mirror of
https://github.com/brl/mutter.git
synced 2024-12-22 19:12:04 +00:00
480 lines
9.5 KiB
C
480 lines
9.5 KiB
C
#include "cltr-list.h"
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#include "cltr-private.h"
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#define ANIM_FPS 50
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#define FPS_TO_TIMEOUT(t) (1000/(t))
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struct CltrListCell
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{
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CltrRect rect;
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Pixbuf *thumb_pixb;
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CltrTexture *thumb_texture;
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Pixbuf *text_pixb;
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CltrTexture *text_texture;
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};
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struct CltrList
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{
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CltrWidget widget;
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GList *cells, *active_cell;
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int active_cell_y;
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int cell_height;
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int cell_width;
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int n_cells;
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CltrListCellActivate cell_activate_cb;
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gpointer cell_activate_data;
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CltrListState state;
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int scroll_dir;
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};
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static void
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cltr_list_show(CltrWidget *widget);
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static gboolean
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cltr_list_handle_xevent (CltrWidget *widget, XEvent *xev);
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static void
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cltr_list_paint(CltrWidget *widget);
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static float
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distfunc(CltrList *list, int d)
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{
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int maxdist = list->widget.height;
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d = (maxdist-ABS(d)) ;
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return ( exp( (float)d/maxdist * 0.8 ) / exp(0.8) ) ;
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}
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CltrListCell*
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cltr_list_cell_new(CltrList *list,
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Pixbuf *thumb_pixb,
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char *text)
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{
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CltrListCell *cell = NULL;
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ClutterFont *font;
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PixbufPixel pixel = { 0, 0, 0, 0 }, font_pixel = { 255, 255, 255, 255};
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font = font_new ("Sans Bold 32");
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cell = g_malloc0(sizeof(CltrListCell));
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cell->thumb_pixb = thumb_pixb;
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pixbuf_ref(cell->thumb_pixb);
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cell->thumb_texture = cltr_texture_new(cell->thumb_pixb);
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cell->text_pixb = pixbuf_new(list->cell_width - (list->cell_width/4),
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list->cell_height);
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pixbuf_fill_rect(cell->text_pixb, 0, 0, -1, -1, &pixel);
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font_draw(font, cell->text_pixb, text, 0, 0, &font_pixel);
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cell->text_texture = cltr_texture_new(cell->text_pixb);
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return cell;
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}
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void
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cltr_list_cell_set_pixbuf(CltrListCell *cell,
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Pixbuf *thumb_pixb)
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{
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cltr_texture_unref(cell->thumb_texture);
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cell->thumb_pixb = thumb_pixb;
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cell->thumb_texture = cltr_texture_new(cell->thumb_pixb);
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}
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CltrWidget*
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cltr_list_new(int width,
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int height,
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int cell_width,
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int cell_height)
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{
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CltrList *list;
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list = g_malloc0(sizeof(CltrList));
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list->widget.width = width;
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list->widget.height = height;
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list->widget.show = cltr_list_show;
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list->widget.paint = cltr_list_paint;
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list->cell_height = cell_height; /* maximum */
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list->cell_width = cell_width; /* maximum */
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list->widget.xevent_handler = cltr_list_handle_xevent;
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return CLTR_WIDGET(list);
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}
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void
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cltr_list_append_cell(CltrList *list, CltrListCell *cell)
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{
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list->cells = g_list_append(list->cells, cell);
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if (!list->active_cell)
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list->active_cell = g_list_first(list->cells);
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list->n_cells++;
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}
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/*
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* This is messy hack cos, cells arn't real widgets :(
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*
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*/
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gboolean
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cltr_list_get_active_cell_co_ords(CltrList *list,
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int *x1,
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int *y1,
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int *x2,
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int *y2)
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{
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if (list->active_cell)
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{
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CltrListCell *cell = list->active_cell->data;
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*x1 = cltr_rect_x1(cell->rect);
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*y1 = cltr_rect_y1(cell->rect);
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*x2 = cltr_rect_x2(cell->rect);
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*y2 = cltr_rect_y2(cell->rect);
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return TRUE;
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}
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return FALSE;
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}
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static void
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cltr_list_show(CltrWidget *widget)
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{
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CltrList *list = CLTR_LIST(widget);
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CltrListCell *cell = NULL;
