Make block clickability optional

This commit is contained in:
Utkarsh Verma 2021-10-17 07:28:15 +05:30
parent f12b56e203
commit 3d55e4b10f
No known key found for this signature in database
GPG Key ID: 817656CF818EFCCC
3 changed files with 33 additions and 12 deletions

View File

@ -84,32 +84,42 @@ static Block blocks[] = {
} }
``` ```
Apart from that you can also modify the block delimiters and width of each block as shown. Apart from that you can also modify the following parameters to suit your needs.
```c ```c
// Maximum possible length of output from block, expressed in number of characters. // Maximum possible length of output from block, expressed in number of characters.
#define CMDLENGTH 50 #define CMDLENGTH 50
// The status bar's delimiter which appears in between each block.
#define DELIMITER " " #define DELIMITER " "
// Adds a trailing delimiter to the statusbar, useful for powerline // Adds a trailing delimiter to the statusbar, useful for powerline.
#define TRAILING_DELIMITER #define TRAILING_DELIMITER
// Enable clickability for blocks. Needs `dwm` to be patched appropriately.
// See the "Clickable blocks" section below.
#define CLICKABLE_BLOCKS
``` ```
### Signalling changes ### Signalling changes
Most statusbars constantly rerun every script every several seconds to update. This is an option here, but a superior choice is giving your module a signal that you can signal to it to update on a relevant event, rather than having it rerun idly. Most statusbars constantly rerun every script every several seconds to update. This is an option here, but a superior choice is giving your block a signal that you can signal to it to update on a relevant event, rather than having it rerun idly.
For example, the volume module has the update signal 5 by default. Thus, running `pkill -RTMIN+5 dwmblocks` will update it. For example, the volume block has the update signal 5 by default. Thus, running `pkill -RTMIN+5 dwmblocks` will update it.
You can also run `kill -39 $(pidof dwmblocks)` which will have the same effect, but is faster. Just add 34 to your typical signal number. You can also run `kill -39 $(pidof dwmblocks)` which will have the same effect, but is faster. Just add 34 to your typical signal number.
My volume module *never* updates on its own, instead I have this command run along side my volume shortcuts in `dwm` to only update it when relevant. My volume block *never* updates on its own, instead I have this command run along side my volume shortcuts in `dwm` to only update it when relevant.
Note that all modules must have different signal numbers. Note that all blocks must have different signal numbers.
### Clickable modules ### Clickable blocks
Like `i3blocks`, this build allows you to build in additional actions into your scripts in response to click events. You can check out [my statusbar scripts](https://github.com/UtkarshVerma/dotfiles/tree/main/.local/bin/statusbar) as references for using the `$BLOCK_BUTTON` variable. Like `i3blocks`, this build allows you to build in additional actions into your scripts in response to click events. You can check out [my statusbar scripts](https://github.com/UtkarshVerma/dotfiles/tree/main/.local/bin/statusbar) as references for using the `$BLOCK_BUTTON` variable.
For this feature to work, you need `dwm` to be patched with [statuscmd](https://dwm.suckless.org/patches/statuscmd/). To use this feature, define the `CLICKABLE_BLOCKS` feature macro in your `config.h`.
```c
#define CLICKABLE_BLOCKS
```
Apart from that, you need `dwm` to be patched with [statuscmd](https://dwm.suckless.org/patches/statuscmd/).
Because `dwmblocks-async` creates a child process, it messes up the way the original `statuscmd` patch gets the PID of statusbar. It is necessary to modify the following lines in the definition of `getstatusbarpid()`. Because `dwmblocks-async` creates a child process, it messes up the way the original `statuscmd` patch gets the PID of statusbar. It is necessary to modify the following lines in the definition of `getstatusbarpid()`.

View File

@ -1,6 +1,7 @@
#define CMDLENGTH 50 #define CMDLENGTH 50
#define DELIMITER "<" #define DELIMITER "<"
#define TRAILING_DELIMITER #define TRAILING_DELIMITER
#define CLICKABLE_BLOCKS
const Block blocks[] = { const Block blocks[] = {
BLOCK("sb-mail", 1800, 17) BLOCK("sb-mail", 1800, 17)

18
main.c
View File

@ -12,7 +12,7 @@
#define POLL_INTERVAL 50 #define POLL_INTERVAL 50
#define LEN(arr) (sizeof(arr) / sizeof(arr[0])) #define LEN(arr) (sizeof(arr) / sizeof(arr[0]))
#define BLOCK(cmd, interval, signal) {"echo \"_$(" cmd ")\"", interval, signal}, #define BLOCK(cmd, interval, signal) {"echo \"$(" cmd ")\"", interval, signal},
typedef struct { typedef struct {
const char* command; const char* command;
const unsigned int interval; const unsigned int interval;
@ -20,11 +20,19 @@ typedef struct {
} Block; } Block;
#include "config.h" #include "config.h"
#ifdef CLICKABLE_BLOCKS
#undef CLICKABLE_BLOCKS
#define CLICKABLE_BLOCKS 1
#else
#undef CLICKABLE_BLOCKS
#define CLICKABLE_BLOCKS 0
#endif
static Display* dpy; static Display* dpy;
static int screen; static int screen;
static Window root; static Window root;
static unsigned short int statusContinue = 1; static unsigned short int statusContinue = 1;
static char outputs[LEN(blocks)][CMDLENGTH + 2]; static char outputs[LEN(blocks)][CMDLENGTH + 1 + CLICKABLE_BLOCKS];
static char statusBar[2][LEN(blocks) * ((LEN(outputs[0]) - 1) + (LEN(DELIMITER) - 1)) + 1]; static char statusBar[2][LEN(blocks) * ((LEN(outputs[0]) - 1) + (LEN(DELIMITER) - 1)) + 1];
static struct epoll_event event, events[LEN(blocks) + 2]; static struct epoll_event event, events[LEN(blocks) + 2];
static int pipes[LEN(blocks)][2]; static int pipes[LEN(blocks)][2];
@ -93,17 +101,19 @@ void updateBlock(int i) {
char ch; char ch;
while (read(pipes[i][0], &ch, 1) == 1 && ch != '\n') while (read(pipes[i][0], &ch, 1) == 1 && ch != '\n')
; ;
} else if (bytesRead == 2) { } else if (bytesRead == 1) {
output[0] = '\0'; output[0] = '\0';
return; return;
} }
#if CLICKABLE_BLOCKS
if (blocks[i].signal > 0) { if (blocks[i].signal > 0) {
output[0] = blocks[i].signal; output[0] = blocks[i].signal;
output++; output++;
} }
#endif
strcpy(output, buffer + 1); strcpy(output, buffer);
} }
void debug() { void debug() {