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author | 2013-09-18 19:44:38 +0200 | |
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committer | 2013-09-18 19:44:38 +0200 | |
commit | 4b8cd2970af58ba9043c1291312df8fc0d71454d (patch) | |
tree | a5f430eb805d74d0aea3551cc448fb8fd8aaa45e | |
parent | drawFlag(): Moved finding the starting description / wrapped line out of the ... (diff) | |
download | ufed-4b8cd2970af58ba9043c1291312df8fc0d71454d.tar.gz ufed-4b8cd2970af58ba9043c1291312df8fc0d71454d.tar.bz2 ufed-4b8cd2970af58ba9043c1291312df8fc0d71454d.zip |
Rewrote drawFlag() and added some helper functions. The mess is consideratly cleared now and the function is much cleaner and more maintainable.
-rw-r--r-- | ufed-curses-checklist.c | 406 |
1 files changed, 218 insertions, 188 deletions
diff --git a/ufed-curses-checklist.c b/ufed-curses-checklist.c index 8425997..b5eef00 100644 --- a/ufed-curses-checklist.c +++ b/ufed-curses-checklist.c @@ -21,6 +21,9 @@ static sFlag* flags = NULL; /* internal prototypes */ static int findFlagStart(sFlag* flag, int* index, sWrap** wrap, int* line, bool* isFirstWrap); static void free_flags(void); +static char getFlagSpecialChar(sFlag* flag, int index); +static void printFlagInfo(char* buf, sFlag* flag, int index, bool printFlagName, bool printFlagState); +static void setFlagWrapDraw(sFlag* flag, int index, sWrap** wrap, size_t* pos, size_t* len, bool* isFirstWrap); /* static functions */ @@ -182,126 +185,74 @@ static void read_flags(void) bottomline = lineNum; } -static void free_flags(void) -{ - sFlag* flag = flags->prev; - - // Clear all flags - while (flags) { - if (flag) - destroyFlag(&flags, &flag); - else - destroyFlag(&flags, &flags); - flag = flags ? flags->prev ? flags->prev : flags : NULL; - } - - // Clear line buffer - if (lineBuf) - free(lineBuf); -} - - static int drawflag(sFlag* flag, bool highlight) { // Return early if there is nothing to display: if (!isFlagLegal(flag)) return 0; - // Get the starting description/wrapped line of the flag + // Basic values for the flag display int idx = 0; // The description index to start with int line = flag->currline; 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 + // Get the starting description/wrapped line of the flag if ((line < 0) && (0 == (usedY = findFlagStart(flag, &idx, &wrapPart, &line, &wrapFirst))) ) return 0; - - char buf[wWidth(List)+1]; - char desc[maxDescWidth]; - - - - memset(buf, 0, sizeof(char) * (wWidth(List)+1)); + // Window values (aka shortcuts) + WINDOW* wLst = win(List); + int lHeight = wHeight(List); + int lWidth = wWidth(List); + + // Set up needed buffers + char buf[lWidth + 1]; // Buffer for the line to print + char desc[maxDescWidth]; // Buffer to assemble the description accoring to e_order and e_desc + char special; // force/mask/none character + memset(buf, 0, sizeof(char) * (lWidth + 1)); + memset(desc, 0, sizeof(char) * maxDescWidth); + + // Description and wrapped lines state values + bool hasBlankLeft = false; // Set to true once the left side is blanked + bool hasBlankRight = false; // Set to true once the right (state) side is blanked + bool hasHead = false; // Set to true once the left side (flag name and states) are printed + size_t length = lWidth - minwidth - 8; // Characters to print + bool newDesc = true; // Set to fals when wrapped parts advance + size_t pos = descriptionleft; // position in desc to start printing on + + // Safety check: Put in blank line if idx ended up too large + if (idx >= flag->ndesc) { + // This can happen when filters reduce the list too much + // so blank lines must be displayed + memset(buf, ' ', lWidth - 1); + buf[lWidth] = '\0'; + waddstr(wLst, buf); + } // print descriptions according to filters - if(idx < flag->ndesc) { - WINDOW* wLst = win(List); - int lHeight = wHeight(List); - bool hasHead = false; - size_t pos = descriptionleft; - size_t length = wWidth(List) - (minwidth + 8); - bool newDesc = true; // Set to false when advanceing wrapped descriptions - char *p, special, *leftend; - - while ( (idx < flag->ndesc) && (line < lHeight) ) { - // Continue if any of the filters apply: - if (newDesc && !isDescLegal(flag, idx)) - continue; - - if (hasHead) { - // Add spaces under the flag display - leftend = newDesc ? buf + minwidth : buf + minwidth + 8; - for(p = buf; p != leftend; ++p) - *p = ' '; - } + while ( (idx < flag->ndesc) && (line < lHeight) ) { - // Preparations when a new description line is started - if (newDesc) { - // Set special character if needed: - if (isDescForced(flag, idx)) - special = 'f'; - else if (isDescMasked(flag, idx)) - special = 'm'; - else - special = ' '; - - // If this is the very first line, the flag data must be written - if (!hasHead) { - /* print the selection, name and state of the flag */ - sprintf(buf, " %c%c%c %s%s%s%-*s ", - /* State of selection */ - flag->stateConf == ' ' ? '(' : '[', - ' ', // Filled in later - flag->stateConf == ' ' ? ')' : ']', - /* name */ - flag->globalForced ? "(" : flag->globalMasked ? "(-" : "", - flag->name, - (flag->globalForced || flag->globalMasked) ? ")" : "", - /* distance */ - (int)(minwidth - - (flag->globalForced ? 3 : flag->globalMasked ? 2 : 5) - - strlen(flag->name)), " "); - } // End of generating left side mask display - - // At this point buf is filled up to minwidth - - /* Display flag state - * The order in which the states are to be displayed is: - * 1. [D]efaults (make.defaults, IUSE, package.mask, package.force) - * Note: Filled in later - * 2. [P]rofile package.use files - * 3. [C]onfiguration (make.conf, users package.use) - * 4. global/local - * 5. installed/not installed - */ - sprintf(buf + minwidth, " %c%c %c%c ", - flag->desc[idx].statePackage, - ' ' == flag->desc[idx].statePkgUse ? - flag->stateConf : flag->desc[idx].statePkgUse, - flag->desc[idx].isGlobal ? ' ' : 'L', - flag->desc[idx].isInstalled ? 'i' : ' '); - } // End of preparing a new description line + // Continue if any of the filters apply: + if (newDesc && !isDescLegal(flag, idx)) + continue; - // At this point buf is guaranteed to be filled up to minwidth + 8 + // If the flag name and state are drawn, following lines + // need to start with spaces + if (hasHead && !hasBlankLeft) { + memset(buf, ' ', minwidth); + hasBlankLeft = true; + } - memset(desc, 0, maxDescWidth * sizeof(char)); + // Prepare new description or blank on wrapped parts + if (newDesc) { + special = getFlagSpecialChar(flag, idx); // Wrapped and not wrapped lines are unified here // to simplify the usage of different ordering and - // stripped versus original descriptions + // stripped descriptions versus original descriptions if (flag->desc[idx].pkg) { if (e_order == eOrder_left) sprintf(desc, "(%s) %s", flag->desc[idx].pkg, e_desc == eDesc_ori @@ -314,111 +265,92 @@ static int drawflag(sFlag* flag, bool highlight) flag->desc[idx].pkg); } else sprintf(desc, "%s", flag->desc[idx].desc); + } else if (!hasBlankRight) { + memset(buf + minwidth, ' ', 10); + hasBlankRight = true; + } - /* Now display the description line according to either - * its horizontal position or the wrapPart. - * - * With wrapped lines there are a total of three possible - * situations here. - * a) The line is not wrapped. In this case pos is simply - * descriptionleft and length is number of characters that - * can be displayed. (both are already set to this) - * b) A new wrapped description starts. In this case wrapPart - * must be set, pos and length is taken from there. - * c) A wrapped description is displayed, pos and length are - * taken from there. - * As a) is already set, only b) and c) must be handled. - */ - if (eWrap_wrap == e_wrap) { - if (NULL == wrapPart) { - wrapPart = flag->desc[idx].wrap; - wrapFirst = true; - } else if (wrapFirst - && (flag->desc[idx].wrap != wrapPart) - && !wrapPart->pos) - wrapFirst = false; - pos = wrapPart->pos; - length = wrapPart->len; - // If this was switched, add the first length - if (!wrapFirst && !pos) - pos += eOrder_left == e_order - ? strlen(flag->desc[idx].pkg) - : eDesc_ori == e_desc - ? strlen(flag->desc[idx].desc) - : strlen(flag->desc[idx].desc_alt) - + 1; - wrapPart = wrapPart->next; - } + /* --- Preparations done --- */ - // aaaaand go: - sprintf(buf + minwidth + (newDesc ? 8 : 10), "%-*.*s", (int)length, (int)length, - strlen(desc) > pos - ? &desc[pos] - : ""); + // 1: Print left side info + if (!hasHead || newDesc) + // Note: If either is false, the buffer is blanked already + printFlagInfo(buf, flag, idx, !hasHead, newDesc); - /* Set correct color set according to highlighting and status*/ - if(highlight) - wattrset(wLst, COLOR_PAIR(3) | A_BOLD | A_REVERSE); - else - wattrset(wLst, COLOR_PAIR(3)); - - // Put the line on the screen - mvwaddstr(wLst, line, 0, buf); - mvwaddch(wLst, line, minwidth, ACS_VLINE); // Before state - mvwaddch(wLst, line, minwidth + 4, ACS_VLINE); // Between state and scope - mvwaddch(wLst, line, minwidth + 7, ACS_VLINE); // After scope - - // Add (default) selection if this is the header line - if (!hasHead) { - hasHead = true; - if (flag->globalForced) { - if(highlight) - wattrset(wLst, COLOR_PAIR(5) | A_REVERSE); - else - wattrset(wLst, COLOR_PAIR(5) | A_BOLD); - mvwaddch(wLst, line, 2, '+'); - } else if (flag->globalMasked) { - if(highlight) - wattrset(wLst, COLOR_PAIR(4) | A_REVERSE); - else - wattrset(wLst, COLOR_PAIR(4) | A_BOLD); - mvwaddch(wLst, line, 2, '-'); - } else if (' ' == flag->stateConf) - mvwaddch(wLst, line, 2, flag->stateDefault); - else - mvwaddch(wLst, line, 2, flag->stateConf); - } + // At this point buf is guaranteed to be filled up to minwidth + 8 + + // For normal descriptions, pos and length are already set, but + // not so for wrapped lines, these must be set for each line: + if (eWrap_wrap == e_wrap) { + setFlagWrapDraw(flag, idx, &wrapPart, &pos, &length, &wrapFirst); + wrapPart = wrapPart->next; + } - // Add [D]efault column content - if ('f' == special) { + // The right side of buf can be added now: + sprintf(buf + minwidth + (newDesc ? 8 : 10), "%-*.*s", + (int)length, (int)length, + strlen(desc) > pos ? &desc[pos] : ""); + // Note: Follow up lines of wrapped descriptions are indented by 2 + + /* Set correct color set according to highlighting and status*/ + if(highlight) + wattrset(wLst, COLOR_PAIR(3) | A_BOLD | A_REVERSE); + else + wattrset(wLst, COLOR_PAIR(3)); + + // Put the line on the screen + mvwaddstr(wLst, line, 0, buf); + mvwaddch(wLst, line, minwidth, ACS_VLINE); // Before state + mvwaddch(wLst, line, minwidth + 4, ACS_VLINE); // Between state and scope + mvwaddch(wLst, line, minwidth + 7, ACS_VLINE); // After scope + + // Add (default) selection if this is the header line + if (!hasHead) { + hasHead = true; + if (flag->globalForced) { if(highlight) wattrset(wLst, COLOR_PAIR(5) | A_REVERSE); else wattrset(wLst, COLOR_PAIR(5) | A_BOLD); - mvwaddch(wLst, line, minwidth + 1, special); - } else if ('m' == special) { + mvwaddch(wLst, line, 2, '+'); + } else if (flag->globalMasked) { if(highlight) wattrset(wLst, COLOR_PAIR(4) | A_REVERSE); else wattrset(wLst, COLOR_PAIR(4) | A_BOLD); - mvwaddch(wLst, line, minwidth + 1, special); - } else { - if (' ' == flag->desc[idx].stateDefault) - mvwaddch(wLst, line, minwidth + 1, flag->stateDefault); - else - mvwaddch(wLst, line, minwidth + 1, flag->desc[idx].stateDefault); - } + mvwaddch(wLst, line, 2, '-'); + } else if (' ' == flag->stateConf) + mvwaddch(wLst, line, 2, flag->stateDefault); + else + mvwaddch(wLst, line, 2, flag->stateConf); + } - ++line; - ++usedY; - if (NULL == wrapPart) - ++idx; - } // End of looping descriptions while there are lines left - } else { - memset(buf+minwidth, ' ', wWidth(List)-minwidth); - buf[wWidth(List)] = '\0'; - waddstr(win(List), buf); - } + // Add [D]efault column content + if ('f' == special) { + if(highlight) + wattrset(wLst, COLOR_PAIR(5) | A_REVERSE); + else + wattrset(wLst, COLOR_PAIR(5) | A_BOLD); + mvwaddch(wLst, line, minwidth + 1, special); + } else if ('m' == special) { + if(highlight) + wattrset(wLst, COLOR_PAIR(4) | A_REVERSE); + else + wattrset(wLst, COLOR_PAIR(4) | A_BOLD); + mvwaddch(wLst, line, minwidth + 1, special); + } else { + if (' ' == flag->desc[idx].stateDefault) + mvwaddch(wLst, line, minwidth + 1, flag->stateDefault); + else + mvwaddch(wLst, line, minwidth + 1, flag->desc[idx].stateDefault); + } + + // Advance counters and possibly description index + ++line; + ++usedY; + if (NULL == wrapPart) + ++idx; + } // end of looping flag descriptions if(highlight) wmove(win(List), max(flag->currline, 0), 2); @@ -737,6 +669,104 @@ static int findFlagStart(sFlag* flag, int* index, sWrap** wrap, int* line, bool* return usedLines; } +static void free_flags(void) +{ + sFlag* flag = flags->prev; + + // Clear all flags + while (flags) { + if (flag) + destroyFlag(&flags, &flag); + else + destroyFlag(&flags, &flags); + flag = flags ? flags->prev ? flags->prev : flags : NULL; + } + + // Clear line buffer + if (lineBuf) + free(lineBuf); +} + +static char getFlagSpecialChar(sFlag* flag, int index) +{ + // Return special character if needed: + if (isDescForced(flag, index)) + return 'f'; + else if (isDescMasked(flag, index)) + return 'm'; + return ' '; +} + + +static void printFlagInfo(char* buf, sFlag* flag, int index, bool printFlagName, bool printFlagState) +{ + if (printFlagName) + sprintf(buf, " %c%c%c %s%s%s%-*s ", + /* State of selection */ + flag->stateConf == ' ' ? '(' : '[', + ' ', // Filled in later + flag->stateConf == ' ' ? ')' : ']', + /* name */ + flag->globalForced ? "(" : flag->globalMasked ? "(-" : "", + flag->name, + (flag->globalForced || flag->globalMasked) ? ")" : "", + /* distance */ + (int)(minwidth + - (flag->globalForced ? 3 : flag->globalMasked ? 2 : 5) + - strlen(flag->name)), " "); + + if (printFlagState) + /* Display flag state + * The order in which the states are to be displayed is: + * 1. [D]efaults (make.defaults, IUSE, package.mask, package.force) + * Note: Filled in later + * 2. [P]rofile package.use files + * 3. [C]onfiguration (make.conf, users package.use) + * 4. global/local + * 5. installed/not installed + */ + sprintf(buf + minwidth, " %c%c %c%c ", + flag->desc[index].statePackage, + ' ' == flag->desc[index].statePkgUse ? + flag->stateConf : flag->desc[index].statePkgUse, + flag->desc[index].isGlobal ? ' ' : 'L', + flag->desc[index].isInstalled ? 'i' : ' '); +} + +static void setFlagWrapDraw(sFlag* flag, int index, sWrap** wrap, size_t* pos, size_t* len, bool* isFirstWrap) +{ + sWrap* wrapPart = *wrap; + + if (NULL == wrapPart) { + wrapPart = flag->desc[index].wrap; + *isFirstWrap = true; + } else if (*isFirstWrap + && (flag->desc[index].wrap != wrapPart) + && !wrapPart->pos) + *isFirstWrap = false; + + // Position and length can be written back already + *pos = wrapPart->pos; + *len = wrapPart->len; + + // If this was switched, add the first length + if ((false == *isFirstWrap) && (0 == *pos)) { + // Add the length of either the package list or the + // description (stripped or normal) or drawFlag will + // end up reprinting from the beginning due to the + // unified description string. + if (eOrder_left == e_order) + *pos += sizeof(flag->desc[index].pkg); + else + *pos += eDesc_ori == e_desc + ? sizeof(flag->desc[index].desc) + : sizeof(flag->desc[index].desc_alt); + } + + // Write back wrap part pointer + *wrap = wrapPart; +} + int main(void) { |