Add a toggleable help view for keybindings

Author Mitja Felicijan <mitja.felicijan@gmail.com> 2026-01-17 02:30:36 +0100
Committer Mitja Felicijan <mitja.felicijan@gmail.com> 2026-01-17 02:30:36 +0100
Commit 7e51fbebe479f772c3b0be5c78a787ae23ba8cc1 (patch)
-rw-r--r-- tdbg.cpp 56
1 files changed, 53 insertions, 3 deletions
diff --git a/tdbg.cpp b/tdbg.cpp
...
33 
	INPUT_MODE_NORMAL,
 33 
	INPUT_MODE_NORMAL,
34 
	INPUT_MODE_BREAKPOINT,
 34 
	INPUT_MODE_BREAKPOINT,
35 
	INPUT_MODE_VARIABLE,
 35 
	INPUT_MODE_VARIABLE,
36 
	INPUT_MODE_WATCH
 36 
	INPUT_MODE_WATCH,
 
  
 37 
	INPUT_MODE_HELP
37 
};
 38 
};
38 
  
 39 
  
39 
struct LLDBGuard {
 40 
struct LLDBGuard {
...
647 
	}
 648 
	}
648 
}
 649 
}
649 
  
 650 
  
 
  
 651 
void draw_help_view(int width, int height) {
 
  
 652 
	int w = 60;
 
  
 653 
	int h = 18;
 
  
 654 
	int x = (width - w) / 2;
 
  
 655 
	int y = (height - h) / 2;
 
  
 656 
  
 
  
 657 
	// Fill background
 
  
 658 
	for (int i = 0; i < h; ++i) {
 
  
 659 
		for (int j = 0; j < w; ++j) {
 
  
 660 
			tb_set_cell(x + j, y + i, ' ', TB_DEFAULT, TB_DEFAULT);
 
  
 661 
		}
 
  
 662 
	}
 
  
 663 
  
 
  
 664 
	draw_box(x, y, w, h, "Help / Keybinds");
 
  
 665 
  
 
  
 666 
	int ty = y + 2;
 
  
 667 
	int tx = x + 3;
 
  
 668 
	
  
 669 
	auto d = [&](const std::string& key, const std::string& desc) {
 
  
 670 
		draw_text(tx, ty, TB_YELLOW | TB_BOLD, TB_DEFAULT, key);
 
  
 671 
		draw_text(tx + 13, ty, TB_DEFAULT, TB_DEFAULT, desc);
 
  
 672 
		ty++;
 
  
 673 
	};
 
  
 674 
  
 
  
 675 
	d("r", "Run / Launch program");
 
  
 676 
	d("b", "Add breakpoint (file:line or func)");
 
  
 677 
	d("p", "Print variable / Evaluate expr");
 
  
 678 
	d("w", "Add watch expression");
 
  
 679 
	d("n", "Step Over (next line)");
 
  
 680 
	d("s", "Step Into (into function)");
 
  
 681 
	d("o", "Step Out (to caller)");
 
  
 682 
	d("c", "Continue execution");
 
  
 683 
	d("h", "Toggle help window");
 
  
 684 
	d("q", "Quit debugger");
 
  
 685 
	d("Esc", "Cancel input / Close help");
 
  
 686 
	d("Ctrl+Arrows", "Resize layout");
 
  
 687 
	d("Mouse Wheel", "Scroll active window");
 
  
 688 
  
 
  
 689 
	draw_text(x + (w - 24) / 2, y + h - 2, TB_BLACK, TB_WHITE, " Press any key to close ");
 
  
 690 
}
 
  
 691 
  
650 
void draw_status_bar(SBProcess &process, InputMode mode, int width, int height) {
 692 
void draw_status_bar(SBProcess &process, InputMode mode, int width, int height) {
651 
	std::string state_str = "Status: ";
 693 
	std::string state_str = "Status: ";
652 
	if (!process.IsValid()) {
 694 
	if (!process.IsValid()) {
...
660 
	}
 702 
	}
661 
  
 703 
  
662 
	state_str += (mode == INPUT_MODE_NORMAL)
 704 
	state_str += (mode == INPUT_MODE_NORMAL)
663 
		? " | r=Run, b=Add breakpoint, p=Print, w=Watch, n=Step Over, s=Step Into, o=Step Out, c=Continue, Ctrl+Arrows=Resize, q=Quit"
 705 
		? " | r=Run, b=Add bp, p=Print, w=Watch, n=Step, s=Step In, o=Step Out, c=Cont, h=Help, q=Quit"
664 
		: " | Enter=Confirm, Esc=Cancel";
 706 
		: (mode == INPUT_MODE_HELP ? " | Press any key to close help" : " | Enter=Confirm, Esc=Cancel");
665 
  
 707 
  
666 
	for (int x = 0; x < width; ++x) {
 708 
	for (int x = 0; x < width; ++x) {
667 
		tb_set_cell(x, height - 1, ' ', TB_BLACK, TB_WHITE);
 709 
		tb_set_cell(x, height - 1, ' ', TB_BLACK, TB_WHITE);
...
793 
		draw_breakpoints_view(target, split_x, main_window_height, layout_config.sidebar_width, layout_config.log_height);
 835 
		draw_breakpoints_view(target, split_x, main_window_height, layout_config.sidebar_width, layout_config.log_height);
794 
		draw_status_bar(process, mode, width, height);
 836 
		draw_status_bar(process, mode, width, height);
795 
  
 837 
  
 
  
 838 
		if (mode == INPUT_MODE_HELP) {
 
  
 839 
			draw_help_view(width, height);
 
  
 840 
		}
 
  
 841 
  
796 
		tb_present();
 842 
		tb_present();
797 
  
 843 
  
798 
		struct tb_event ev;
 844 
		struct tb_event ev;
...
859 
					} else if (ev.ch == 'w') {
 905 
					} else if (ev.ch == 'w') {
860 
						mode = INPUT_MODE_WATCH;
 906 
						mode = INPUT_MODE_WATCH;
861 
						input_buffer.clear();
 907 
						input_buffer.clear();
 
  
 908 
					} else if (ev.ch == 'h') {
 
  
 909 
						mode = INPUT_MODE_HELP;
862 
					} else {
 910 
					} else {
863 
						if (process.IsValid() && process.GetState() == eStateStopped) {
 911 
						if (process.IsValid() && process.GetState() == eStateStopped) {
864 
							switch (ev.ch) {
 912 
							switch (ev.ch) {
...
920 
					} else if (ev.ch != 0) {
 968 
					} else if (ev.ch != 0) {
921 
						input_buffer += (char)ev.ch;
 969 
						input_buffer += (char)ev.ch;
922 
					}
 970 
					}
 
  
 971 
				} else if (mode == INPUT_MODE_HELP) {
 
  
 972 
					mode = INPUT_MODE_NORMAL;
923 
				}
 973 
				}
924 
			} else if (ev.type == TB_EVENT_MOUSE) {
 974 
			} else if (ev.type == TB_EVENT_MOUSE) {
925 
				int main_window_height = tb_height() - layout_config.log_height - layout_config.status_height;
 975 
				int main_window_height = tb_height() - layout_config.log_height - layout_config.status_height;
...