/*
* Reflow lines from src grid into dst grid based on width sx. Returns number
* of lines fewer in the visible area, or zero.
*/
u_int
grid_reflow(struct grid *dst, const struct grid *src, u_int sx)
{
u_int px, py, line, cell;
int previous_wrapped;
struct grid_line *gl;
px = py = 0;
previous_wrapped = 1;
for (line = 0; line < src->sy + src->hsize; line++) {
gl = src->linedata + line;
if (!previous_wrapped) {
px = 0;
py++;
if (py >= dst->hsize + dst->sy)
grid_scroll_history(dst);
}
for (cell = 0; cell < gl->cellsize; cell++) {
if (px == sx) {
dst->linedata[py].flags |= GRID_LINE_WRAPPED;
px = 0;
py++;
if (py >= dst->hsize + dst->sy)
grid_scroll_history(dst);
}
grid_set_cell(dst, px, py, gl->celldata + cell);
px++;
}
previous_wrapped = gl->flags & GRID_LINE_WRAPPED;
}
py++; /* account for final line, which never wraps */
if (py > src->sy)
return (0);
return (src->sy - py);
}
/* Split this line into several new ones */
static void
grid_reflow_split(struct grid *target, struct grid *gd, u_int sx, u_int yy,
u_int at)
{
struct grid_line *gl = &gd->linedata[yy], *first;
struct grid_cell gc;
u_int line, lines, width, i, xx;
u_int used = gl->cellused;
int flags = gl->flags;
/* How many lines do we need to insert? We know we need at least two. */
if (~gl->flags & GRID_LINE_EXTENDED)
lines = 1 + (gl->cellused - 1) / sx;
else {
lines = 2;
width = 0;
for (i = at; i < used; i++) {
grid_get_cell1(gl, i, &gc);
if (width + gc.data.width > sx) {
lines++;
width = 0;
}
width += gc.data.width;
}
}
/* Insert new lines. */
line = target->sy + 1;
first = grid_reflow_add(target, lines);
/* Copy sections from the original line. */
width = 0;
xx = 0;
for (i = at; i < used; i++) {
grid_get_cell1(gl, i, &gc);
if (width + gc.data.width > sx) {
target->linedata[line].flags |= GRID_LINE_WRAPPED;
line++;
width = 0;
xx = 0;
}
width += gc.data.width;
grid_set_cell(target, xx, line, &gc);
xx++;
}
if (flags & GRID_LINE_WRAPPED)
target->linedata[line].flags |= GRID_LINE_WRAPPED;
/* Move the remainder of the original line. */
gl->cellsize = gl->cellused = at;
gl->flags |= GRID_LINE_WRAPPED;
memcpy(first, gl, sizeof *first);
grid_reflow_dead(gl);
/* Adjust the scroll position. */
if (yy <= gd->hscrolled)
gd->hscrolled += lines - 1;
/*
* If the original line had the wrapped flag and there is still space
* in the last new line, try to join with the next lines.
*/
if (width < sx && (flags & GRID_LINE_WRAPPED))
grid_reflow_join(target, gd, sx, yy, width, 1);
}
/* Join line below onto this one. */
static void
grid_reflow_join(struct grid *target, struct grid *gd, u_int sx, u_int yy,
u_int width, int already)
{
struct grid_line *gl, *from = NULL;
struct grid_cell gc;
u_int lines, left, i, to, line, want = 0;
u_int at;
int wrapped = 1;
/*
* Add a new target line.
*/
if (!already) {
to = target->sy;
gl = grid_reflow_move(target, &gd->linedata[yy]);
} else {
to = target->sy - 1;
gl = &target->linedata[to];
}
at = gl->cellused;
/*
* Loop until no more to consume or the target line is full.
*/
lines = 0;
for (;;) {
/*
* If this is now the last line, there is nothing more to be
* done.
*/
if (yy + 1 + lines == gd->hsize + gd->sy)
break;
line = yy + 1 + lines;
/* If the next line is empty, skip it. */
if (~gd->linedata[line].flags & GRID_LINE_WRAPPED)
wrapped = 0;
if (gd->linedata[line].cellused == 0) {
if (!wrapped)
break;
lines++;
continue;
}
/*
* Is the destination line now full? Copy the first character
* separately because we need to leave "from" set to the last
* line if this line is full.
