Import XaoS r489 (trunk after version 3.5)

1 files changed, 486 insertions, 0 deletions

diff --git a/src/ui/uihelp.c b/src/ui/uihelp.c
new file mode 100644
index 0000000..d597e25
--- /dev/null
+++ b/src/ui/uihelp.c
@@ -0,0 +1,486 @@
+#include <config.h>
+#ifdef _plan9_
+#include <u.h>
+#include <libc.h>
+#else
+#ifndef NO_MALLOC_H
+#include <malloc.h>
+#endif
+#include <string.h>
+#endif
+
+#include <fconfig.h>
+#include <filter.h>
+#include <fractal.h>
+#include <ui_helper.h>
+#include <ui.h>
+#include <xshl.h>
+#include <xmenu.h>
+#include <grlib.h>
+#include <misc-f.h>
+#include "uiint.h"
+#define HISTORYSIZE 10
+static int historypos;
+static struct xshl_line *lines;
+static int helpwidth, helpheight, helpx, helpy;
+static struct uih_window *helpw;
+static int textheight;
+static char *ui_helppage[HISTORYSIZE];
+static int ui_helppos[HISTORYSIZE];
+int helpvisible;
+
+static struct xshl_item *presseditem;
+static struct xshl_item *selecteditem;
+static int pressedline;
+static int selectedline;
+#define SCROOLSIZE 10
+#define XPOS(xp) (2 * BORDERWIDTH + (xp))
+#define YPOS(yp) (2*BORDERWIDTH+ (yp)-ui_helppos[historypos]+10)
+#define SCROOLSTART (helpx+helpwidth-WBORDERS)
+#define WBORDERS (4*BORDERWIDTH+SCROOLSIZE)
+#define HBORDERS (xtextheight(uih->font)+8*BORDERHEIGHT)
+#define WIDTH  (uih->image->width-WBORDERS)
+#define HEIGHT (uih->image->height-HBORDERS)
+
+static int pressedbutton = -1;
+static int selectedbutton = -1;
+
+#define NBUTTONS 3
+CONST char *CONST names[] = { "OK", "Back", "Main" };
+
+#define BUTTONSTART(i) (helpx+BORDERWIDTH+(helpwidth-2*BORDERWIDTH)/NBUTTONS*(i))
+static void ui_build_help(char *name);
+static void ui_backhelp(void)
+{
+    historypos--;
+    if (historypos < 0)
+	historypos = HISTORYSIZE - 1;
+    ui_build_help(ui_helppage[historypos]);
+}
+
+static void do_button(int i)
+{
+    switch (i) {
+    case 0:
+	ui_close_help();
+	break;
+    case 1:
+	ui_backhelp();
+	break;
+    case 2:
+	ui_help("main");
+	break;
+    }
+}
+
+void ui_close_help(void)
+{
+    if (helpw != NULL) {
+	xshl_free(lines);
+	helpvisible = 0;
+	uih_removew(uih, helpw);
+	uih->display = 1;
+	helpw = NULL;
+    }
+}
+
+static int getwidth(void *data, int flags, CONST char *text)
+{
+    if (uih->image->flags & AAIMAGE)
+	return (xtextwidth(uih->font, text));
+    return (xtextwidth(uih->font, text) - 1);
+}
+
+static void
+helpsize(struct uih_context *c, int *x, int *y, int *width, int *height,
+	 void
+	 *data)
+{
+    *x = helpx;
+    *y = helpy;
+    *width = helpwidth;
+    *height = helpheight;
+}
+
+static void drawhelp(struct uih_context *c, void *data)
+{
+    int i = 0;
+    int y;
+    int percentx, percenty;
+    struct xshl_item *curritem;
+    uih_drawborder(uih, helpx + BORDERWIDTH, helpy + BORDERHEIGHT,
+		   helpwidth - WBORDERS + SCROOLSIZE,
+		   helpheight - HBORDERS, BORDER_PRESSED);
+
+    if (ui_helppos[historypos] > textheight - helpheight / 2 + HBORDERS)
+	ui_helppos[historypos] = textheight - helpheight / 2 + HBORDERS;
+    if (ui_helppos[historypos] < 0)
+	ui_helppos[historypos] = 0;
+
+    /*draw scroolbar */
+    percentx =
+	(helpheight - HBORDERS) * ui_helppos[historypos] / textheight;
+    percenty =
+	(helpheight - HBORDERS) * (ui_helppos[historypos] + helpheight -
+				   HBORDERS) / textheight;
