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-rw-r--r--src/frontend/mame/ui/dirmenu.cpp2
-rw-r--r--src/frontend/mame/ui/filesel.cpp2
-rw-r--r--src/frontend/mame/ui/menu.cpp166
-rw-r--r--src/frontend/mame/ui/menu.h31
-rw-r--r--src/frontend/mame/ui/swlist.cpp2
5 files changed, 104 insertions, 99 deletions
diff --git a/src/frontend/mame/ui/dirmenu.cpp b/src/frontend/mame/ui/dirmenu.cpp
index ec9e2753de7..13875c328f5 100644
--- a/src/frontend/mame/ui/dirmenu.cpp
+++ b/src/frontend/mame/ui/dirmenu.cpp
@@ -444,7 +444,7 @@ void menu_add_change_folder::handle()
}
}
}
- top_line = selected - (visible_lines / 2);
+ centre_selection();
}
}
else if (menu_event->iptkey == IPT_UI_CANCEL)
diff --git a/src/frontend/mame/ui/filesel.cpp b/src/frontend/mame/ui/filesel.cpp
index 3343d82367c..34e86c99fe8 100644
--- a/src/frontend/mame/ui/filesel.cpp
+++ b/src/frontend/mame/ui/filesel.cpp
@@ -485,7 +485,7 @@ void menu_file_selector::handle()
if (selected_entry != nullptr && selected_entry != cur_selected)
{
set_selection((void *)selected_entry);
- top_line = selected - (visible_lines / 2);
+ centre_selection();
}
}
}
diff --git a/src/frontend/mame/ui/menu.cpp b/src/frontend/mame/ui/menu.cpp
index 623511ae50c..095cae4acf1 100644
--- a/src/frontend/mame/ui/menu.cpp
+++ b/src/frontend/mame/ui/menu.cpp
@@ -27,6 +27,9 @@
#include "rendutil.h"
#include "uiinput.h"
+#include <algorithm>
+#include <cmath>
+
namespace ui {
/***************************************************************************
@@ -211,6 +214,8 @@ menu::menu(mame_ui_manager &mui, render_container *_container)
, m_event()
, m_pool(nullptr)
, m_focus(focused_menu::main)
+ , m_visible_lines(0)
+ , m_visible_items(0)
, m_resetpos(0)
, m_resetref(nullptr)
{
@@ -257,7 +262,7 @@ void menu::reset(reset_options options)
for (pool *ppool = m_pool; ppool != nullptr; ppool = ppool->next)
ppool->top = (UINT8 *)(ppool + 1);
item.clear();
- visitems = 0;
+ m_visible_items = 0;
selected = 0;
// add an item to return
@@ -547,9 +552,8 @@ void menu::draw(UINT32 flags, float origx0, float origy0)
if (visible_main_menu_height + visible_extra_menu_height + 2.0f * UI_BOX_TB_BORDER > 1.0f)
visible_main_menu_height = 1.0f - 2.0f * UI_BOX_TB_BORDER - visible_extra_menu_height;
- visible_lines = floor(visible_main_menu_height / line_height);
- if (visible_lines > item.size()) visible_lines = item.size();
- visible_main_menu_height = (float)visible_lines * line_height;
+ m_visible_lines = std::min(int(std::floor(visible_main_menu_height / line_height)), int(unsigned(item.size())));
+ visible_main_menu_height = float(m_visible_lines) * line_height;
// compute top/left of inner menu area by centering
float const visible_left = (1.0f - visible_width) * 0.5f;
@@ -565,17 +569,17 @@ void menu::draw(UINT32 flags, float origx0, float origy0)
if (top_line < 0 || is_first_selected())
top_line = 0;
- if (selected >= (top_line + visible_lines))
- top_line = selected - (visible_lines / 2);
- if ((top_line > (item.size() - visible_lines)) || (selected == (item.size() - 1)))
- top_line = item.size() - visible_lines;
+ if (selected >= (top_line + m_visible_lines))
+ top_line = selected - (m_visible_lines / 2);
+ if ((top_line > (item.size() - m_visible_lines)) || (selected == (item.size() - 1)))
+ top_line = item.size() - m_visible_lines;
// if scrolling, show arrows