*/
grid_get_cell1(&gd->linedata[line], 0, &gc);
if (width + gc.data.width > sx)
break;
width += gc.data.width;
grid_set_cell(target, at, to, &gc);
at++;
/* Join as much more as possible onto the current line. */
from = &gd->linedata[line];
for (want = 1; want < from->cellused; want++) {
grid_get_cell1(from, want, &gc);
if (width + gc.data.width > sx)
break;
width += gc.data.width;
grid_set_cell(target, at, to, &gc);
at++;
}
lines++;
/*
* If this line wasn't wrapped or we didn't consume the entire
* line, don't try to join any further lines.
*/
if (!wrapped || want != from->cellused || width == sx)
break;
}
if (lines == 0)
return;
/*
* If we didn't consume the entire final line, then remove what we did
* consume. If we consumed the entire line and it wasn't wrapped,
* remove the wrap flag from this line.
*/
left = from->cellused - want;
if (left != 0) {
grid_move_cells(gd, 0, want, yy + lines, left, 8);
from->cellsize = from->cellused = left;
lines--;
} else if (!wrapped)
gl->flags &= ~GRID_LINE_WRAPPED;
/* Remove the lines that were completely consumed. */
for (i = yy + 1; i < yy + 1 + lines; i++) {
free(gd->linedata[i].celldata);
free(gd->linedata[i].extddata);
grid_reflow_dead(&gd->linedata[i]);
}
/* Adjust scroll position. */
if (gd->hscrolled > to + lines)
gd->hscrolled -= lines;
else if (gd->hscrolled > to)
gd->hscrolled = to;
}
/* Set cell. */
void
grid_view_set_cell(struct grid *gd, u_int px, u_int py,
const struct grid_cell *gc)
{
grid_set_cell(gd, grid_view_x(gd, px), grid_view_y(gd, py), gc);
}
static LRESULT CALLBACK
grid_proc(HWND win, UINT msg, WPARAM wp, LPARAM lp)
{
grid_t* grid = (grid_t*) GetWindowLongPtr(win, 0);
switch(msg) {
case WM_PAINT:
return generic_paint(win, grid->no_redraw,
(grid->style & MC_GS_DOUBLEBUFFER),
grid_paint, grid);
case WM_PRINTCLIENT:
return generic_printclient(win, (HDC) wp, grid_paint, grid);
case WM_NCPAINT:
return generic_ncpaint(win, grid->theme_listview, (HRGN) wp);
case WM_ERASEBKGND:
return generic_erasebkgnd(win, grid->theme_listview, (HDC) wp);
case MC_GM_GETTABLE:
return (LRESULT) grid->table;
case MC_GM_SETTABLE:
return (grid_set_table(grid, (table_t*) lp) == 0 ? TRUE : FALSE);
case MC_GM_GETCOLUMNCOUNT:
return grid->col_count;
case MC_GM_GETROWCOUNT:
return grid->row_count;
case MC_GM_RESIZE:
return (grid_resize_table(grid, LOWORD(wp), HIWORD(wp)) == 0 ? TRUE : FALSE);
case MC_GM_CLEAR:
return (grid_clear(grid, wp) == 0 ? TRUE : FALSE);
case MC_GM_SETCELLW:
case MC_GM_SETCELLA:
return (grid_set_cell(grid, LOWORD(wp), HIWORD(wp), (MC_TABLECELL*)lp,
(msg == MC_GM_SETCELLW)) == 0 ? TRUE : FALSE);
case MC_GM_GETCELLW:
case MC_GM_GETCELLA:
return (grid_get_cell(grid, LOWORD(wp), HIWORD(wp), (MC_TABLECELL*)lp,
