diff options
Diffstat (limited to 'src/terminal-window.c')
| -rw-r--r-- | src/terminal-window.c | 196 |
1 files changed, 190 insertions, 6 deletions
diff --git a/src/terminal-window.c b/src/terminal-window.c index 04fbca8..d0c159b 100644 --- a/src/terminal-window.c +++ b/src/terminal-window.c @@ -321,6 +321,176 @@ app_setting_notify_destroy_cb (GdkScreen *screen) /* utility functions */ +/* + Derived from XParseGeometry() in X.org + + Copyright 1985, 1986, 1987, 1998 The Open Group + + All Rights Reserved. + + The above copyright notice and this permission notice shall be included + in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. + IN NO EVENT SHALL THE OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR + OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, + ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR + OTHER DEALINGS IN THE SOFTWARE. + + Except as contained in this notice, the name of The Open Group shall + not be used in advertising or otherwise to promote the sale, use or + other dealings in this Software without prior written authorization + from The Open Group. +*/ + +/* + * XParseGeometry parses strings of the form + * "=<width>x<height>{+-}<xoffset>{+-}<yoffset>", where + * width, height, xoffset, and yoffset are unsigned integers. + * Example: "=80x24+300-49" + * The equal sign is optional. + * It returns a bitmask that indicates which of the four values + * were actually found in the string. For each value found, + * the corresponding argument is updated; for each value + * not found, the corresponding argument is left unchanged. + */ + +/* The following code is from Xlib, and is minimally modified, so we + * can track any upstream changes if required. Don’t change this + * code. Or if you do, put in a huge comment marking which thing + * changed. + */ + +static int +terminal_window_ReadInteger (char *string, + char **NextString) +{ + register int Result = 0; + int Sign = 1; + + if (*string == '+') + string++; + else if (*string == '-') + { + string++; + Sign = -1; + } + for (; (*string >= '0') && (*string <= '9'); string++) + { + Result = (Result * 10) + (*string - '0'); + } + *NextString = string; + if (Sign >= 0) + return (Result); + else + return (-Result); +} + +/* + * Bitmask returned by XParseGeometry(). Each bit tells if the corresponding + * value (x, y, width, height) was found in the parsed string. + */ +#define NoValue 0x0000 +#define XValue 0x0001 +#define YValue 0x0002 +#define WidthValue 0x0004 +#define HeightValue 0x0008 +#define AllValues 0x000F +#define XNegative 0x0010 +#define YNegative 0x0020 + +static int +terminal_window_XParseGeometry (const char *string, + int *x, int *y, + unsigned int *width, + unsigned int *height) +{ + int mask = NoValue; + register char *strind; + unsigned int tempWidth = 0, tempHeight = 0; + int tempX = 0, tempY = 0; + char *nextCharacter; + + if ( (string == NULL) || (*string == '\0')) return(mask); + if (*string == '=') + string++; /* ignore possible '=' at beg of geometry spec */ + + strind = (char *)string; + if (*strind != '+' && *strind != '-' && *strind != 'x') { + tempWidth = terminal_window_ReadInteger(strind, &nextCharacter); + if (strind == nextCharacter) + return (0); + strind = nextCharacter; + mask |= WidthValue; + } + + if (*strind == 'x' || *strind == 'X') { + strind++; + tempHeight = terminal_window_ReadInteger(strind, &nextCharacter); + if (strind == nextCharacter) + return (0); + strind = nextCharacter; + mask |= HeightValue; + } + + if ((*strind == '+') || (*strind == '-')) { + if (*strind == '-') { + strind++; + tempX = -terminal_window_ReadInteger(strind, &nextCharacter); + if (strind == nextCharacter) + return (0); + strind = nextCharacter; + mask |= XNegative; + + } + else + { strind++; + tempX = terminal_window_ReadInteger(strind, &nextCharacter); + if (strind == nextCharacter) + return(0); + strind = nextCharacter; + } + mask |= XValue; + if ((*strind == '+') || (*strind == '-')) { + if (*strind == '-') { + strind++; + tempY = -terminal_window_ReadInteger(strind, &nextCharacter); + if (strind == nextCharacter) + return(0); + strind = nextCharacter; + mask |= YNegative; + + } + else + { + strind++; + tempY = terminal_window_ReadInteger(strind, &nextCharacter); + if (strind == nextCharacter) + return(0); + strind = nextCharacter; + } + mask |= YValue; + } + } + + /* If strind isn't at the end of the string the it's an invalid + geometry specification. */ + + if (*strind != '\0') return (0); + + if (x != NULL && mask & XValue) + *x = tempX; + if (y != NULL && mask & YValue) + *y = tempY; + if (width != NULL && mask & WidthValue) + *width = tempWidth; + if (height != NULL && mask & HeightValue) + *height = tempHeight; + return (mask); +} + static char * escape_underscores (const char *name) { @@ -2566,19 +2736,21 @@ terminal_window_set_size (TerminalWindow *window, TerminalScreen *screen, gboolean even_if_mapped) { - terminal_window_set_size_force_grid (window, screen, even_if_mapped, -1, -1); + terminal_window_set_size_force_grid (window, screen, even_if_mapped, NULL); } -void +gboolean terminal_window_set_size_force_grid (TerminalWindow *window, TerminalScreen *screen, gboolean even_if_mapped, - int force_grid_width, - int force_grid_height) + gchar *force_grid_string) { TerminalWindowPrivate *priv = window->priv; GtkWidget *widget; GtkWidget *app; + gboolean result; + int parse_result; + unsigned int force_grid_width, force_grid_height; int grid_width, grid_height; gint pixel_width, pixel_height; GdkWindow *gdk_window; @@ -2609,9 +2781,21 @@ terminal_window_set_size_force_grid (TerminalWindow *window, terminal_screen_get_size (screen, &grid_width, &grid_height); - if (force_grid_width >= 0) + if (force_grid_string != NULL) + { + parse_result = terminal_window_XParseGeometry (force_grid_string, + NULL, NULL, + &force_grid_width, + &force_grid_height); + if (parse_result == NoValue) + result = FALSE; + } + else + parse_result = NoValue; + + if (parse_result & WidthValue) grid_width = force_grid_width; - if (force_grid_height >= 0) + if (parse_result & HeightValue) grid_height = force_grid_height; /* the "old" struct members were updated by update_geometry */ |