_mouse_buttons = GLFW_STICKY_MOUSE_BUTTONS,
lock_key_mods = GLFW_LOCK_KEY_MODS,
raw_mouse_motion = GLFW_RAW_MOUSE_MOTION,
};
/// Return the value of an input option.
pub fn getInputMode(self: Window, mode: InputMode) Error!bool {
const value = glfwGetInputMode(self.pimpl, @enumToInt(mode));
try checkError();
return value == GLFW_TRUE;
}
/// Set an input option.
pub fn setInputMode(self: Window, mode: InputMode, flag: bool) Error!void {
const value = if (flag) GLFW_TRUE else GLFW_FALSE;
glfwSetInputMode(self.pimpl, @enumToInt(mode), value);
try checkError();
}
pub const CursorMode = enum(c_int) {
normal = GLFW_CURSOR_NORMAL,
hidden = GLFW_CURSOR_HIDDEN,
disabled = GLFW_CURSOR_DISABLED,
};
/// Return the cursor mode.
pub fn getCursorMode(self: Window) Error!CursorMode {
const value = glfwGetInputMode(self.pimpl, GLFW_CURSOR);
try checkError();
return @intToEnum(CursorMode, value);
}
/// Set the cursor mode.
pub fn setCursorMode(self: Window, value: CursorMode) Error!void {
glfwSetInputMode(self.pimpl, GLFW_CURSOR, @enumToInt(value));
try checkError();
}
/// Set the size callback.
pub fn setSizeCallback(self: Window, callback: GLFWwindowsizefun) Error!void {
_ = glfwSetWindowSizeCallback(self.pimpl, callback);
try checkError();
}
/// Set the key callback.
pub fn setKeyCallback(self: Window, callback: GLFWkeyfun) Error!void {
_ = glfwSetKeyCallback(self.pimpl, callback);
try checkError();
}
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