diff options
Diffstat (limited to 'layout.c')
| -rw-r--r-- | layout.c | 123 |
1 files changed, 87 insertions, 36 deletions
@@ -2,13 +2,9 @@ #include "array.h" #include "config.h" -void init_layout(client_state* state) { - -} - -void calculate_layout(client_state* state, rect_t* prompt, rect_t* input, rect_t* options, bool recalc_options) { - +void calculate_layout(client_state* state, rect_t* prompt, rect_t* input, rect_t* options, bool recalc_options, bool recalc_pages) { if (state->prompt && *state->prompt) { + *prompt = (rect_t){ .x = 0, .y = state->line_height * state->lines, .dx = state->prompt_text_buffer.pixel_len + state->horizontal_spacing, .dy = state->line_height }; } else { @@ -31,7 +27,7 @@ void calculate_layout(client_state* state, rect_t* prompt, rect_t* input, rect_t options->dy = state->line_height; } - if (recalc_options) { + if (recalc_options || recalc_pages) { // calculate starting conditions rect_t cur; @@ -56,49 +52,104 @@ void calculate_layout(client_state* state, rect_t* prompt, rect_t* input, rect_t } } - // calculate fancy scroll - if (fancy_scroll && array_size(state->filtered_items) != 0) { + // calculate page indices + if (recalc_pages && !fancy_scroll) { + state->current_page = 0; + array_clear(state->page_indices); - // calculate if we should adjust scrolling if (state->lines) { - // calc vertical scroll - float selected_bot = state->fancy_scroll + state->filtered_items[state->selected_filtered_item].r.y; - float selected_top = selected_bot + state->filtered_items[state->selected_filtered_item].r.dy; - if (selected_bot < options->y) { - state->fancy_scroll -= selected_bot; - } - float diff = selected_top - (options->y + options->dy); - if (diff > 0) { - state->fancy_scroll -= diff; + // this won't work if we add sized images and bullshit to the option list + for (size_t i = 0; i < array_size(state->filtered_items); i += state->lines) { + array_add(state->page_indices, i); } } else { - // calc horizontal scroll - item_display_t* selected = &state->filtered_items[state->selected_filtered_item]; - float selected_left = state->fancy_scroll + selected->r.x; - float selected_right = selected_left + selected->r.dx; - float right_diff = selected_right - (options->x + options->dx); - float left_diff = selected_left - options->x; - - if (selected->r.dx > options->dx) { - state->fancy_scroll -= left_diff; + array_add(state->page_indices, 0); + float page_x = options->x; + size_t i = 0; + array_for_all(item_display_t, display, state->filtered_items) { + // check if past the end of the page + if (((display->r.x + display->r.dx) - page_x) / options->dx >= 1.f) { + page_x = display->r.x; + array_add(state->page_indices, i); + } + ++i; + } + } + } + + if (array_size(state->filtered_items) != 0) { + if (fancy_scroll) { + // calculate fancy scroll offset + if (state->lines) { + // calc vertical scroll + float selected_bot = state->scroll_offset + state->filtered_items[state->selected_filtered_item].r.y; + float selected_top = selected_bot + state->filtered_items[state->selected_filtered_item].r.dy; + if (selected_bot < options->y) { + state->scroll_offset -= selected_bot; + } + float diff = selected_top - (options->y + options->dy); + if (diff > 0) { + state->scroll_offset -= diff; + } + } else { + // calc horizontal scroll + item_display_t* selected = &state->filtered_items[state->selected_filtered_item]; + float selected_left = state->scroll_offset + selected->r.x; + float selected_right = selected_left + selected->r.dx; + float right_diff = selected_right - (options->x + options->dx); + float left_diff = selected_left - options->x; + + if (selected->r.dx > options->dx) { + state->scroll_offset -= left_diff; + } + else if (right_diff > 0) { + state->scroll_offset -= right_diff; + } + else if (left_diff < 0) { + state->scroll_offset -= left_diff; + } } - else if (right_diff > 0) { - state->fancy_scroll -= right_diff; + + // display all filtered items (could be optimized) + state->displayed_item_start = 0; + state->displayed_item_end = array_size(state->filtered_items); + + } else { + // calculate page scroll offset + + // determine what page the selected item is in + size_t selected_page = 0; + size_t selected_page_index = 0; + for(size_t i = 0; i < array_size(state->page_indices); ++i) { + if (state->selected_filtered_item < state->page_indices[i]) { + break; + } + selected_page = i; + selected_page_index = state->page_indices[i]; } - else if (left_diff < 0) { - state->fancy_scroll -= left_diff; + + // determine scroll to put that page at the start + if (state->lines) { + rect_t r = state->filtered_items[selected_page_index].r; + state->scroll_offset = (options->y + options->dy) - (r.y + r.dy); + } else { + rect_t r = state->filtered_items[selected_page_index].r; + state->scroll_offset = options->x - r.x; } + + // display filtered items on the page + state->displayed_item_start = state->page_indices[selected_page]; + state->displayed_item_end = (selected_page + 1 < array_size(state->page_indices)) ? state->page_indices[selected_page + 1] : array_size(state->filtered_items); } // apply scroll offset array_for_all(item_display_t, display, state->filtered_items) { if (state->lines) { - display->r.y += state->fancy_scroll; + display->r.y += state->scroll_offset; } else { - display->r.x += state->fancy_scroll; + display->r.x += state->scroll_offset; } } - - } + } } } |