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if (list->active_cell_y == 0)
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{
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list->active_cell_y = (widget->height / 2) - (list->cell_height/2);
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list->active_cell = g_list_first(list->cells);
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cell = list->active_cell->data;
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cell->rect.y = list->active_cell_y;
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}
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list->state = CLTR_LIST_STATE_BROWSE;
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cltr_list_update_layout(list);
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cltr_widget_queue_paint(widget);
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}
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void
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cltr_list_on_activate_cell(CltrList *list,
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CltrListCellActivate callback,
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gpointer *userdata)
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{
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list->cell_activate_cb = callback;
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list->cell_activate_data = userdata;
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}
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CltrListCell*
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cltr_list_get_active_cell(CltrList *list)
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{
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if (list->active_cell)
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return list->active_cell->data;
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return NULL;
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}
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static gboolean
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cltr_list_handle_xevent (CltrWidget *widget, XEvent *xev)
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{
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CltrList *list = CLTR_LIST(widget);
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switch (xev->type)
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{
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case KeyPress:
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{
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KeySym kc;
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kc = XKeycodeToKeysym(xev->xkey.display, xev->xkey.keycode, 0);
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switch (kc)
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{
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case XK_Up:
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case XK_KP_Up:
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cltr_list_scroll_up(list);
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break;
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case XK_Down:
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case XK_KP_Down:
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cltr_list_scroll_down(list);
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break;
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case XK_Return:
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if (list->cell_activate_cb && list->active_cell)
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list->cell_activate_cb(list,
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list->active_cell->data,
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list->cell_activate_data);
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break;
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case XK_Left:
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case XK_KP_Left:
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case XK_Right:
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case XK_KP_Right:
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default:
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CLTR_DBG("unhandled keysym");
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}
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}
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break;
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}
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return TRUE;
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}
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static void
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cltr_list_animate(CltrList *list)
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{
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GList *cell_item = NULL;
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CltrListCell *next_active = NULL, *cell_top = NULL;
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cell_top = (CltrListCell *)g_list_nth_data(list->cells, 0);
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int i = 0;
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for (;;)
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{
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if (list->state == CLTR_LIST_STATE_SCROLL_UP)
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{
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cell_item = g_list_previous(list->active_cell);
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if (!cell_item)
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{
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list->state = CLTR_LIST_STATE_BROWSE;
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return;
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}
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next_active = (CltrListCell *)cell_item->data;
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if (next_active->rect.y < list->active_cell_y)
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{
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cell_top->rect.y += 1;
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}
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else
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{
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list->active_cell = cell_item;
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list->state = CLTR_LIST_STATE_BROWSE;
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return;
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}
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}
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else if (list->state == CLTR_LIST_STATE_SCROLL_DOWN)
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{
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cell_item = g_list_next(list->active_cell);
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if (!cell_item)
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{
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list->state = CLTR_LIST_STATE_BROWSE;
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return;
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}
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next_active = (CltrListCell *)cell_item->data;
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if (next_active->rect.y > list->active_cell_y)
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{
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cell_top->rect.y -= 1;
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}
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else
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{
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list->active_cell = cell_item;
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list->state = CLTR_LIST_STATE_BROWSE;
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return;
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}
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}
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if (++i > 10)
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return;
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cltr_list_update_layout(list);
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}
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}
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gboolean
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cltr_list_timeout_cb(gpointer data)
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{
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CltrList *list = (CltrList *)data;
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cltr_list_animate(list);
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cltr_widget_queue_paint(CLTR_WIDGET(list));
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switch(list->state)
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{