- bool const show_top_arrow((item.size() > visible_lines) && (top_line > 0));
- bool const show_bottom_arrow((item.size() > visible_lines) && (top_line != (item.size() - visible_lines)));
+ bool const show_top_arrow((item.size() > m_visible_lines) && !first_item_visible());
+ bool const show_bottom_arrow((item.size() > m_visible_lines) && !last_item_visible());
// set the number of visible lines, minus 1 for top arrow and 1 for bottom arrow
- visitems = visible_lines - (show_top_arrow ? 1 : 0) - (show_bottom_arrow ? 1 : 0);
+ m_visible_items = m_visible_lines - (show_top_arrow ? 1 : 0) - (show_bottom_arrow ? 1 : 0);
// determine effective positions taking into account the hilighting arrows
float const effective_width = visible_width - 2.0f * gutter_width;
@@ -600,7 +604,7 @@ void menu::draw(UINT32 flags, float origx0, float origy0)
float const line_x1 = x2 - 0.5f * UI_LINE_WIDTH;
if (!customonly)
{
- for (int linenum = 0; linenum < visible_lines; linenum++)
+ for (int linenum = 0; linenum < m_visible_lines; linenum++)
{
auto const itemnum = top_line + linenum;
menu_item const &pitem = item[itemnum];
@@ -634,9 +638,9 @@ void menu::draw(UINT32 flags, float origx0, float origy0)
if (bgcolor != UI_TEXT_BG_COLOR)
highlight(container, line_x0, line_y0, line_x1, line_y1, bgcolor);
- // if we're on the top line, display the up arrow
if (linenum == 0 && show_top_arrow)
{
+ // if we're on the top line, display the up arrow
draw_arrow(container,
0.5f * (x1 + x2) - 0.5f * ud_arrow_width,
line_y0 + 0.25f * line_height,
@@ -647,10 +651,9 @@ void menu::draw(UINT32 flags, float origx0, float origy0)
if (hover == itemnum)
hover = HOVER_ARROW_UP;
}
-
- // if we're on the bottom line, display the down arrow
- else if (linenum == visible_lines - 1 && show_bottom_arrow)
+ else if (linenum == m_visible_lines - 1 && show_bottom_arrow)
{
+ // if we're on the bottom line, display the down arrow
draw_arrow(container,
0.5f * (x1 + x2) - 0.5f * ud_arrow_width,
line_y0 + 0.25f * line_height,
@@ -661,14 +664,14 @@ void menu::draw(UINT32 flags, float origx0, float origy0)
if (hover == itemnum)
hover = HOVER_ARROW_DOWN;
}
-
- // if we're just a divider, draw a line
else if (pitem.type == menu_item_type::SEPARATOR)
+ {
+ // if we're just a divider, draw a line
container->add_line(visible_left, line_y0 + 0.5f * line_height, visible_left + visible_width, line_y0 + 0.5f * line_height, UI_LINE_WIDTH, UI_BORDER_COLOR, PRIMFLAG_BLENDMODE(BLENDMODE_ALPHA));
-
- // if we don't have a subitem, just draw the string centered
+ }
else if (pitem.subtext.empty())
{
+ // if we don't have a subitem, just draw the string centered
if (pitem.flags & FLAG_UI_HEADING)
{
float heading_width = ui().get_string_width(itemtext);
@@ -678,10 +681,9 @@ void menu::draw(UINT32 flags, float origx0, float origy0)
ui().draw_text_full(container, itemtext, effective_left, line_y0, effective_width,
ui::text_layout::CENTER, ui::text_layout::TRUNCATE, mame_ui_manager::NORMAL, fgcolor, bgcolor, nullptr, nullptr);
}
-
- // otherwise, draw the item on the left and the subitem text on the right
else
{
+ // otherwise, draw the item on the left and the subitem text on the right
bool const subitem_invert(pitem.flags & FLAG_INVERT);
char const *subitem_text(pitem.subtext.c_str());
float item_width, subitem_width;
@@ -871,25 +873,25 @@ void menu::handle_events(UINT32 flags)
{
