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feat: add common dialogs, i.e. open/save dialog

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This commit is contained in:
Daniel Hammer
2026-04-01 23:45:28 +02:00
parent b140825121
commit 19090d3ea5
15 changed files with 2164 additions and 79 deletions
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programs/src/texteditor/main.cpp
+107 -19
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@@ -12,6 +12,7 @@
#include <gui/gui.hpp>
#include <gui/truetype.hpp>
#include <gui/svg.hpp>
#include <gui/dialogs.hpp>
#include <gui/stb_math.h>
extern "C" {
@@ -87,6 +88,7 @@ int g_scroll_y = 0; // first visible line
int g_scroll_x = 0; // horizontal scroll in pixels
bool g_modified = false;
bool g_cursor_moved = true;
char g_status_msg[128] = {};
// File
char g_filepath[256] = {};
@@ -434,24 +436,76 @@ static void ensure_cursor_visible(int visible_lines, int text_area_w) {
// File I/O
// ============================================================================
static void load_file(const char* path) {
static void set_status(const char* msg) {
if (!msg) msg = "";
montauk::strncpy(g_status_msg, msg, sizeof(g_status_msg) - 1);
g_status_msg[sizeof(g_status_msg) - 1] = '\0';
}
static bool looks_binary(const char* data, int len) {
if (!data || len <= 0) return false;
int control_count = 0;
for (int i = 0; i < len; i++) {
unsigned char ch = (unsigned char)data[i];
if (ch == 0) return true;
if (ch < 32 && ch != '\n' && ch != '\r' && ch != '\t' && ch != '\f')
control_count++;
}
return control_count * 20 > len;
}
static bool load_file(const char* path) {
int fd = montauk::open(path);
if (fd < 0) return;
if (fd < 0) {
set_status("Failed to open file");
return false;
}
uint64_t size = montauk::getsize(fd);
if (size > (uint64_t)MAX_CAP) size = MAX_CAP;
if (size > (uint64_t)MAX_CAP) {
montauk::close(fd);
set_status("File is too large for Text Editor");
return false;
}
if ((int)size >= g_buf_cap) {
int new_cap = (int)size + 1024;
int read_len = (int)size;
int temp_cap = read_len + 1;
if (temp_cap < 1024) temp_cap = 1024;
char* temp = (char*)montauk::malloc(temp_cap);
if (!temp) {
montauk::close(fd);
set_status("Out of memory while opening file");
return false;
}
int got = montauk::read(fd, (uint8_t*)temp, 0, size);
montauk::close(fd);
if (got < 0) {
montauk::mfree(temp);
set_status("Failed to read file");
return false;
}
temp[got] = '\0';
if (looks_binary(temp, got)) {
montauk::mfree(temp);
set_status("Binary files cannot be opened in Text Editor");
return false;
}
if (got >= g_buf_cap) {
int new_cap = got + 1024;
if (new_cap > MAX_CAP) new_cap = MAX_CAP;
g_buffer = (char*)montauk::realloc(g_buffer, new_cap);
g_buf_cap = new_cap;
}
montauk::read(fd, (uint8_t*)g_buffer, 0, size);
montauk::close(fd);
montauk::memcpy(g_buffer, temp, (uint64_t)(got + 1));
montauk::mfree(temp);
g_buf_len = (int)size;
g_buf_len = got;
g_cursor_pos = 0;
g_scroll_y = 0;
g_scroll_x = 0;
@@ -468,21 +522,28 @@ static void load_file(const char* path) {
montauk::strncpy(g_filename, path, 63);
g_syntax_language = syn_detect_language(g_filepath);
clear_selection();
set_status("");
recompute_lines();
update_cursor_pos();
return true;
}
static void save_file() {
if (g_filepath[0] == '\0') return;
int fd = montauk::fcreate(g_filepath);
if (fd < 0) return;
if (fd < 0) {
set_status("Failed to save file");
return;
}
montauk::fwrite(fd, (const uint8_t*)g_buffer, 0, g_buf_len);
montauk::close(fd);
g_modified = false;
set_status("");
}
// ============================================================================
@@ -734,10 +795,16 @@ static void render(uint32_t* pixels) {
// Left: filename
char status_left[128];
if (g_filename[0])
if (g_status_msg[0]) {
if (g_filename[0])
snprintf(status_left, 128, " %s%s | %s", g_filename, g_modified ? " [modified]" : "", g_status_msg);
else
snprintf(status_left, 128, " Untitled%s | %s", g_modified ? " [modified]" : "", g_status_msg);
} else if (g_filename[0]) {
snprintf(status_left, 128, " %s%s", g_filename, g_modified ? " [modified]" : "");
else
} else {
snprintf(status_left, 128, " Untitled%s", g_modified ? " [modified]" : "");
}
if (g_font)
g_font->draw_to_buffer(pixels, W, H, 4, sty, status_left, STATUS_TEXT, FONT_SIZE);
@@ -778,20 +845,41 @@ static void pathbar_confirm(int win_id) {
g_pathbar_open = false;
}
static void open_pathbar_open() {
static void open_inline_pathbar(bool save_mode, const char* initial_text) {
g_pathbar_open = true;
g_pathbar_save = false;
montauk::strncpy(g_pathbar_text, g_filepath, 255);
g_pathbar_save = save_mode;
if (!initial_text) initial_text = "";
montauk::strncpy(g_pathbar_text, initial_text, 255);
g_pathbar_len = montauk::slen(g_pathbar_text);
g_pathbar_cursor = g_pathbar_len;
}
static void open_pathbar_open() {
char path[256] = {};
char msg[128] = {};
if (dialogs::open_file("Open File", g_filepath, path, sizeof(path), msg, sizeof(msg))) {
load_file(path);
} else if (msg[0]) {
open_inline_pathbar(false, g_filepath);
}
}
static void open_pathbar_save() {
g_pathbar_open = true;
g_pathbar_save = true;
g_pathbar_text[0] = '\0';
g_pathbar_len = 0;
g_pathbar_cursor = 0;
char path[256] = {};
const char* initial_path = g_filepath[0] ? g_filepath : "";
const char* suggested_name = g_filename[0] ? g_filename : "untitled.txt";
char msg[128] = {};
if (dialogs::save_file("Save File", initial_path, suggested_name, path, sizeof(path), msg, sizeof(msg))) {
montauk::strncpy(g_filepath, path, 255);
const char* name = path;
for (int i = 0; path[i]; i++)
if (path[i] == '/') name = path + i + 1;
montauk::strncpy(g_filename, name, 63);
g_syntax_language = syn_detect_language(g_filepath);
save_file();
} else if (msg[0]) {
open_inline_pathbar(true, initial_path[0] ? initial_path : suggested_name);
}
}
// ============================================================================