+    if (percentx < BORDERHEIGHT)
+	percentx = BORDERHEIGHT;
+    if (percenty < BORDERHEIGHT)
+	percenty = BORDERHEIGHT;
+    if (percentx > helpheight - HBORDERS - BORDERHEIGHT)
+	percentx = helpheight - HBORDERS - BORDERHEIGHT;
+    if (percenty > helpheight - HBORDERS - BORDERHEIGHT)
+	percenty = helpheight - HBORDERS - BORDERHEIGHT;
+    uih_drawborder(uih, SCROOLSTART, helpy + BORDERHEIGHT + percentx,
+		   SCROOLSIZE - 1, percenty - percentx, 0);
+    for (i = 0; i < NBUTTONS; i++) {
+	ui_drawbutton(names[i], pressedbutton == i, selectedbutton == i,
+		      BUTTONSTART(i) + BORDERWIDTH,
+		      BUTTONSTART(i + 1) - BORDERWIDTH,
+		      helpy + helpheight - BUTTONHEIGHT - BORDERHEIGHT);
+    }
+
+
+    i = 0;
+    while (YPOS(lines[i].y) < 2 * BORDERWIDTH) {
+	i++;
+	if (lines[i].y < 0)
+	    return;
+    }
+    while ((y =
+	    YPOS(lines[i].y)) <
+	   helpheight - HBORDERS - xtextheight(uih->font)
+	   && lines[i].y >= 0) {
+	curritem = lines[i].first;
+	while (curritem != NULL) {
+	    unsigned int bgcolor = BGCOLOR(uih);
+	    unsigned int fgcolor = /*FGCOLOR (uih) */ LIGHTGRAYCOLOR2(uih);
+	    int flags = 0;
+	    int x = XPOS(curritem->x);
+
+	    if (curritem->c.flags & (XSHL_BIG | XSHL_RED))
+		fgcolor = SELCOLOR(uih);
+	    else if (curritem->c.flags & (XSHL_EMPH | XSHL_MONOSPACE))
+		fgcolor =
+		    uih->image->
+		    flags & AAIMAGE ? SELCOLOR(uih) : FGCOLOR(uih);
+	    else if (curritem->c.flags & (XSHL_BLACK))
+		bgcolor = fgcolor = BGCOLOR(uih), flags = TEXT_PRESSED;
+	    else
+		bgcolor = fgcolor, flags |= TEXT_PRESSED;
+	    if (uih->palette->type & BITMAPS) {
+		flags = TEXT_PRESSED;
+		fgcolor = BGCOLOR(uih);
+	    }
+	    if (curritem->c.linktext != NULL) {
+		if (uih->palette->type & BITMAPS) {
+		    if (curritem == presseditem
+			|| curritem == selecteditem)
+			fgcolor =
+			    FGCOLOR(uih), xrectangle(uih->image, x + helpx,
+						     y + helpy,
+						     curritem->width,
+						     xtextheight(uih->
+								 font),
+						     BGCOLOR(uih));
+		    else
+			xhline(uih->image, x + helpx,
+			       y + helpy + xtextheight(uih->font) - 1,
+			       curritem->width, BGCOLOR(uih));
+		} else {
+		    if (uih->image->flags & AAIMAGE)
+			fgcolor = curritem == presseditem
+			    || curritem ==
+			    selecteditem ? SELCOLOR(uih) : BGCOLOR(uih);
+		    else {
+			int i;
+			i = strlen(curritem->c.linktext);
+			if (i > 3
+			    && !strcmp(".xaf",
+				       curritem->c.linktext + i - 4))
+			    xhline(uih->image, x + helpx,
+				   y + helpy + xtextheight(uih->font) - 1,
+				   curritem->width, curritem == presseditem
+				   || curritem ==
+				   selecteditem ? SELCOLOR(uih) :
+				   SELCOLOR(uih));
+			else
+			    xhline(uih->image, x + helpx,
+				   y + helpy + xtextheight(uih->font) - 1,
+				   curritem->width, curritem == presseditem
+				   || curritem ==
+				   selecteditem ? SELCOLOR(uih) :
+				   LIGHTGRAYCOLOR2(uih));
+			xhline(uih->image, x + helpx + 1,
+			       y + helpy + xtextheight(uih->font) - 0,
+			       curritem->width, BGCOLOR(uih));
+		    }
+		    flags = 0;
+		    bgcolor = BGCOLOR(uih);
+		    if (fgcolor == LIGHTGRAYCOLOR2(uih))
+			fgcolor = FGCOLOR(uih);
+		    if (curritem == presseditem
+			|| curritem == selecteditem)
+			fgcolor = SELCOLOR(uih);
+		}
+	    }
