You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
79 lines
1.9 KiB
79 lines
1.9 KiB
7 years ago
|
#pragma once
|
||
|
|
|
||
|
|
#include "DiabloUI/art.h"
|
||
|
|
#include "DiabloUI/ui_item.h"
|
||
|
|
|
||
|
|
namespace dvl {
|
||
|
|
|
||
|
|
extern Art ArtScrollBarBackground;
|
||
|
|
constexpr decltype(SDL_Rect().w) SCROLLBAR_BG_WIDTH = 25;
|
||
|
|
|
||
|
|
extern Art ArtScrollBarArrow;
|
||
|
|
enum class ScrollBarArrowFrame {
|
||
|
|
UP_ACTIVE = 0,
|
||
|
|
UP,
|
||
|
|
DOWN_ACTIVE,
|
||
|
|
DOWN,
|
||
|
|
};
|
||
|
|
|
||
|
|
extern Art ArtScrollBarThumb;
|
||
|
|
constexpr decltype(SDL_Rect().w) SCROLLBAR_ARROW_WIDTH = 25;
|
||
|
|
|
||
|
|
inline SDL_Rect UpArrowRect(const UiScrollBar &sb)
|
||
|
|
{
|
||
|
|
return {
|
||
|
|
sb.rect.x,
|
||
|
|
sb.rect.y,
|
||
|
|
SCROLLBAR_ARROW_WIDTH,
|
||
|
|
static_cast<decltype(SDL_Rect().h)>(sb.arrow->h()),
|
||
|
|
};
|
||
|
|
}
|
||
|
|
|
||
|
|
inline SDL_Rect DownArrowRect(const UiScrollBar &sb)
|
||
|
|
{
|
||
|
|
return {
|
||
|
|
sb.rect.x,
|
||
|
|
static_cast<decltype(SDL_Rect().y)>(sb.rect.y + sb.rect.h - sb.arrow->h()),
|
||
|
|
SCROLLBAR_ARROW_WIDTH,
|
||
|
|
static_cast<decltype(SDL_Rect().h)>(sb.arrow->h()),
|
||
|
|
};
|
||
|
|
}
|
||
|
|
|
||
|
|
inline decltype(SDL_Rect().h) BarHeight(const UiScrollBar &sb)
|
||
|
|
{
|
||
|
|
return sb.rect.h - 2 * sb.arrow->h();
|
||
|
|
}
|
||
|
|
|
||
|
|
inline SDL_Rect BarRect(const UiScrollBar &sb)
|
||
|
|
{
|
||
|
|
return {
|
||
|
|
sb.rect.x,
|
||
|
|
static_cast<decltype(SDL_Rect().y)>(sb.rect.y + sb.arrow->h()),
|
||
|
|
SCROLLBAR_BG_WIDTH,
|
||
|
|
BarHeight(sb),
|
||
|
|
};
|
||
|
|
}
|
||
|
|
|
||
|
|
inline SDL_Rect ThumbRect(const UiScrollBar &sb, std::size_t selected_index, std::size_t num_items)
|
||
|
|
{
|
||
|
|
constexpr int THUMB_OFFSET_X = 3;
|
||
|
|
const int thumb_max_y = BarHeight(sb) - sb.thumb->h();
|
||
|
|
const int thumb_y = (selected_index * thumb_max_y / (num_items - 1));
|
||
|
|
return {
|
||
|
|
static_cast<decltype(SDL_Rect().x)>(sb.rect.x + THUMB_OFFSET_X),
|
||
|
|
static_cast<decltype(SDL_Rect().y)>(sb.rect.y + sb.arrow->h() + thumb_y),
|
||
|
|
static_cast<decltype(SDL_Rect().w)>(sb.rect.w - THUMB_OFFSET_X),
|
||
|
|
static_cast<decltype(SDL_Rect().h)>(sb.thumb->h()),
|
||
|
|
};
|
||
|
|
}
|
||
|
|
|
||
|
|
constexpr UiScrollBar MakeScrollBar(SDL_Rect rect)
|
||
|
|
{
|
||
|
|
return UiScrollBar(&ArtScrollBarBackground, &ArtScrollBarThumb, &ArtScrollBarArrow, rect);
|
||
|
|
}
|
||
|
|
|
||
|
|
void LoadScrollBar();
|
||
|
|
void UnloadScrollBar();
|
||
|
|
|
||
|
|
} // namespace dvl
|