if ((flags & FLAG_UI_DATS) != 0)
{
- top_line -= visitems - (top_line + visible_lines == item.size() - 1);
+ top_line -= m_visible_items - (last_item_visible() ? 1 : 0);
return;
}
- selected -= visitems;
+ selected -= m_visible_items;
if (selected < 0)
selected = 0;
- top_line -= visitems - (top_line + visible_lines == item.size() - 1);
+ top_line -= m_visible_items - (last_item_visible() ? 1 : 0);
}
else if (hover == HOVER_ARROW_DOWN)
{
if ((flags & FLAG_UI_DATS) != 0)
{
- top_line += visible_lines - 2;
+ top_line += m_visible_lines - 2;
return;
}
- selected += visible_lines - 2 + (selected == 0);
+ selected += m_visible_lines - 2 + (selected == 0);
if (selected > item.size() - 1)
selected = item.size() - 1;
- top_line += visible_lines - 2;
+ top_line += m_visible_lines - 2;
}
}
break;
@@ -923,7 +925,7 @@ void menu::handle_events(UINT32 flags)
is_first_selected() ? selected = top_line = item.size() - 1 : selected -= local_menu_event.num_lines;
validate_selection(-1);
top_line -= (selected <= top_line && top_line != 0);
- if (selected <= top_line && visitems != visible_lines)
+ if (selected <= top_line && m_visible_items != m_visible_lines)
top_line -= local_menu_event.num_lines;
}
else
@@ -935,8 +937,8 @@ void menu::handle_events(UINT32 flags)
}
is_last_selected() ? selected = top_line = 0 : selected += local_menu_event.num_lines;
validate_selection(1);
- top_line += (selected >= top_line + visitems + (top_line != 0));
- if (selected >= (top_line + visitems + (top_line != 0)))
+ top_line += (selected >= top_line + m_visible_items + (top_line != 0));
+ if (selected >= (top_line + m_visible_items + (top_line != 0)))
top_line += local_menu_event.num_lines;
}
}
@@ -1021,7 +1023,7 @@ void menu::handle_keys(UINT32 flags)
is_first_selected() ? selected = top_line = item.size() - 1 : --selected;
validate_selection(-1);
top_line -= (selected <= top_line && top_line != 0);
- if (selected <= top_line && visitems != visible_lines)
+ if (selected <= top_line && m_visible_items != m_visible_lines)
top_line--;
}
@@ -1035,26 +1037,26 @@ void menu::handle_keys(UINT32 flags)
}
is_last_selected() ? selected = top_line = 0 : ++selected;
validate_selection(1);
- top_line += (selected >= top_line + visitems + (top_line != 0));
- if (selected >= (top_line + visitems + (top_line != 0)))
+ top_line += (selected >= top_line + m_visible_items + (top_line != 0));
+ if (selected >= (top_line + m_visible_items + (top_line != 0)))
top_line++;
}
- // page up backs up by visitems
+ // page up backs up by m_visible_items
if (exclusive_input_pressed(IPT_UI_PAGE_UP, 6))
{
- selected -= visitems;
- top_line -= visitems - (top_line + visible_lines == item.size() - 1);
+ selected -= m_visible_items;
+ top_line -= m_visible_items - (last_item_visible() ? 1 : 0);
if (selected < 0)
selected = 0;
validate_selection(1);
}
- // page down advances by visitems
+ // page down advances by m_visible_items
if (exclusive_input_pressed(IPT_UI_PAGE_DOWN, 6))
{
- selected += visible_lines - 2 + (selected == 0);
- top_line += visible_lines - 2;
+ selected += m_visible_lines - 2 + (selected == 0);
+ top_line += m_visible_lines - 2;
if (selected > item.size() - 1)
selected = item.size() - 1;
@@ -1444,13 +1446,13 @@ void menu::draw_select_game(UINT32 flags)
// account for extra space at the top and bottom
float visible_main_menu_height = 1.0f - 2.0f * UI_BOX_TB_BORDER - visible_extra_menu_height;
