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author | 2013-09-18 08:48:36 +0200 | |
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committer | 2013-09-18 08:48:36 +0200 | |
commit | c1c2d4e2581a150a267a8d9851d4492bae8c4f34 (patch) | |
tree | f53351f2fb67aa333cd5d70e1e3fbfee117ba3eb | |
parent | drawFlag(): The function is now aware of wrapped descriptions. However, the w... (diff) | |
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drawFlag(): Moved finding the starting description / wrapped line out of the function into the new static function findFlagStart()
-rw-r--r-- | ufed-curses-checklist.c | 143 |
1 files changed, 83 insertions, 60 deletions
diff --git a/ufed-curses-checklist.c b/ufed-curses-checklist.c index ee11b10..8425997 100644 --- a/ufed-curses-checklist.c +++ b/ufed-curses-checklist.c @@ -19,6 +19,7 @@ static char* lineBuf = NULL; static sFlag* flags = NULL; /* internal prototypes */ +static int findFlagStart(sFlag* flag, int* index, sWrap** wrap, int* line, bool* isFirstWrap); static void free_flags(void); @@ -202,71 +203,26 @@ static void free_flags(void) static int drawflag(sFlag* flag, bool highlight) { - int idx = 0; - int usedY = 0; + // Return early if there is nothing to display: + if (!isFlagLegal(flag)) + return 0; + + // Get the starting description/wrapped line of the flag + int idx = 0; // The description index to start with int line = flag->currline; - char buf[wWidth(List)+1]; - char desc[maxDescWidth]; - sWrap* wrapPart = NULL; + int usedY = 0; // Counts how many lines this flag really needs to display + sWrap* wrapPart = NULL; // Wrap part to begin with/draw bool wrapFirst = true; // The first part, pkg or desc - // Return early if there is nothing to display: - if (!isFlagLegal(flag)) + if ((line < 0) + && (0 == (usedY = findFlagStart(flag, &idx, &wrapPart, &line, &wrapFirst))) ) return 0; - /* Determine with which description to start. - * Overly long description lists might not fit on one screen, - * and therefore must be scrolled instead of the flags - * themselves. - * If descriptions are wrapped, any description must be held - * until wrapPart is either NULL, or a part on the screen is - * reached. - */ - if (line < 0) { - if (-line < getFlagHeight(flag)) { - while (line < 0) { - if (isDescLegal(flag, idx)) { - if (eWrap_normal == e_wrap) { - ++line; - ++usedY; - ++idx; - } else { - /* With wrapped descriptions there are two possible - * situations: - * a) The list of wrapped lines is shorter than the - * lines to be skipped to get this description on - * the screen. In this case the full description - * can be fast forwareded. - * b) The number of lines above the screen is less - * than the number of wrapped parts. In this case - * the first on screen part must be found. - */ - int wrapCount = flag->desc[idx].wrapCount; - wrapPart = flag->desc[idx].wrap; - if (wrapPart && wrapCount && (-line < wrapCount)) { - // Situation b) This description enters screen - while (wrapPart && (line < 0)) { - ++line; - ++usedY; - wrapPart = wrapPart->next; - if (wrapPart && !wrapPart->pos) - wrapFirst = false; - // Note: The wrap parts are already calculated - // to resemble the current order. - } - } else { - // Situation a) Fast forward - line += wrapCount; - usedY += wrapCount; - ++idx; - } - } // End of handling wrapped lines - } // End of having a legal flag - } // end of moving to line 0 - } else - // Otherwise this item is out of the display area - return 0; - } + + char buf[wWidth(List)+1]; + char desc[maxDescWidth]; + + memset(buf, 0, sizeof(char) * (wWidth(List)+1)); @@ -715,6 +671,73 @@ static int callback(sFlag** curr, int key) return -1; } +/** @brief find the first description/wrapped part drawn on line 0. + * + * Determine with which description to start. + * Overly long description lists might not fit on one screen, + * and therefore must be scrolled instead of the flags + * themselves. + * If descriptions are wrapped, any description must be held + * until wrapPart is either NULL, or a part on the screen is + * reached. +**/ +static int findFlagStart(sFlag* flag, int* index, sWrap** wrap, int* line, bool* isFirstWrap) +{ + int usedLines = 0; + int flagHeight = getFlagHeight(flag); // Will recalculate wrap parts if needed + sWrap* wrapPart = NULL; + + if ( (*line < 0) && (-(*line) < flagHeight) ){ + + while (*line < 0) { + if (isDescLegal(flag, *index)) { + if (eWrap_normal == e_wrap) { + ++(*line); + ++usedLines; + ++(*index); + } else { + /* With wrapped descriptions there are two possible + * situations: + * a) The list of wrapped lines is shorter than the + * lines to be skipped to get this description on + * the screen. In this case the full description + * can be fast forwareded. + * b) The number of lines above the screen is less + * than the number of wrapped parts. In this case + * the first on screen part must be found. + */ + int wrapCount = flag->desc[*index].wrapCount; + wrapPart = flag->desc[*index].wrap; + *isFirstWrap = true; + if (wrapPart && wrapCount && (-(*line) < wrapCount)) { + // Situation b) This description enters screen + while (wrapPart && (*line < 0)) { + ++(*line); + ++usedLines; + wrapPart = wrapPart->next; + if (wrapPart && !wrapPart->pos) + *isFirstWrap = false; + // Note: The wrap parts are already calculated + // to resemble the current order. + } + } else { + // Situation a) Fast forward + *line += wrapCount; + usedLines += wrapCount; + ++(*index); + } + } // End of handling wrapped lines + } // End of having a legal flag + } // end of moving to line 0 + + // Write back wrapPart: + *wrap = wrapPart; + } + + return usedLines; +} + + int main(void) { int result = EXIT_SUCCESS; |