+	    xprint(uih->image, uih->font, x + helpx, y + helpy,
+		   curritem->text, fgcolor, bgcolor, flags);
+	    curritem = curritem->next;
+	}
+	i++;
+    }
+}
+
+int ui_helpkeys(int key)
+{
+    int i;
+    if (helpw == NULL)
+	return 0;
+    switch (key) {
+    case 'h':
+	ui_close_help();
+	ui_menu("tutor");
+	return 1;
+    case 'm':
+	ui_help("main");
+	return 1;
+    case UIKEY_DOWN:
+    case 'j':
+	ui_helppos[historypos] += 8, uih->display = 1;
+	presseditem = NULL;
+	selecteditem = NULL;
+	break;
+    case UIKEY_UP:
+    case 'k':
+	ui_helppos[historypos] -= 8, uih->display = 1;
+	presseditem = NULL;
+	selecteditem = NULL;
+	break;
+    case UIKEY_PGDOWN:
+    case '+':
+    case 'f':
+    case ' ':
+	ui_helppos[historypos] +=
+	    helpheight - HBORDERS - 32, uih->display = 1;
+	presseditem = NULL;
+	selecteditem = NULL;
+	break;
+    case UIKEY_PGUP:
+    case '-':
+	ui_helppos[historypos] -=
+	    helpheight - HBORDERS - 32, uih->display = 1;
+	presseditem = NULL;
+	selecteditem = NULL;
+	break;
+    case 'b':
+    case 1:
+	ui_backhelp();
+	break;
+    case UIKEY_ESC:
+    case 'q':
+    case 'c':
+    case 'o':
+	ui_close_help();
+	break;
+    case UIKEY_TAB:
+    case UIKEY_RIGHT:
+	uih->display = 1;
+	if (selectedbutton < 0 || selectedbutton == NBUTTONS - 1) {
+	    if (selecteditem == NULL) {
+		i = 0;
+		while (YPOS(lines[i].y) < 2 * BORDERWIDTH) {
+		    i++;
+		    if (lines[i].y < 0)
+			break;
+		}
+		selecteditem = lines[i].first;
+	    } else
+		i = selectedline, selecteditem = selecteditem->next;
+	    for (;
+		 lines[i].y >= 0
+		 && YPOS(lines[i].y) < helpheight - HBORDERS; i++) {
+		selectedline = i;
+		while (selecteditem != NULL) {
+		    if (selecteditem->c.linktext != NULL) {
+			selectedbutton = -1;
+			return 0;
+		    }
+		    selecteditem = selecteditem->next;
+		}
+		selecteditem = lines[i + 1].first;
+	    }
+	    selecteditem = NULL;
+	    selectedbutton = 0;
+	} else
+	    selectedbutton++;
+	break;
+    case 13:
+    case '\n':
+	if (selecteditem != NULL) {
+	    ui_help(selecteditem->c.linktext);
+	    return 1;
+	}
+	if (selectedbutton >= 0)
+	    do_button(selectedbutton);
+    }
+    return 1;
+}
+
+int ui_helpmouse(int x, int y, int buttons, int flags)
+{
+    static int grabbed = 0;
+    int atpressed = 0;
+    if (helpw == NULL)
+	return 0;
+    if (x < helpx || y < helpy || x > helpx + helpwidth
+	|| y > helpy + helpheight) {
+	if (flags & MOUSE_PRESS)
+	    ui_close_help();
+	pressedbutton = -1;
+	if (pressedbutton != -1)
+	    pressedbutton = -1, uih->display = 1;
+	return 1;
+    } else {
+	if (y > helpy + helpheight - BUTTONHEIGHT - 2 * BORDERHEIGHT) {
+	    int button;
+	    int i;
+	    for (i = 0; i <= NBUTTONS; i++)
+		if (x < BUTTONSTART(i))
+		    break;
+	    button = i - 1;
+	    if (flags & MOUSE_DRAG) {
+		if (pressedbutton != selectedbutton
+		    || pressedbutton != button)
+		    pressedbutton = selectedbutton = button, uih->display =
+			1;
+	    } else {
+		if (pressedbutton != -1)
+		    pressedbutton = -1, uih->display = 1;
+		if (flags & MOUSE_RELEASE)
+		    do_button(button);
+	    }
+	    return 1;
+	}
+	if (pressedbutton != -1)
+	    pressedbutton = -1, uih->display = 1;
+	if (buttons
+	    && ((x > SCROOLSTART && y < helpy + helpheight - HBORDERS)
+		|| grabbed)) {
+	    /*we are in scroolbar */
