From 3d8536642e0a252737588654a9142962348302d6 Mon Sep 17 00:00:00 2001 From: phillbush Date: Wed, 29 Jul 2020 11:37:38 -0300 Subject: [PATCH] Drawing menus on demand, reordering functions --- xmenu.c | 290 ++++++++++++++++++++++++++++---------------------------- xmenu.h | 1 + 2 files changed, 146 insertions(+), 145 deletions(-) diff --git a/xmenu.c b/xmenu.c index 6305a13..a80876d 100644 --- a/xmenu.c +++ b/xmenu.c @@ -37,15 +37,9 @@ static struct Menu *allocmenu(struct Menu *parent, struct Item *list, unsigned l static struct Menu *buildmenutree(unsigned level, const char *label, const char *output, char *file); static struct Menu *parsestdin(void); -/* image loader */ -static Imlib_Image loadicon(const char *file); - -/* utf8 utils */ +/* text drawer, and its helper routine */ static FcChar32 getnextutf8char(const char *s, const char **end_ret); - -/* pixmap drawers */ static int drawtext(XftDraw *draw, XftColor *color, int x, int y, unsigned h, const char *text); -static void drawitems(struct Menu *menu); /* structure setters, and their helper routines */ static void setupitems(struct Menu *menu); @@ -56,9 +50,13 @@ static void setupmenu(struct Menu *menu, XClassHint *classh); static void grabpointer(void); static void grabkeyboard(void); -/* window drawers and mappers */ +/* item drawer, and its helper routine */ +static Imlib_Image loadicon(const char *file); +static void drawitems(struct Menu *menu); + +/* menu drawers and mappers */ +static void drawmenus(struct Menu *currmenu); static void mapmenu(struct Menu *currmenu); -static void copypixmaps(struct Menu *currmenu); /* getters */ static struct Menu *getmenu(struct Menu *currmenu, Window win); @@ -407,6 +405,7 @@ allocmenu(struct Menu *parent, struct Item *list, unsigned level) menu->x = 0; /* calculated by setupmenu() */ menu->y = 0; /* calculated by setupmenu() */ menu->level = level; + menu->drawn = 0; swa.override_redirect = (wflag) ? False : True; swa.background_pixel = dc.normal[ColorBG].pixel; @@ -525,43 +524,15 @@ parsestdin(void) return rootmenu; } -/* load and scale icon */ -static Imlib_Image -loadicon(const char *file) -{ - Imlib_Image icon; - int width; - int height; - int imgsize; - - icon = imlib_load_image(file); - if (icon == NULL) - errx(1, "cannot load icon %s", file); - - imlib_context_set_image(icon); - - width = imlib_image_get_width(); - height = imlib_image_get_height(); - imgsize = MIN(width, height); - - icon = imlib_create_cropped_scaled_image(0, 0, imgsize, imgsize, - config.iconsize, - config.iconsize); - - return icon; -} - -/* get next utf8 char from s return its codepoint and set next_ret to pointer to next character */ +/* get next utf8 char from s return its codepoint and set next_ret to pointer to end of character */ static FcChar32 getnextutf8char(const char *s, const char **next_ret) { - /* */ static const unsigned char utfbyte[] = {0x80, 0x00, 0xC0, 0xE0, 0xF0}; - /* */ static const unsigned char utfmask[] = {0xC0, 0x80, 0xE0, 0xF0, 0xF8}; - /* 0xFFFD is the replacement character, used to represent unknown characters */ static const FcChar32 utfmin[] = {0, 0x00, 0x80, 0x800, 0x10000}; static const FcChar32 utfmax[] = {0, 0x7F, 0x7FF, 0xFFFF, 0x10FFFF}; + /* 0xFFFD is the replacement character, used to represent unknown characters */ static const FcChar32 unknown = 0xFFFD; FcChar32 ucode; /* FcChar32 type holds 32 bits */ size_t usize = 0; /* n' of bytes of the utf8 character */ @@ -649,84 +620,6 @@ drawtext(XftDraw *draw, XftColor *color, int x, int y, unsigned h, const char *t return textlen; } -/* draw pixmap for the selected and unselected version of each item on menu */ -static void -drawitems(struct Menu *menu) -{ - struct Item *item; - - for (item = menu->list; item != NULL; item = item->next) { - XftDraw *dsel, *dunsel; - int x, y; - - item->unsel = XCreatePixmap(dpy, menu->win, menu->w, item->h, - DefaultDepth(dpy, screen)); - - XSetForeground(dpy, dc.gc, dc.normal[ColorBG].pixel); - XFillRectangle(dpy, item->unsel, dc.gc, 0, 0, menu->w, item->h); - - if (item->label == NULL) { /* item is separator */ - y = item->h/2; - XSetForeground(dpy, dc.gc, dc.separator.pixel); - XDrawLine(dpy, item->unsel, dc.gc, config.horzpadding, y, - menu->w - config.horzpadding, y); - - item->sel = item->unsel; - } else { - - item->sel = XCreatePixmap(dpy, menu->win, menu->w, item->h, - DefaultDepth(dpy, screen)); - XSetForeground(dpy, dc.gc, dc.selected[ColorBG].pixel); - XFillRectangle(dpy, item->sel, dc.gc, 0, 0, menu->w, item->h); - - /* draw text */ - x = config.horzpadding; - x += (iflag) ? 