(msg == MC_GM_GETCELLW)) == 0 ? TRUE : FALSE);
case MC_GM_SETGEOMETRY:
return (grid_set_geometry(grid, (MC_GGEOMETRY*)lp, TRUE) == 0 ? TRUE : FALSE);
case MC_GM_GETGEOMETRY:
return (grid_get_geometry(grid, (MC_GGEOMETRY*)lp) == 0 ? TRUE : FALSE);
case MC_GM_REDRAWCELLS:
return (grid_redraw_cells(grid, LOWORD(wp), HIWORD(wp),
LOWORD(lp), LOWORD(lp)) == 0 ? TRUE : FALSE);
case MC_GM_SETCOLUMNWIDTH:
return (grid_set_col_width(grid, wp, LOWORD(lp)) == 0 ? TRUE : FALSE);
case MC_GM_GETCOLUMNWIDTH:
return grid_get_col_width(grid, wp);
case MC_GM_SETROWHEIGHT:
return (grid_set_row_height(grid, wp, LOWORD(lp)) == 0 ? TRUE : FALSE);
case MC_GM_GETROWHEIGHT:
return grid_get_row_height(grid, wp);
case WM_SETREDRAW:
grid->no_redraw = !wp;
return 0;
case WM_VSCROLL:
case WM_HSCROLL:
grid_scroll(grid, (msg == WM_VSCROLL), LOWORD(wp), 1);
return 0;
case WM_MOUSEWHEEL:
case WM_MOUSEHWHEEL:
grid_mouse_wheel(grid, (msg == WM_MOUSEWHEEL), (int)(SHORT)HIWORD(wp));
return 0;
case WM_SIZE:
if(!grid->no_redraw) {
int old_scroll_x = grid->scroll_x;
int old_scroll_y = grid->scroll_y;
grid_setup_scrollbars(grid, FALSE);
if(grid->scroll_x != old_scroll_x || grid->scroll_y != old_scroll_y)
InvalidateRect(win, NULL, TRUE);
}
return 0;
case WM_GETFONT:
return (LRESULT) grid->font;
case WM_SETFONT:
grid->font = (HFONT) wp;
if((BOOL) lp && !grid->no_redraw)
InvalidateRect(win, NULL, TRUE);
return 0;
case WM_STYLECHANGED:
if(wp == GWL_STYLE)
grid_style_changed(grid, (STYLESTRUCT*) lp);
break;
case WM_THEMECHANGED:
grid_close_theme(grid);
grid_open_theme(grid);
if(!grid->no_redraw)
RedrawWindow(win, NULL, NULL, RDW_INVALIDATE | RDW_FRAME | RDW_ERASE);
return 0;
case WM_SYSCOLORCHANGE:
if(!grid->no_redraw)
RedrawWindow(win, NULL, NULL, RDW_INVALIDATE | RDW_FRAME | RDW_ERASE);
return 0;
case WM_NOTIFYFORMAT:
if(lp == NF_REQUERY)
grid_notify_format(grid);
return (grid->unicode_notifications ? NFR_UNICODE : NFR_ANSI);
case CCM_SETUNICODEFORMAT:
{
BOOL old = grid->unicode_notifications;
grid->unicode_notifications = (wp != 0);
return old;
}
case CCM_GETUNICODEFORMAT:
return grid->unicode_notifications;
case CCM_SETNOTIFYWINDOW:
{
HWND old = grid->notify_win;
grid->notify_win = (wp ? (HWND) wp : GetAncestor(win, GA_PARENT));
return (LRESULT) old;
}
case CCM_SETWINDOWTHEME:
mcSetWindowTheme(win, (const WCHAR*) lp, NULL);
return 0;
case WM_NCCREATE:
grid = grid_nccreate(win, (CREATESTRUCT*)lp);
if(MC_ERR(grid == NULL))
return FALSE;
SetWindowLongPtr(win, 0, (LONG_PTR)grid);
return TRUE;
case WM_CREATE:
return (grid_create(grid) == 0 ? 0 : -1);
case WM_DESTROY:
grid_destroy(grid);
return 0;
case WM_NCDESTROY:
if(grid)
grid_ncdestroy(grid);
return 0;
}
return DefWindowProc(win, msg, wp, lp);
}