+	    int pos = (y - helpy) * textheight / (helpheight - HBORDERS);
+	    if (pos != ui_helppos[historypos])
+		ui_helppos[historypos] = pos, uih->display = 1;
+	    grabbed = 1;
+	    return 1;
+	} else
+	    grabbed = 0;
+	y -= helpy + xtextheight(uih->font);
+	x -= 2 * BORDERWIDTH + helpx;
+	pressedbutton = -1;
+	if (presseditem != NULL) {
+	    if (YPOS(lines[pressedline].y) + 1 >= y
+		&& YPOS(lines[pressedline].y) <= y + xtextheight(uih->font)
+		&& presseditem->x <= x
+		&& presseditem->x + presseditem->width >= x)
+		atpressed = 1;
+	}
+	if (flags & MOUSE_PRESS || ((flags & MOUSE_DRAG) && !atpressed)) {
+	    int i = 0;
+	    for (i = 0;
+		 lines[i].y >= 0 && (YPOS(lines[i].y) + 1 <= y
+				     || YPOS(lines[i].y) >=
+				     y + xtextheight(uih->font)); i++);
+	    if (lines[i].y >= 0) {
+		struct xshl_item *item = lines[i].first;
+		while (item != NULL) {
+		    if (item->c.linktext != NULL && item->x <= x
+			&& item->x + item->width >= x)
+			break;
+		    item = item->next;
+		}
+		if (item != NULL) {
+		    uih->display = 1;
+		    presseditem = item;
+		    pressedline = i;
+		}
+	    }
+	} else if (flags & MOUSE_MOVE) {
+	    if (!atpressed && presseditem != NULL)
+		uih->display = 1, presseditem = 0;
+	} else if ((flags & MOUSE_RELEASE)) {
+	    if (atpressed) {
+		ui_help(presseditem->c.linktext);
+		return 1;
+	    }
+	    if (presseditem != NULL)
+		presseditem = NULL, uih->display = 1;
+	    /*odfajruj to! */
+	}
+    }
+    return 1;
+}
+
+static void ui_build_help(char *name)
+{
+    int i;
+    int width;
+    if (ui_nogui) {
+	printf("help \"%s\"\n", name);
+	return;
+    }
+    if (driver->gui_driver && driver->gui_driver->help) {
+	driver->gui_driver->help(uih, name);
+	return;
+    }
+    if (helpw != NULL)
+	ui_close_help();
+    pressedbutton = -1;
+    helpvisible = 1;
+    width = 80 * xtextwidth(uih->font, "w");
+    if (width > WIDTH)
+	width = WIDTH;
+    lines =
+	help_make(name ? name : "main", getwidth, width - 2,
+		  xtextheight(uih->font), xtextheight(uih->font));
+    if (lines == NULL) {
+	lines =
+	    help_make("main", getwidth, width - 2, xtextheight(uih->font),
+		      xtextheight(uih->font));
+	if (lines == NULL) {
+	    helpvisible = 0;
+	    uih_message(uih, "Help file not found");
+	    return;
+	}
+    }
+    width += WBORDERS;
+    uih->display = 1;
+    presseditem = selecteditem = NULL;
+    helpwidth = width;
+    helpx = (uih->image->width - width) / 2;
+    for (i = 0; lines[i].y >= 0; i++);
+    textheight = lines[i - 1].y + 4 * xtextheight(uih->font);
+    if (textheight < HEIGHT)
+	helpheight = textheight;
+    else
+	helpheight = HEIGHT;
+    helpheight += HBORDERS;
+    helpy = (uih->image->height - helpheight) / 2;
+    helpw = uih_registerw(uih, helpsize, drawhelp, 0, DRAWBORDER);
+}
+
+void ui_help(CONST char *name)
+{
+    if (strlen(name) > 4 && !strcmp(name + strlen(name) - 4, ".xaf")) {
+	uih_playtutorial(uih, name);
+	if (helpw != NULL)
+	    ui_close_help();
+	/*FIXME!!!!!!! This needs to be queued! */
+	return;
+    }
+    historypos++;
+    historypos %= HISTORYSIZE;
+    ui_helppage[historypos] = mystrdup(name);	/* NOTE we are not freeing this memory. I believe it is not problem. */
+    ui_helppos[historypos] = 0;
+    ui_build_help(ui_helppage[historypos]);
+}