diff options
Diffstat (limited to 'ScreenManager.c')
| -rw-r--r-- | ScreenManager.c | 433 |
1 files changed, 433 insertions, 0 deletions
diff --git a/ScreenManager.c b/ScreenManager.c new file mode 100644 index 0000000..e7e82e1 --- /dev/null +++ b/ScreenManager.c @@ -0,0 +1,433 @@ +/* +htop - ScreenManager.c +(C) 2004-2011 Hisham H. Muhammad +Released under the GNU GPLv2+, see the COPYING file +in the source distribution for its full text. +*/ + +#include "config.h" // IWYU pragma: keep + +#include "ScreenManager.h" + +#include <assert.h> +#include <stdbool.h> +#include <stdlib.h> +#include <string.h> +#include <sys/time.h> + +#include "CRT.h" +#include "FunctionBar.h" +#include "Machine.h" +#include "Macros.h" +#include "Object.h" +#include "Platform.h" +#include "Process.h" +#include "ProvideCurses.h" +#include "Settings.h" +#include "Table.h" +#include "XUtils.h" + + +ScreenManager* ScreenManager_new(Header* header, Machine* host, State* state, bool owner) { + ScreenManager* this; + this = xMalloc(sizeof(ScreenManager)); + this->x1 = 0; + this->y1 = 0; + this->x2 = 0; + this->y2 = -1; + this->panels = Vector_new(Class(Panel), owner, DEFAULT_SIZE); + this->panelCount = 0; + this->header = header; + this->host = host; + this->state = state; + this->allowFocusChange = true; + return this; +} + +void ScreenManager_delete(ScreenManager* this) { + Vector_delete(this->panels); + free(this); +} + +inline int ScreenManager_size(const ScreenManager* this) { + return this->panelCount; +} + +void ScreenManager_add(ScreenManager* this, Panel* item, int size) { + ScreenManager_insert(this, item, size, Vector_size(this->panels)); +} + +static int header_height(const ScreenManager* this) { + if (this->state->hideMeters) + return 0; + + if (this->header) + return this->header->height; + + return 0; +} + +void ScreenManager_insert(ScreenManager* this, Panel* item, int size, int idx) { + int lastX = 0; + if (idx > 0) { + const Panel* last = (const Panel*) Vector_get(this->panels, idx - 1); + lastX = last->x + last->w + 1; + } + int height = LINES - this->y1 - header_height(this) + this->y2; + if (size <= 0) { + size = COLS - this->x1 + this->x2 - lastX; + } + Panel_resize(item, size, height); + Panel_move(item, lastX, this->y1 + header_height(this)); + if (idx < this->panelCount) { + for (int i = idx + 1; i <= this->panelCount; i++) { + Panel* p = (Panel*) Vector_get(this->panels, i); + Panel_move(p, p->x + size, p->y); + } + } + Vector_insert(this->panels, idx, item); + item->needsRedraw = true; + this->panelCount++; +} + +Panel* ScreenManager_remove(ScreenManager* this, int idx) { + assert(this->panelCount > idx); + int w = ((Panel*) Vector_get(this->panels, idx))->w; + Panel* panel = (Panel*) Vector_remove(this->panels, idx); + this->panelCount--; + if (idx < this->panelCount) { + for (int i = idx; i < this->panelCount; i++) { + Panel* p = (Panel*) Vector_get(this->panels, i); + Panel_move(p, p->x - w, p->y); + } + } + return panel; +} + +void ScreenManager_resize(ScreenManager* this) { + int y1_header = this->y1 + header_height(this); + int panels = this->panelCount; + int lastX = 0; + for (int i = 0; i < panels - 1; i++) { + Panel* panel = (Panel*) Vector_get(this->panels, i); + Panel_resize(panel, panel->w, LINES - y1_header + this->y2); + Panel_move(panel, lastX, y1_header); + lastX = panel->x + panel->w + 1; + } + Panel* panel = (Panel*) Vector_get(this->panels, panels - 1); + Panel_resize(panel, COLS - this->x1 + this->x2 - lastX, LINES - y1_header + this->y2); + Panel_move(panel, lastX, y1_header); +} + +static void checkRecalculation(ScreenManager* this, double* oldTime, int* sortTimeout, bool* redraw, bool* rescan, bool* timedOut, bool* force_redraw) { + Machine* host = this->host; + + Platform_gettime_realtime(&host->realtime, &host->realtimeMs); + double newTime = ((double)host->realtime.tv_sec * 10) + ((double)host->realtime.tv_usec / 100000); + + *timedOut = (newTime - *oldTime > host->settings->delay); + *rescan |= *timedOut; + + if (newTime < *oldTime) { + *rescan = true; // clock was adjusted? + } + + if (*rescan) { + *oldTime = newTime; + int oldUidDigits = Process_uidDigits; + if (!this->state->pauseUpdate && (*sortTimeout == 0 || host->settings->ss->treeView)) { + host->activeTable->needsSort = true; + *sortTimeout = 1; + } + // sample current values for system metrics and processes if not paused + Machine_scan(host); + if (!this->state->pauseUpdate) + Machine_scanTables(host); + + // always update header, especially to avoid gaps in graph meters + Header_updateData(this->header); + // force redraw if the number of UID digits was changed + if (Process_uidDigits != oldUidDigits) { + *force_redraw = true; + } + *redraw = true; + } + if (*redraw) { + Table_rebuildPanel(host->activeTable); + if (!this->state->hideMeters) + Header_draw(this->header); + } + *rescan = false; +} + +static inline bool drawTab(const int* y, int* x, int l, const char* name, bool cur) { + attrset(CRT_colors[cur ? SCREENS_CUR_BORDER : SCREENS_OTH_BORDER]); + mvaddch(*y, *x, '['); + (*x)++; + if (*x >= l) + return false; + int nameLen = strlen(name); + int n = MINIMUM(l - *x, nameLen); + attrset(CRT_colors[cur ? SCREENS_CUR_TEXT : SCREENS_OTH_TEXT]); + mvaddnstr(*y, *x, name, n); + *x += n; + if (*x >= l) + return false; + attrset(CRT_colors[cur ? SCREENS_CUR_BORDER : SCREENS_OTH_BORDER]); + mvaddch(*y, *x, ']'); + *x += 2; + if (*x >= l) + return false; + return true; +} + +static void ScreenManager_drawScreenTabs(ScreenManager* this) { + Settings* settings = this->host->settings; + ScreenSettings** screens = settings->screens; + int cur = settings->ssIndex; + int l = COLS; + Panel* panel = (Panel*) Vector_get(this->panels, 0); + int y = panel->y - 1; + int x = 2; + + if (this->name) { + drawTab(&y, &x, l, this->name, true); + return; + } + + for (int s = 0; screens[s]; s++) { + bool ok = drawTab(&y, &x, l, screens[s]->heading, s == cur); + if (!ok) { + break; + } + } + attrset(CRT_colors[RESET_COLOR]); +} + +static void ScreenManager_drawPanels(ScreenManager* this, int focus, bool force_redraw) { + Settings* settings = this->host->settings; + if (settings->screenTabs) { + ScreenManager_drawScreenTabs(this); + } + const int nPanels = this->panelCount; + for (int i = 0; i < nPanels; i++) { + Panel* panel = (Panel*) Vector_get(this->panels, i); + Panel_draw(panel, + force_redraw, + i == focus, + panel != (Panel*)this->state->mainPanel || !this->state->hideSelection, + State_hideFunctionBar(this->state)); + mvvline(panel->y, panel->x + panel->w, ' ', panel->h + (State_hideFunctionBar(this->state) ? 1 : 0)); + } +} + +void ScreenManager_run(ScreenManager* this, Panel** lastFocus, int* lastKey, const char* name) { + bool quit = false; + int focus = 0; + + Panel* panelFocus = (Panel*) Vector_get(this->panels, focus); + Settings* settings = this->host->settings; + + double oldTime = 0.0; + + int ch = ERR; + int closeTimeout = 0; + + bool timedOut = true; + bool redraw = true; + bool force_redraw = true; + bool rescan = false; + int sortTimeout = 0; + int resetSortTimeout = 5; + + this->name = name; + + while (!quit) { + if (this->header) { + checkRecalculation(this, &oldTime, &sortTimeout, &redraw, &rescan, &timedOut, &force_redraw); + } + + if (redraw || force_redraw) { + ScreenManager_drawPanels(this, focus, force_redraw); + force_redraw = false; + if (this->host->iterationsRemaining != -1) { + if (!