- visible_lines = floor(visible_main_menu_height / line_height);
- visible_main_menu_height = (float)(visible_lines * line_height);
+ m_visible_lines = int(std::trunc(visible_main_menu_height / line_height));
+ visible_main_menu_height = float(m_visible_lines) * line_height;
if (!is_swlist)
- ui_globals::visible_main_lines = visible_lines;
+ ui_globals::visible_main_lines = m_visible_lines;
else
- ui_globals::visible_sw_lines = visible_lines;
+ ui_globals::visible_sw_lines = m_visible_lines;
// compute top/left of inner menu area by centering
float visible_left = primary_left;
@@ -1472,24 +1474,24 @@ void menu::draw_select_game(UINT32 flags)
// compute and add main box
x1 = visible_left - UI_BOX_LR_BORDER;
x2 = visible_left + visible_width + UI_BOX_LR_BORDER;
- float line = visible_top + (float)(visible_lines * line_height);
+ float line = visible_top + (float(m_visible_lines) * line_height);
ui().draw_outlined_box(container, x1, y1, x2, y2, UI_BACKGROUND_COLOR);
- if (visible_items < visible_lines)
- visible_lines = visible_items;
+ if (visible_items < m_visible_lines)
+ m_visible_lines = visible_items;
if (top_line < 0 || is_first_selected())
top_line = 0;
- if (selected < visible_items && top_line + visible_lines >= visible_items)
- top_line = visible_items - visible_lines;
+ if (selected < visible_items && top_line + m_visible_lines >= visible_items)
+ top_line = visible_items - m_visible_lines;
// determine effective positions taking into account the hilighting arrows
float effective_width = visible_width - 2.0f * gutter_width;
float effective_left = visible_left + gutter_width;
- int n_loop = (visible_items >= visible_lines) ? visible_lines : visible_items;
if (m_prev_selected != nullptr && m_focus == focused_menu::main && selected < visible_items)
m_prev_selected = nullptr;
+ int const n_loop = (std::min)(m_visible_lines, visible_items);
for (int linenum = 0; linenum < n_loop; linenum++)
{
float line_y = visible_top + (float)linenum * line_height;
@@ -1532,32 +1534,33 @@ void menu::draw_select_game(UINT32 flags)
hilight_main_texture, PRIMFLAG_BLENDMODE(BLENDMODE_ALPHA) | PRIMFLAG_TEXWRAP(TRUE));
}
- // if we're on the top line, display the up arrow
if (linenum == 0 && top_line != 0)
{
+ // if we're on the top line, display the up arrow
draw_arrow(container, 0.5f * (x1 + x2) - 0.5f * ud_arrow_width, line_y + 0.25f * line_height,
0.5f * (x1 + x2) + 0.5f * ud_arrow_width, line_y + 0.75f * line_height, fgcolor, ROT0);
if (hover == itemnum)
hover = HOVER_ARROW_UP;
}
- // if we're on the bottom line, display the down arrow
- else if (linenum == visible_lines - 1 && itemnum != visible_items - 1)
+ else if (linenum == m_visible_lines - 1 && itemnum != visible_items - 1)
{
+ // if we're on the bottom line, display the down arrow
draw_arrow(container, 0.5f * (x1 + x2) - 0.5f * ud_arrow_width, line_y + 0.25f * line_height,
0.5f * (x1 + x2) + 0.5f * ud_arrow_width, line_y + 0.75f * line_height, fgcolor, ROT0 ^ ORIENTATION_FLIP_Y);
if (hover == itemnum)
hover = HOVER_ARROW_DOWN;
}
- // if we're just a divider, draw a line
else if (pitem.type == menu_item_type::SEPARATOR)
+ {
+ // if we're just a divider, draw a line
container->add_line(visible_left, line_y + 0.5f * line_height, visible_left + visible_width, line_y + 0.5f * line_height,