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case CLTR_LIST_STATE_SCROLL_UP:
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case CLTR_LIST_STATE_SCROLL_DOWN:
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return TRUE;
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case CLTR_LIST_STATE_LOADING:
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case CLTR_LIST_STATE_LOAD_COMPLETE:
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case CLTR_LIST_STATE_BROWSE:
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default:
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return FALSE;
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}
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}
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static void
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cltr_list_update_layout(CltrList *list)
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{
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GList *cell_item = NULL;
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CltrListCell *cell = NULL;
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int last;
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cell_item = g_list_first(list->cells);
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cell = (CltrListCell *)cell_item->data;
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last = cell->rect.y;
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while (cell_item)
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{
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float scale = 0.0;
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cell = (CltrListCell *)cell_item->data;
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cell->rect.y = last;
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if (cell->rect.y + cell->rect.height >= 0)
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{
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scale = distfunc(list, cell->rect.y - list->active_cell_y);
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cell->rect.width = list->cell_width * scale;
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cell->rect.height = list->cell_height * scale;
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cell->rect.x = (list->widget.width - cell->rect.width) / 2;
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}
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last = cell->rect.y + cell->rect.height;
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cell_item = g_list_next(cell_item);
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}
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}
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static void
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cltr_list_paint(CltrWidget *widget)
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{
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GList *cell_item = NULL;
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CltrList *list = CLTR_LIST(widget);
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CltrListCell *cell = NULL;
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PixbufPixel col = { 0xff, 0, 0, 0xff };
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int last;
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CLTR_MARK();
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cell_item = g_list_first(list->cells);
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cell = (CltrListCell *)cell_item->data;
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last = cell->rect.y;
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glPushMatrix();
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glEnable(GL_TEXTURE_2D);
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glEnable(GL_BLEND);
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cltr_list_update_layout(list);
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while (cell_item)
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{
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float scale = 0.0;
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col.r = 0xff; col.g = 0; col.b = 0; col.a = 0xff;
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cell = (CltrListCell *)cell_item->data;
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last = cell->rect.y + cell->rect.height;
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scale = distfunc(list, cell->rect.y - list->active_cell_y);
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if (last > 0 && cell->rect.y < list->widget.width) /* crappy clip */
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{
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glDisable(GL_TEXTURE_2D);
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if (cell_item == list->active_cell && list->state == CLTR_LIST_STATE_BROWSE)
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col.b = 0xff;
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else
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col.b = 0x00;
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cltr_glu_rounded_rect_filled(cltr_rect_x1(cell->rect),
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cltr_rect_y1(cell->rect) + (5.0 * scale),
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cltr_rect_x2(cell->rect),
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cltr_rect_y2(cell->rect) - (5.0 * scale),
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10,
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&col);
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col.r = 0xff; col.g = 0xff; col.b = 0xff; col.a = 0xff;
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/*
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cltr_glu_rounded_rect(cltr_rect_x1(cell->rect) + 10,
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cltr_rect_y1(cell->rect) + 12,
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cltr_rect_x2(cell->rect) - 10,
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cltr_rect_y2(cell->rect) - 12,
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10,
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&col);
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*/
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glEnable(GL_TEXTURE_2D);
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glEnable(GL_BLEND);
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glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
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glColor4f(1.0, 1.0, 1.0, 1.0);
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cltr_texture_render_to_gl_quad(cell->text_texture,
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cltr_rect_x1(cell->rect) + 100,
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cltr_rect_y1(cell->rect) + 10,
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cltr_rect_x2(cell->rect) - 100,
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cltr_rect_y2(cell->rect) - 10);
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cltr_texture_render_to_gl_quad(cell->thumb_texture,
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cltr_rect_x1(cell->rect),
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cltr_rect_y1(cell->rect),
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cltr_rect_x1(cell->rect) + 80 ,
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cltr_rect_y1(cell->rect) + 60);
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glDisable(GL_BLEND);
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}
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cell_item = g_list_next(cell_item);
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}
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glDisable(GL_BLEND);
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glDisable(GL_TEXTURE_2D);
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glPopMatrix();
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}
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void
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cltr_list_scroll_down(CltrList *list)
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{
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list->state = CLTR_LIST_STATE_SCROLL_DOWN;
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g_timeout_add(FPS_TO_TIMEOUT(ANIM_FPS),
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cltr_list_timeout_cb, list);
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}
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void
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cltr_list_scroll_up(CltrList *list)
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{
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list->state = CLTR_LIST_STATE_SCROLL_UP;
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g_timeout_add(FPS_TO_TIMEOUT(ANIM_FPS),
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cltr_list_timeout_cb, list);
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}
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