--this->host->iterationsRemaining) { + quit = true; + continue; + } + } + } + + int prevCh = ch; + ch = Panel_getCh(panelFocus); + + HandlerResult result = IGNORED; +#ifdef HAVE_GETMOUSE + if (ch == KEY_MOUSE && settings->enableMouse) { + ch = ERR; + MEVENT mevent; + int ok = getmouse(&mevent); + if (ok == OK) { + if (mevent.bstate & BUTTON1_RELEASED) { + if (mevent.y == LINES - 1) { + ch = FunctionBar_synthesizeEvent(panelFocus->currentBar, mevent.x); + } else { + for (int i = 0; i < this->panelCount; i++) { + Panel* panel = (Panel*) Vector_get(this->panels, i); + if (mevent.x >= panel->x && mevent.x <= panel->x + panel->w) { + if (mevent.y == panel->y) { + ch = EVENT_HEADER_CLICK(mevent.x - panel->x); + break; + } else if (settings->screenTabs && mevent.y == panel->y - 1) { + ch = EVENT_SCREEN_TAB_CLICK(mevent.x); + break; + } else if (mevent.y > panel->y && mevent.y <= panel->y + panel->h) { + ch = KEY_MOUSE; + if (panel == panelFocus || this->allowFocusChange) { + focus = i; + panelFocus = panel; + const Object* oldSelection = Panel_getSelected(panel); + Panel_setSelected(panel, mevent.y - panel->y + panel->scrollV - 1); + if (Panel_getSelected(panel) == oldSelection) { + ch = KEY_RECLICK; + } + } + break; + } + } + } + } + #if NCURSES_MOUSE_VERSION > 1 + } else if (mevent.bstate & BUTTON4_PRESSED) { + ch = KEY_WHEELUP; + } else if (mevent.bstate & BUTTON5_PRESSED) { + ch = KEY_WHEELDOWN; + #endif + } + } + } +#endif + if (ch == ERR) { + if (sortTimeout > 0) + sortTimeout--; + if (prevCh == ch && !timedOut) { + closeTimeout++; + if (closeTimeout == 100) { + break; + } + } else { + closeTimeout = 0; + } + redraw = false; + continue; + } + + switch (ch) { + case KEY_ALT('H'): ch = KEY_LEFT; break; + case KEY_ALT('J'): ch = KEY_DOWN; break; + case KEY_ALT('K'): ch = KEY_UP; break; + case KEY_ALT('L'): ch = KEY_RIGHT; break; + } + + redraw = true; + if (Panel_eventHandlerFn(panelFocus)) { + result = Panel_eventHandler(panelFocus, ch); + } + if (result & SYNTH_KEY) { + ch = result >> 16; + } + if (result & REFRESH) { + sortTimeout = 0; + } + if (result & REDRAW) { + force_redraw = true; + } + if (result & RESIZE) { + ScreenManager_resize(this); + force_redraw = true; + } + if (result & RESCAN) { + rescan = true; + sortTimeout = 0; + } + if (result & HANDLED) { + continue; + } else if (result & BREAK_LOOP) { + quit = true; + continue; + } + + switch (ch) { + case KEY_RESIZE: + { + ScreenManager_resize(this); + continue; + } + case KEY_LEFT: + case KEY_CTRL('B'): + if (this->panelCount < 2) { + goto defaultHandler; + } + + if (!this->allowFocusChange) { + break; + } + +tryLeft: + if (focus > 0) { + focus--; + } + + panelFocus = (Panel*) Vector_get(this->panels, focus); + if (Panel_size(panelFocus) == 0 && focus > 0) { + goto tryLeft; + } + + break; + case KEY_RIGHT: + case KEY_CTRL('F'): + case 9: + if (this->panelCount < 2) { + goto defaultHandler; + } + if (!this->allowFocusChange) { + break; + } + +tryRight: + if (focus < this->panelCount - 1) { + focus++; + } + + panelFocus = (Panel*) Vector_get(this->panels, focus); + if (Panel_size(panelFocus) == 0 && focus < this->panelCount - 1) { + goto tryRight; + } + + break; + case '#': + this->state->hideMeters = !this->state->hideMeters; + ScreenManager_resize(this); + force_redraw = true; + break; + case 27: + case 'q': + case KEY_F(10): + quit = true; + continue; + default: +defaultHandler: + sortTimeout = resetSortTimeout; + Panel_onKey(panelFocus, ch); + break; + } + } + + if (lastFocus) { + *lastFocus = panelFocus; + } + + if (lastKey) { + *lastKey = ch; + } +} |