perf ui: Start breaking down newt.c into multiple files
As new TUI features get added the newt.c file is growing a lot and its name is growing misleading as an effort is being made to reduce the coupling with libnewt. Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> LKML-Reference: <new-submission> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Arnaldo Carvalho de Melo
313
tools/perf/util/ui/browser.c
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313
tools/perf/util/ui/browser.c
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#define _GNU_SOURCE
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#include <stdio.h>
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#undef _GNU_SOURCE
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/*
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* slang versions <= 2.0.6 have a "#if HAVE_LONG_LONG" that breaks
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* the build if it isn't defined. Use the equivalent one that glibc
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* has on features.h.
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*/
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#include <features.h>
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#ifndef HAVE_LONG_LONG
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#define HAVE_LONG_LONG __GLIBC_HAVE_LONG_LONG
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#endif
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#include <slang.h>
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#include <linux/list.h>
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#include <linux/rbtree.h>
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#include <stdlib.h>
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#include <sys/ttydefaults.h>
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#include "browser.h"
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#include "../color.h"
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#include "../util.h"
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#if SLANG_VERSION < 20104
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#define sltt_set_color(obj, name, fg, bg) \
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SLtt_set_color(obj,(char *)name, (char *)fg, (char *)bg)
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#else
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#define sltt_set_color SLtt_set_color
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#endif
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newtComponent newt_form__new(void);
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int ui_browser__percent_color(double percent, bool current)
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{
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if (current)
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return HE_COLORSET_SELECTED;
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if (percent >= MIN_RED)
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return HE_COLORSET_TOP;
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if (percent >= MIN_GREEN)
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return HE_COLORSET_MEDIUM;
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return HE_COLORSET_NORMAL;
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}
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void ui_browser__list_head_seek(struct ui_browser *self, off_t offset, int whence)
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{
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struct list_head *head = self->entries;
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struct list_head *pos;
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switch (whence) {
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case SEEK_SET:
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pos = head->next;
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break;
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case SEEK_CUR:
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pos = self->first_visible_entry;
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break;
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case SEEK_END:
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pos = head->prev;
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break;
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default:
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return;
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}
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if (offset > 0) {
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while (offset-- != 0)
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pos = pos->next;
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} else {
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while (offset++ != 0)
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pos = pos->prev;
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}
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self->first_visible_entry = pos;
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}
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void ui_browser__rb_tree_seek(struct ui_browser *self, off_t offset, int whence)
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{
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struct rb_root *root = self->entries;
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struct rb_node *nd;
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switch (whence) {
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case SEEK_SET:
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nd = rb_first(root);
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break;
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case SEEK_CUR:
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nd = self->first_visible_entry;
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break;
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case SEEK_END:
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nd = rb_last(root);
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break;
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default:
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return;
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}
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if (offset > 0) {
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while (offset-- != 0)
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nd = rb_next(nd);
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} else {
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while (offset++ != 0)
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nd = rb_prev(nd);
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}
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self->first_visible_entry = nd;
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}
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unsigned int ui_browser__rb_tree_refresh(struct ui_browser *self)
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{
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struct rb_node *nd;
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int row = 0;
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if (self->first_visible_entry == NULL)
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self->first_visible_entry = rb_first(self->entries);
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nd = self->first_visible_entry;
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while (nd != NULL) {
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SLsmg_gotorc(self->top + row, self->left);
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self->write(self, nd, row);
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if (++row == self->height)
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break;
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nd = rb_next(nd);
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}
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return row;
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}
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bool ui_browser__is_current_entry(struct ui_browser *self, unsigned row)
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{
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return (self->first_visible_entry_idx + row) == self->index;
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}
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void ui_browser__refresh_dimensions(struct ui_browser *self)
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{
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int cols, rows;
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newtGetScreenSize(&cols, &rows);
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if (self->width > cols - 4)
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self->width = cols - 4;
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self->height = rows - 5;
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if (self->height > self->nr_entries)
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self->height = self->nr_entries;
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self->top = (rows - self->height) / 2;
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self->left = (cols - self->width) / 2;
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}
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void ui_browser__reset_index(struct ui_browser *self)
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{
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self->index = self->first_visible_entry_idx = 0;
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self->seek(self, 0, SEEK_SET);
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}
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int ui_browser__show(struct ui_browser *self, const char *title)
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{
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if (self->form != NULL) {
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newtFormDestroy(self->form);
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newtPopWindow();
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}
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ui_browser__refresh_dimensions(self);
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newtCenteredWindow(self->width, self->height, title);
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self->form = newt_form__new();
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if (self->form == NULL)
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return -1;