0 : config.horzpadding + config.iconsize; - dsel = XftDrawCreate(dpy, item->sel, visual, colormap); - dunsel = XftDrawCreate(dpy, item->unsel, visual, colormap); - XSetForeground(dpy, dc.gc, dc.selected[ColorFG].pixel); - drawtext(dsel, &dc.selected[ColorFG], x, 0, item->h, item->label); - XSetForeground(dpy, dc.gc, dc.normal[ColorFG].pixel); - drawtext(dunsel, &dc.normal[ColorFG], x, 0, item->h, item->label); - XftDrawDestroy(dsel); - XftDrawDestroy(dunsel); - - /* draw triangle */ - if (item->submenu != NULL) { - x = menu->w - config.triangle_width - config.horzpadding; - y = (item->h - config.triangle_height + 1) / 2; - - XPoint triangle[] = { - {x, y}, - {x + config.triangle_width, y + config.triangle_height/2}, - {x, y + config.triangle_height}, - {x, y} - }; - - XSetForeground(dpy, dc.gc, dc.selected[ColorFG].pixel); - XFillPolygon(dpy, item->sel, dc.gc, triangle, LEN(triangle), - Convex, CoordModeOrigin); - XSetForeground(dpy, dc.gc, dc.normal[ColorFG].pixel); - XFillPolygon(dpy, item->unsel, dc.gc, triangle, LEN(triangle), - Convex, CoordModeOrigin); - } - - /* draw icon */ - if (item->file != NULL && !iflag) { - item->icon = loadicon(item->file); - - imlib_context_set_drawable(item->sel); - imlib_context_set_image(item->icon); - imlib_render_image_on_drawable(config.horzpadding, config.iconpadding); - - imlib_context_set_drawable(item->unsel); - imlib_context_set_image(item->icon); - imlib_render_image_on_drawable(config.horzpadding, config.iconpadding); - } - } - } -} - /* setup the height, width and icon of the items of a menu */ static void setupitems(struct Menu *menu) @@ -814,7 +707,6 @@ setupmenu(struct Menu *menu, XClassHint *classh) /* setup size and position of menus */ setupitems(menu); - drawitems(menu); setupmenupos(menu); /* update menu geometry */ @@ -887,6 +779,131 @@ grabkeyboard(void) errx(1, "cannot grab keyboard"); } +/* load and scale icon */ +static Imlib_Image +loadicon(const char *file) +{ + Imlib_Image icon; + int width; + int height; + int imgsize; + + icon = imlib_load_image(file); + if (icon == NULL) + errx(1, "cannot load icon %s", file); + + imlib_context_set_image(icon); + + width = imlib_image_get_width(); + height = imlib_image_get_height(); + imgsize = MIN(width, height); + + icon = imlib_create_cropped_scaled_image(0, 0, imgsize, imgsize, + config.iconsize, + config.iconsize); + + return icon; +} + +/* draw pixmap for the selected and unselected version of each item on menu */ +static void +drawitems(struct Menu *menu) +{ + struct Item *item; + + for (item = menu->list; item != NULL; item = item->next) { + XftDraw *dsel, *dunsel; + int x, y; + + item->unsel = XCreatePixmap(dpy, menu->win, menu->w, item->h, + DefaultDepth(dpy, screen)); + + XSetForeground(dpy, dc.gc, dc.normal[ColorBG].pixel); + XFillRectangle(dpy, item->unsel, dc.gc, 0, 0, menu->w, item->h); + + if (item->label == NULL) { /* item is separator */ + y = item->h/2; + XSetForeground(dpy, dc.gc, dc.separator.pixel); + XDrawLine(dpy, item->unsel, dc.gc, config.horzpadding, y, + menu->w - config.horzpadding, y); + + item->sel = item->unsel; + } else { + + item->sel = XCreatePixmap(dpy, menu->win, menu->w, item->h, + DefaultDepth(dpy, screen)); + XSetForeground(dpy, dc.gc, dc.selected[ColorBG].pixel); + XFillRectangle(dpy, item->sel, dc.gc, 0, 0, menu->w, item->h); + + /* draw text */ + x = config.horzpadding; + x += (iflag) ? 