UI_LINE_WIDTH, UI_TEXT_COLOR, PRIMFLAG_BLENDMODE(BLENDMODE_ALPHA));
-
- // draw the item centered
+ }
else if (pitem.subtext.empty())
{
+ // draw the item centered
int item_invert = pitem.flags & FLAG_INVERT;
auto icon = draw_icon(linenum, item[itemnum].ref, effective_left, line_y);
ui().draw_text_full(container, itemtext, effective_left + icon, line_y, effective_width - icon, ui::text_layout::LEFT, ui::text_layout::TRUNCATE,
@@ -1635,7 +1638,7 @@ void menu::draw_select_game(UINT32 flags)
custom_render(get_selection_ref(), customtop, custombottom, x1, y1, x2, y2);
// return the number of visible lines, minus 1 for top arrow and 1 for bottom arrow
- visitems = visible_lines - (top_line != 0) - (top_line + visible_lines != visible_items);
+ m_visible_items = m_visible_lines - (top_line != 0) - (top_line + m_visible_lines != visible_items);
// reset redraw icon stage
if (!is_swlist) ui_globals::redraw_icon = false;
@@ -1796,11 +1799,11 @@ void menu::handle_main_keys(UINT32 flags)
selected++;
- if (selected == top_line + visitems + (top_line != 0))
+ if (selected == top_line + m_visible_items + (top_line != 0))
top_line++;
}
- // page up backs up by visitems
+ // page up backs up by m_visible_items
if (exclusive_input_pressed(IPT_UI_PAGE_UP, 6))
{
// Infos
@@ -1813,16 +1816,16 @@ void menu::handle_main_keys(UINT32 flags)
if (selected < visible_items && !ui_error)
{
- selected -= visitems;
+ selected -= m_visible_items;
if (selected < 0)
selected = 0;
- top_line -= visitems - (top_line + visible_lines == visible_items);
+ top_line -= m_visible_items - (top_line + m_visible_lines == visible_items);
}
}
- // page down advances by visitems
+ // page down advances by m_visible_items
if (exclusive_input_pressed(IPT_UI_PAGE_DOWN, 6))
{
// Infos
@@ -1835,12 +1838,12 @@ void menu::handle_main_keys(UINT32 flags)
if (selected < visible_items && !ui_error)
{
- selected += visible_lines - 2 + (selected == 0);
+ selected += m_visible_lines - 2 + (selected == 0);
if (selected >= visible_items)
selected = visible_items - 1;
- top_line += visible_lines - 2;
+ top_line += m_visible_lines - 2;
}
}
@@ -1950,18 +1953,18 @@ void menu::handle_main_events()
}
else if (hover == HOVER_ARROW_UP)
{
- selected -= visitems;
+ selected -= m_visible_items;
if (selected < 0)
selected = 0;
- top_line -= visitems - (top_line + visible_lines == visible_items);
+ top_line -= m_visible_items - (top_line + m_visible_lines == visible_items);
set_pressed();
}
else if (hover == HOVER_ARROW_DOWN)
{
- selected += visible_lines - 2 + (selected == 0);
+ selected += m_visible_lines - 2 + (selected == 0);
if (selected >= visible_items)
selected = visible_items - 1;
- top_line += visible_lines - 2;
+ top_line += m_visible_lines - 2;
set_pressed();
}
else if (hover == HOVER_UI_RIGHT)
@@ -2065,7 +2068,7 @@ void menu::handle_main_events()
selected += local_menu_event.num_lines;
if (selected > visible_items - 1)
selected = visible_items - 1;
- if (selected >= top_line + visitems + (top_line != 0))
+ if (selected >= top_line + m_visible_items + (top_line != 0))
top_line += local_menu_event.num_lines;
}
}
@@ -2740,7 +2743,7 @@ void menu::draw_palette_menu()
custom_render(get_selection_ref(), customtop, custombottom, x1, y1, x2, y2);
// return the number of visible lines, minus 1 for top arrow and 1 for bottom arrow
- visitems = visible_lines - (top_line != 0) - (top_line + visible_lines != item.size());
