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Add ALT+UP/DOWN/mouse wheel scroll support

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Before the change, the only way to scroll was usage of page up/down,
it allowed to scroll only by skipping pages, which was not smooth.
This commit is contained in:
John Hernandez
2023-11-13 12:40:27 +01:00
parent 08d2a51ae4
commit 23692fedff
5 changed files with 60 additions and 21 deletions
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46
src/ui/window.c
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@@ -623,17 +623,20 @@ win_free(ProfWin* window)
}
void
win_page_up(ProfWin* window)
win_page_up(ProfWin* window, int scroll_size)
{
_reached_bottom_of_database = FALSE;
int rows = getmaxy(stdscr);
int y = getcury(window->layout->win);
int total_rows = getcury(window->layout->win);
int page_space = rows - 4;
int* page_start = &(window->layout->y_pos);
int page_start_initial = *page_start;
if (scroll_size == 0)
scroll_size = page_space;
*page_start -= page_space;
*page_start -= scroll_size;
if (*page_start == -page_space && window->type == WIN_CHAT) {
if (*page_start == -scroll_size && window->type == WIN_CHAT) {
ProfChatWin* chatwin = (ProfChatWin*)window;
ProfBuffEntry* first_entry = buffer_size(window->layout->buffer) != 0 ? buffer_get_entry(window->layout->buffer, 0) : NULL;
@@ -655,27 +658,33 @@ win_page_up(ProfWin* window)
*page_start = 0;
window->layout->paged = 1;
win_update_virtual(window);
// update only if position has changed
if (page_start_initial != *page_start) {
win_update_virtual(window);
}
// switch off page if last line and space line visible
if ((y) - *page_start == page_space) {
if ((total_rows) - *page_start == page_space) {
window->layout->paged = 0;
}
}
void
win_page_down(ProfWin* window)
win_page_down(ProfWin* window, int scroll_size)
{
_reached_top_of_database = FALSE;
int rows = getmaxy(stdscr);
int y = getcury(window->layout->win);
int page_space = rows - 4;
int* page_start = &(window->layout->y_pos);
int total_rows = getcury(window->layout->win);
int page_space = rows - 4;
int page_start_initial = *page_start;
if (scroll_size == 0)
scroll_size = page_space;
*page_start += page_space;
*page_start += scroll_size;
// Scrolled down after reaching the bottom of the page
if ((*page_start == y || (*page_start == page_space && *page_start >= y)) && window->type == WIN_CHAT) {
if ((*page_start == total_rows || (*page_start == page_space && *page_start >= total_rows)) && window->type == WIN_CHAT) {
int bf_size = buffer_size(window->layout->buffer);
if (bf_size > 0) {
auto_gchar gchar* start = g_date_time_format_iso8601(buffer_get_entry(window->layout->buffer, bf_size - 1)->time);
@@ -691,18 +700,21 @@ win_page_down(ProfWin* window)
}
// only got half a screen, show full screen
if ((y - (*page_start)) < page_space)
*page_start = y - page_space;
if ((total_rows - (*page_start)) < page_space)
*page_start = total_rows - page_space;
// went past end, show full screen
else if (*page_start >= y)
*page_start = y - page_space - 1;
else if (*page_start >= total_rows)
*page_start = total_rows - page_space - 1;
window->layout->paged = 1;
win_update_virtual(window);
// update only if position has changed
if (page_start_initial != *page_start) {
win_update_virtual(window);
}
// switch off page if last line and space line visible
if ((y) - *page_start == page_space) {
if ((total_rows) - *page_start == page_space) {
window->layout->paged = 0;
}
}