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self->sb = newtVerticalScrollbar(self->width, 0, self->height,
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HE_COLORSET_NORMAL,
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HE_COLORSET_SELECTED);
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if (self->sb == NULL)
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return -1;
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newtFormAddHotKey(self->form, NEWT_KEY_UP);
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newtFormAddHotKey(self->form, NEWT_KEY_DOWN);
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newtFormAddHotKey(self->form, NEWT_KEY_PGUP);
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newtFormAddHotKey(self->form, NEWT_KEY_PGDN);
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newtFormAddHotKey(self->form, NEWT_KEY_HOME);
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newtFormAddHotKey(self->form, NEWT_KEY_END);
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newtFormAddComponent(self->form, self->sb);
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return 0;
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}
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int ui_browser__refresh(struct ui_browser *self)
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{
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int row;
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newtScrollbarSet(self->sb, self->index, self->nr_entries - 1);
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row = self->refresh(self);
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SLsmg_set_color(HE_COLORSET_NORMAL);
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SLsmg_fill_region(self->top + row, self->left,
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self->height - row, self->width, ' ');
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return 0;
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}
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int ui_browser__run(struct ui_browser *self, struct newtExitStruct *es)
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{
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if (ui_browser__refresh(self) < 0)
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return -1;
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while (1) {
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off_t offset;
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newtFormRun(self->form, es);
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if (es->reason != NEWT_EXIT_HOTKEY)
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break;
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if (is_exit_key(es->u.key))
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return es->u.key;
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switch (es->u.key) {
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case NEWT_KEY_DOWN:
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if (self->index == self->nr_entries - 1)
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break;
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++self->index;
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if (self->index == self->first_visible_entry_idx + self->height) {
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++self->first_visible_entry_idx;
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self->seek(self, +1, SEEK_CUR);
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}
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break;
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case NEWT_KEY_UP:
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if (self->index == 0)
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break;
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--self->index;
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if (self->index < self->first_visible_entry_idx) {
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--self->first_visible_entry_idx;
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self->seek(self, -1, SEEK_CUR);
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}
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break;
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case NEWT_KEY_PGDN:
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case ' ':
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if (self->first_visible_entry_idx + self->height > self->nr_entries - 1)
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break;
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offset = self->height;
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if (self->index + offset > self->nr_entries - 1)
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offset = self->nr_entries - 1 - self->index;
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self->index += offset;
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self->first_visible_entry_idx += offset;
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self->seek(self, +offset, SEEK_CUR);
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break;
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case NEWT_KEY_PGUP:
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if (self->first_visible_entry_idx == 0)
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break;
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if (self->first_visible_entry_idx < self->height)
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offset = self->first_visible_entry_idx;
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else
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offset = self->height;
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self->index -= offset;
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self->first_visible_entry_idx -= offset;
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self->seek(self, -offset, SEEK_CUR);
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break;
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case NEWT_KEY_HOME:
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ui_browser__reset_index(self);
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break;
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case NEWT_KEY_END:
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offset = self->height - 1;
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if (offset >= self->nr_entries)
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offset = self->nr_entries - 1;
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self->index = self->nr_entries - 1;
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self->first_visible_entry_idx = self->index - offset;
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self->seek(self, -offset, SEEK_END);
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break;
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default:
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return es->u.key;
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}
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if (ui_browser__refresh(self) < 0)
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return -1;
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}
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return 0;
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}
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unsigned int ui_browser__list_head_refresh(struct ui_browser *self)
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{
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struct list_head *pos;
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struct list_head *head = self->entries;
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int row = 0;
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if (self->first_visible_entry == NULL ||
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self->first_visible_entry == self->entries)
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self->first_visible_entry = head->next;
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pos = self->first_visible_entry;
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list_for_each_from(pos, head) {
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SLsmg_gotorc(self->top + row, self->left);
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self->write(self, pos, row);
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if (++row == self->height)
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break;
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}
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return row;
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}
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static struct newtPercentTreeColors {
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const char *topColorFg, *topColorBg;
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const char *mediumColorFg, *mediumColorBg;
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const char *normalColorFg, *normalColorBg;
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const char *selColorFg, *selColorBg;
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const char *codeColorFg, *codeColorBg;
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} defaultPercentTreeColors = {
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"red", "lightgray",
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"green", "lightgray",
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"black", "lightgray",
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"lightgray", "magenta",
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"blue", "lightgray",
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};
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void ui_browser__init(void)
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{
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struct newtPercentTreeColors *c = &defaultPercentTreeColors;
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sltt_set_color(HE_COLORSET_TOP, NULL, c->topColorFg, c->topColorBg);
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sltt_set_color(HE_COLORSET_MEDIUM, NULL, c->mediumColorFg, c->mediumColorBg);
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sltt_set_color(HE_COLORSET_NORMAL, NULL, c->normalColorFg, c->normalColorBg);
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sltt_set_color(HE_COLORSET_SELECTED, NULL, c->selColorFg, c->selColorBg);
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sltt_set_color(HE_COLORSET_CODE, NULL, c->codeColorFg, c->codeColorBg);
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}
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