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# Copyright 2022-2023 Frederico de Oliveira Linhares
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
module CandyGear
class Menu
class Stack
def initialize(menu)
@stack = [];
@stack << menu;
end
def push(menu) = @stack << menu;
def pop()
@stack.pop() if @stack.size > 1;
end
def draw() = @stack.each {_1.draw();}
def size() = @stack.size;
end
class BorderlessView
attr_reader(:texture, :font, :text_color, :bg_color, :sprites);
def initialize(texture, font, sprite_width, sprite_height)
@texture = texture;
@font = font;
@sprite_width = sprite_width;
@sprite_height = sprite_height;
@sprites = {
arrow_select: Sprite.new(
@texture, Vector4D.new(1.0/3.0, 1.0/3.0, 2.0/3.0, 2.0/3.0))
}
end
def draw(x, y, width, height)
# Nothing.
end
def border_width() = 0;
def border_height() = 0;
end
class BorderedView
attr_reader(:texture, :font, :sprites, :border_width, :border_height);
def initialize(texture, font, sprite_width, sprite_height)
@texture = texture;
@font = font;
@border_width = sprite_width;
@border_height = sprite_height;
@sprites = {
arrow_select: Sprite.new(
@texture, Vector4D.new(1.0/3.0, 1.0/3.0, 2.0/3.0, 2.0/3.0)),
box_top_left: Sprite.new(
@texture, Vector4D.new(0.0, 0.0, 1.0/3.0, 1.0/3.0)),
box_top: Sprite.new(
@texture, Vector4D.new(1.1/3.0, 0.0, 1.9/3.0, 1.0/3.0)),
box_top_right: Sprite.new(
@texture, Vector4D.new(2.0/3.0, 0.0, 1.0, 1.0/3.0)),
box_left: Sprite.new(
@texture, Vector4D.new(0.0, 1.1/3.0, 1.0/3.0, 1.9/3.0)),
box_right: Sprite.new(
@texture, Vector4D.new(2.0/3.0, 1.1/3.0, 1.0, 1.9/3.0)),
box_bottom_left: Sprite.new(
@texture, Vector4D.new(0.0, 2.0/3.0, 1.0/3.0, 1.0)),
box_bottom: Sprite.new(
@texture, Vector4D.new(1.1/3.0, 2.0/3.0, 1.9/3.0, 1.0)),
box_bottom_right: Sprite.new(
@texture, Vector4D.new(2.0/3.0, 2.0/3.0, 1.0, 1.0))
}
end
def draw(view, x, y, width, height)
num_horizontal_sprites = width / @border_width + 1;
num_horizontal_sprites += 1 if width % @border_width > 0;
num_vertical_sprites = height / @border_height;
num_vertical_sprites += 1 if height % @border_height > 0;
# Draw the corners.
@sprites[:box_top_left].draw(
view, Vector4D.new(x, y, border_width, border_height));
@sprites[:box_top_right].draw(
view, Vector4D.new(
@border_width * (num_horizontal_sprites + 1) + x, y,
border_width, border_height));
@sprites[:box_bottom_left].draw(
view, Vector4D.new(
x, @border_height * (num_vertical_sprites + 1) + y,
border_width, border_height));
@sprites[:box_bottom_right].draw(
view, Vector4D.new(
@border_width * (num_horizontal_sprites + 1) + x,
@border_height * (num_vertical_sprites + 1) + y,
border_width, border_height));
# Draw the edges.
num_horizontal_sprites.times do |i|
# Top
@sprites[:box_top].draw(
view, Vector4D.new(@border_width * (i + 1) + x, y,
border_width, border_height));
# Bottom
@sprites[:box_bottom].draw(
view, Vector4D.new(@border_width * (i + 1) + x,
@border_height * (num_vertical_sprites + 1) + y,
border_width, border_height));
end
num_vertical_sprites.times do |i|
# Left
@sprites[:box_left].draw(
view, Vector4D.new(
x, @border_height * (i + 1) + y, border_width, border_height));
# Right
@sprites[:box_right].draw(
view, Vector4D.new(
@border_width * (num_horizontal_sprites + 1) + x,
@border_height * (i + 1) + y,
border_width, border_height));
end
end
end
class Option
attr_reader(:action, :text, :width, :height);
def initialize(text, action, width, height);
@text = text;
@action = action;
@width = width;
@height = height;
end
end
attr_reader(:width, :height);
def initialize(view, menu_view, pos_x, pos_y, options)
@view = view;
@menu_view = menu_view;
@pos_x = pos_x;
@pos_y = pos_y;
@options = options.map do |opt|
texture = Texture.from_text(menu_view.font, opt[:text])
Option.new(
Sprite.new(texture, CandyGear::Vector4D.new(0, 0, 1.0, 1.0)),
opt[:action],
texture.width,
texture.height);
end
@current_option = 0;
@option_max_width = 0;
@option_max_height = 0;
@options.each do |i|
if @option_max_width < i.width then
@option_max_width = i.width;
end
if @option_max_height < i.height then
@option_max_height = i.height;
end
end
@width = @option_max_width;
@height = @option_max_height * @options.size;
end
def next_opt()
@current_option += 1;
@current_option = 0 if @current_option >= @options.size();
end
def pred_opt()
if @current_option <= 0 then
@current_option = @options.size - 1;
else
@current_option -= 1;
end
end
def activate()
@options[@current_option].action.call();
end
def draw()
@menu_view.draw(@view, @pos_x, @pos_y, @width, @height);
@options.each_with_index do |opt, i|
opt.text.draw(
@view, Vector4D.new(
@pos_x + @menu_view.border_width +
@menu_view.border_width,
@pos_y + @menu_view.border_height +
@option_max_height * i,
opt.width, opt.height));
end
@menu_view.sprites[:arrow_select].draw(
@view, Vector4D.new(
@pos_x + @menu_view.border_width,
@pos_y + @menu_view.border_height +
@option_max_height * @current_option,
@menu_view.border_width, @menu_view.border_height));
end
end
end
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