0 : config.horzpadding + config.iconsize; + dsel = XftDrawCreate(dpy, item->sel, visual, colormap); + dunsel = XftDrawCreate(dpy, item->unsel, visual, colormap); + XSetForeground(dpy, dc.gc, dc.selected[ColorFG].pixel); + drawtext(dsel, &dc.selected[ColorFG], x, 0, item->h, item->label); + XSetForeground(dpy, dc.gc, dc.normal[ColorFG].pixel); + drawtext(dunsel, &dc.normal[ColorFG], x, 0, item->h, item->label); + XftDrawDestroy(dsel); + XftDrawDestroy(dunsel); + + /* draw triangle */ + if (item->submenu != NULL) { + x = menu->w - config.triangle_width - config.horzpadding; + y = (item->h - config.triangle_height + 1) / 2; + + XPoint triangle[] = { + {x, y}, + {x + config.triangle_width, y + config.triangle_height/2}, + {x, y + config.triangle_height}, + {x, y} + }; + + XSetForeground(dpy, dc.gc, dc.selected[ColorFG].pixel); + XFillPolygon(dpy, item->sel, dc.gc, triangle, LEN(triangle), + Convex, CoordModeOrigin); + XSetForeground(dpy, dc.gc, dc.normal[ColorFG].pixel); + XFillPolygon(dpy, item->unsel, dc.gc, triangle, LEN(triangle), + Convex, CoordModeOrigin); + } + + /* draw icon */ + if (item->file != NULL && !iflag) { + item->icon = loadicon(item->file); + + imlib_context_set_drawable(item->sel); + imlib_context_set_image(item->icon); + imlib_render_image_on_drawable(config.horzpadding, config.iconpadding); + imlib_context_set_drawable(item->unsel); + imlib_render_image_on_drawable(config.horzpadding, config.iconpadding); + } + } + } +} + +/* copy pixmaps of items of the current menu and of its ancestors into menu window */ +static void +drawmenus(struct Menu *currmenu) +{ + struct Menu *menu; + struct Item *item; + + for (menu = currmenu; menu != NULL; menu = menu->parent) { + if (!menu->drawn) { + drawitems(menu); + menu->drawn = 1; + } + for (item = menu->list; item != NULL; item = item->next) { + if (item == menu->selected) + XCopyArea(dpy, item->sel, menu->win, dc.gc, 0, 0, + menu->w, item->h, 0, item->y); + else + XCopyArea(dpy, item->unsel, menu->win, dc.gc, 0, 0, + menu->w, item->h, 0, item->y); + } + } +} + /* umap previous menus and map current menu and its parents */ static void mapmenu(struct Menu *currmenu) @@ -946,25 +963,6 @@ mapmenu(struct Menu *currmenu) prevmenu = currmenu; } -/* copy pixmaps of items of the current menu and of its ancestors into menu window */ -static void -copypixmaps(struct Menu *currmenu) -{ - struct Menu *menu; - struct Item *item; - - for (menu = currmenu; menu != NULL; menu = menu->parent) { - for (item = menu->list; item != NULL; item = item->next) { - if (item == menu->selected) - XCopyArea(dpy, item->sel, menu->win, dc.gc, 0, 0, - menu->w, item->h, 0, item->y); - else - XCopyArea(dpy, item->unsel, menu->win, dc.gc, 0, 0, - menu->w, item->h, 0, item->y); - } - } -} - /* get menu of given window */ static struct Menu * getmenu(struct Menu *currmenu, Window win) @@ -1051,7 +1049,7 @@ run(struct Menu *currmenu) switch(ev.type) { case Expose: if (ev.xexpose.count == 0) - copypixmaps(currmenu); + drawmenus(currmenu); break; case MotionNotify: menu = getmenu(currmenu, ev.xbutton.window); @@ -1067,7 +1065,7 @@ run(struct Menu *currmenu) currmenu = menu; } mapmenu(currmenu); - copypixmaps(currmenu); + drawmenus(currmenu); break; case ButtonRelease: menu = getmenu(currmenu, ev.xbutton.window); @@ -1085,7 +1083,7 @@ selectitem: } mapmenu(currmenu); currmenu->selected = currmenu->list; - copypixmaps(currmenu); + drawmenus(currmenu); break; case ButtonPress: menu = getmenu(currmenu, ev.xbutton.window); @@ -1121,12 +1119,12 @@ selectitem: } else break; currmenu->selected = item; - copypixmaps(currmenu); + drawmenus(currmenu); break; case LeaveNotify: previtem = NULL; currmenu->selected = NULL; - copypixmaps(currmenu); + drawmenus(currmenu); break; case ConfigureNotify: menu = getmenu(currmenu, ev.xconfigure.window); @@ -1161,9 +1159,11 @@ cleanmenu(struct Menu *menu) if (item->submenu != NULL) cleanmenu(item->submenu); tmp = item; - XFreePixmap(dpy, item->unsel); - if (tmp->label != NULL) - XFreePixmap(dpy, item->sel); + if (menu->drawn) { + XFreePixmap(dpy, item->unsel); + if (tmp->label != NULL) + XFreePixmap(dpy, item->sel); + } if (tmp->label != tmp->output) free(tmp->label); free(tmp->output); diff --git a/xmenu.h b/xmenu.h index 0f32fac..2405a8b 100644 --- a/xmenu.h +++ b/xmenu.h @@ -77,6 +77,7 @@ struct Menu { struct Item *list; /* list of items contained by the menu */ struct Item *selected; /* item currently selected in the menu */ int x, y, w, h; /* menu geometry */ + int drawn; /* whether the menu was already drawn */ unsigned level; /* menu level relative to root */ Window win; /* menu window to map on the screen */ };