+ m_visible_items = visible_lines - (top_line != 0) - (top_line + visible_lines != item.size());
}
//-------------------------------------------------
@@ -2775,8 +2778,8 @@ void menu::draw_dats_menu()
// account for extra space at the top and bottom
float visible_main_menu_height = 1.0f - 2.0f * UI_BOX_TB_BORDER - visible_extra_menu_height;
- visible_lines = floor(visible_main_menu_height / line_height);
- visible_main_menu_height = (float)(visible_lines * line_height);
+ m_visible_lines = int(std::trunc(visible_main_menu_height / line_height));
+ visible_main_menu_height = float(m_visible_lines) * line_height;
// compute top/left of inner menu area by centering
float visible_top = (1.0f - (visible_main_menu_height + visible_extra_menu_height)) * 0.5f;
@@ -2789,23 +2792,20 @@ void menu::draw_dats_menu()
float y1 = visible_top - UI_BOX_TB_BORDER;
float x2 = x1 + visible_width;
float y2 = visible_top + visible_main_menu_height + UI_BOX_TB_BORDER + extra_height;
- float line = visible_top + (float)(visible_lines * line_height);
+ float line = visible_top + float(m_visible_lines) * line_height;
ui().draw_outlined_box(container, x1, y1, x2, y2, UI_BACKGROUND_COLOR);
- if (visible_items < visible_lines)
- visible_lines = visible_items;
- if (top_line < 0)
- top_line = 0;
- if (top_line + visible_lines >= visible_items)
- top_line = visible_items - visible_lines;
+ m_visible_lines = (std::min)(visible_items, m_visible_lines);
+ top_line = (std::max)(0, top_line);
+ if (top_line + m_visible_lines >= visible_items)
+ top_line = visible_items - m_visible_lines;
// determine effective positions taking into account the hilighting arrows
float effective_width = visible_width - 2.0f * gutter_width;
float effective_left = visible_left + gutter_width;
- int n_loop = (visible_items >= visible_lines) ? visible_lines : visible_items;
-
+ int const n_loop = (std::min)(visible_items, m_visible_lines);
for (int linenum = 0; linenum < n_loop; linenum++)
{
float line_y = visible_top + (float)linenum * line_height;
@@ -2834,7 +2834,7 @@ void menu::draw_dats_menu()
}
}
// if we're on the bottom line, display the down arrow
- else if (linenum == visible_lines - 1 && itemnum != visible_items - 1)
+ else if (linenum == m_visible_lines - 1 && itemnum != visible_items - 1)
{
draw_arrow(container, 0.5f * (x1 + x2) - 0.5f * ud_arrow_width, line_y + 0.25f * line_height,
0.5f * (x1 + x2) + 0.5f * ud_arrow_width, line_y + 0.75f * line_height, fgcolor, ROT0 ^ ORIENTATION_FLIP_Y);
@@ -2886,7 +2886,7 @@ void menu::draw_dats_menu()
custom_render(get_selection_ref(), customtop, custombottom, x1, y1, x2, y2);
// return the number of visible lines, minus 1 for top arrow and 1 for bottom arrow
- visitems = visible_lines - (top_line != 0) - (top_line + visible_lines != visible_items);
+ m_visible_items = m_visible_lines - (top_line != 0) - (top_line + m_visible_lines != visible_items);
}
void menu::set_pressed()
diff --git a/src/frontend/mame/ui/menu.h b/src/frontend/mame/ui/menu.h
index 7317150ba9e..7c292a22753 100644
--- a/src/frontend/mame/ui/menu.h
+++ b/src/frontend/mame/ui/menu.h
@@ -54,7 +54,6 @@ public:
render_container *container; // render_container we render to
int hover; // which item is being hovered over
- int visitems; // number of visible items
float customtop; // amount of extra height to add at the top
float custombottom; // amount of extra height to add at the bottom
std::vector<menu_item> item; // array of items
@@ -71,9 +70,6 @@ public:
// allocate temporary memory from the menu's memory pool
void *m_pool_alloc(size_t size);
- // request the specific handling of the game selection main menu
- bool is_special_main_menu() const;
-
// Global initialization
static void init(running_machine &machine, ui_options &mopt);
static void exit(running_machine &machine);
@@ -248,7 +244,6 @@ protected:
menu(mame_ui_manager &mui, render_container *container);
- // free all items in the menu, and all memory allocated from the memory pool
void reset(reset_options options);
void reset_parent(reset_options options) { m_parent->reset(options); }
static void reset_topmost(reset_options options) { if (menu_stack) menu_stack->reset(options); }
@@ -269,6 +264,9 @@ protected:
// changes the index of the currently selected menu item
void set_selection(void *selected_itemref);
+ // scroll position control
+ void centre_selection() { top_line = selected - (m_visible_lines / 2); }
+
// draw right box
float draw_right_box_title(float x1, float y1, float x2, float y2);
@@ -291,7 +289,6 @@ protected:
template <typename T>
static T *topmost_menu() { return dynamic_cast<T *>(menu_stack.get()); }
- int visible_lines; // main box visible lines
int right_visible_lines; // right box lines
static std::unique_ptr<bitmap_argb32> snapx_bitmap;
@@ -319,6 +316,7 @@ private:
static render_texture *icons_texture[];
// request the specific handling of the game selection main menu
+ bool is_special_main_menu() const;
void set_special_main_menu(bool disable);
// push a new menu onto the stack
@@ -348,16 +346,23 @@ private:
float draw_icon(int linenum, void *selectedref, float x1, float y1);
void extra_text_draw_box(float origx1, float origx2, float origy, float yspan, const char *text, int direction);
+ bool first_item_visible() const { return top_line <= 0; }
+ bool last_item_visible() const { return (top_line + m_visible_lines) >= item.size(); }
+
bool m_special_main_menu;
- mame_ui_manager &m_ui; // UI we are attached to
- std::unique_ptr<menu> m_parent; // pointer to parent menu
- bool m_pressed; // mouse button held down
+ mame_ui_manager &m_ui; // UI we are attached to
+ std::unique_ptr<menu> m_parent; // pointer to parent menu
+ bool m_pressed; // mouse button held down
osd_ticks_t m_repeat;
- event m_event; // the UI event that occurred
- pool *m_pool; // list of memory pools
+ event m_event; // the UI event that occurred
+ pool *m_pool; // list of memory pools
focused_menu m_focus;
- int m_resetpos; // reset position
- void *m_resetref; // reset reference
+
+ int m_visible_lines; // main box visible lines
+ int m_visible_items; // number of visible items
+
+ int m_resetpos; // reset position
+ void *m_resetref; // reset reference
static std::vector<const game_driver *> m_old_icons;
diff --git a/src/frontend/mame/ui/swlist.cpp b/src/frontend/mame/ui/swlist.cpp
index e0703323eea..859fdcc6f11 100644
--- a/src/frontend/mame/ui/swlist.cpp
+++ b/src/frontend/mame/ui/swlist.cpp
@@ -306,7 +306,7 @@ void menu_software_list::handle()
if (selected_entry != nullptr && selected_entry != cur_selected)
{
set_selection((void *)selected_entry);
- top_line = selected - (visible_lines / 2);
+ centre_selection();
}
}
}