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app_frame, ui layout, draw the list

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This commit is contained in:
Krzosa Karol
2025-01-09 10:38:08 +01:00
parent bd5ce59791
commit 74a60e812d
9 changed files with 234 additions and 217 deletions
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96
src/app/app_win32.c
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@@ -8,7 +8,7 @@
#pragma comment(lib, "winmm.lib")
fn void app_init(void);
fn b32 app_update(app_event_list_t events);
fn b32 app_update(app_frame_t *frame);
gb b32 w32_good_scheduling;
gb WNDCLASSW w32_wc;
@@ -16,27 +16,27 @@ gb HWND w32_window_handle;
gb HDC w32_dc;
gb b32 w32_quit_app;
fn v2f64_t w32_get_window_size(HWND window) {
fn v2f32_t w32_get_window_size(HWND window) {
RECT window_rect;
GetClientRect(window, &window_rect);
f64 x = window_rect.right - window_rect.left;
f64 y = window_rect.bottom - window_rect.top;
return (v2f64_t){x, y};
f32 x = (f32)(window_rect.right - window_rect.left);
f32 y = (f32)(window_rect.bottom - window_rect.top);
return (v2f32_t){x, y};
}
fn v2f64_t w32_get_mouse_pos(HWND window) {
fn v2f32_t w32_get_mouse_pos(HWND window) {
POINT p;
GetCursorPos(&p);
ScreenToClient(window, &p);
return (v2f64_t){p.x, p.y};
return (v2f32_t){(f32)p.x, (f32)p.y};
}
fn f64 w32_get_dpr(HWND window_handle) {
fn f32 w32_get_dpr(HWND window_handle) {
UINT dpi = GetDpiForWindow(window_handle);
if (dpi == 0) {
return 1.0;
}
f64 result = (f64)dpi / 96.0;
f32 result = (f32)dpi / 96.0f;
return result;
}
@@ -57,22 +57,19 @@ fn f64 w32_seconds_now(void) {
///////////////////////////////
// event processing
gb app_event_list_t w32_event_list;
gb app_frame_t *w32_frame;
gb ma_arena_t *w32_event_arena;
fn void w32_push_event(app_event_t event) {
fn void w32_push_event(app_frame_t *frame, app_event_t event) {
app_event_t *ev = ma_push_type(w32_event_arena, app_event_t);
*ev = event;
if (GetKeyState(VK_CONTROL) & 0x8000) ev->ctrl = true;
if (GetKeyState(VK_SHIFT) & 0x8000) ev->shift = true;
if (GetKeyState(VK_MENU) & 0x8000) ev->alt = true;
ev->window_size = w32_get_window_size(w32_window_handle);
ev->mouse_pos = w32_get_mouse_pos(w32_window_handle);
ev->dpr = w32_get_dpr(w32_window_handle);
SLLQ_APPEND(w32_event_list.first, w32_event_list.last, ev);
w32_event_list.len += 1;
SLLQ_APPEND(frame->first_event, frame->last_event, ev);
frame->event_count += 1;
}
fn void w32_push_wm_char_event(WPARAM wparam) {
@@ -88,7 +85,7 @@ fn void w32_push_wm_char_event(WPARAM wparam) {
}
}
w32_push_event((app_event_t){
w32_push_event(w32_frame, (app_event_t){
.kind = app_event_kind_text,
.text = string,
});
@@ -101,13 +98,13 @@ fn LRESULT CALLBACK w32_window_proc(HWND wnd, UINT msg, WPARAM wparam, LPARAM lp
} break;
case WM_KEYDOWN: {
w32_push_event((app_event_t){
w32_push_event(w32_frame, (app_event_t){
.kind = app_event_kind_key_down,
.key = w32_map_wparam_to_app_key(wparam)
});
} break;
case WM_KEYUP: {
w32_push_event((app_event_t){
w32_push_event(w32_frame, (app_event_t){
.kind = app_event_kind_key_up,
.key = w32_map_wparam_to_app_key(wparam)
});
@@ -116,14 +113,14 @@ fn LRESULT CALLBACK w32_window_proc(HWND wnd, UINT msg, WPARAM wparam, LPARAM lp
case WM_LBUTTONDOWN: {
SetCapture(wnd);
w32_push_event((app_event_t){
w32_push_event(w32_frame, (app_event_t){
.kind = app_event_kind_mouse_down,
.mouse_button = app_mouse_button_left,
});
} break;
case WM_LBUTTONUP: {
ReleaseCapture();
w32_push_event((app_event_t){
w32_push_event(w32_frame, (app_event_t){
.kind = app_event_kind_mouse_up,
.mouse_button = app_mouse_button_left,
});
@@ -131,13 +128,13 @@ fn LRESULT CALLBACK w32_window_proc(HWND wnd, UINT msg, WPARAM wparam, LPARAM lp
case WM_RBUTTONDOWN: {
w32_push_event((app_event_t){
w32_push_event(w32_frame, (app_event_t){
.kind = app_event_kind_mouse_down,
.mouse_button = app_mouse_button_right,
});
} break;
case WM_RBUTTONUP: {
w32_push_event((app_event_t){
w32_push_event(w32_frame, (app_event_t){
.kind = app_event_kind_mouse_up,
.mouse_button = app_mouse_button_right,
});
@@ -146,14 +143,14 @@ fn LRESULT CALLBACK w32_window_proc(HWND wnd, UINT msg, WPARAM wparam, LPARAM lp
case WM_MBUTTONDOWN: {
SetCapture(wnd);
w32_push_event((app_event_t){
w32_push_event(w32_frame, (app_event_t){
.kind = app_event_kind_mouse_down,
.mouse_button = app_mouse_button_middle,
});
} break;
case WM_MBUTTONUP: {
ReleaseCapture();
w32_push_event((app_event_t){
w32_push_event(w32_frame, (app_event_t){
.kind = app_event_kind_mouse_up,
.mouse_button = app_mouse_button_middle,
});
@@ -161,9 +158,9 @@ fn LRESULT CALLBACK w32_window_proc(HWND wnd, UINT msg, WPARAM wparam, LPARAM lp
case WM_MOUSEWHEEL: {
int zDelta = GET_WHEEL_DELTA_WPARAM(wparam);
w32_push_event((app_event_t){
w32_push_event(w32_frame, (app_event_t){
.kind = app_event_kind_mouse_wheel,
.mouse_wheel_delta = (v3f64_t){0, zDelta},
.mouse_wheel_delta = (v3f32_t){0, (f32)zDelta},
});
} break;
@@ -179,15 +176,15 @@ fn LRESULT CALLBACK w32_window_proc(HWND wnd, UINT msg, WPARAM wparam, LPARAM lp
return 0;
}
app_event_list_t w32_get_events(ma_arena_t *arena, b32 wait, b32 *waited) {
b32 w32_get_events(ma_arena_t *arena, app_frame_t *frame, b32 wait) {
w32_event_arena = arena;
zero_struct(&w32_event_list);
*waited = false;
w32_frame = frame;
b32 waited = false;
MSG msg;
if (wait) {
if (PeekMessageW(&msg, NULL, 0, 0, PM_NOREMOVE) == 0) {
*waited = true;
waited = true;
}
GetMessageW(&msg, NULL, 0, 0);
@@ -200,7 +197,7 @@ app_event_list_t w32_get_events(ma_arena_t *arena, b32 wait, b32 *waited) {
DispatchMessageW(&msg);
}
return w32_event_list;
return waited;
}
///////////////////////////////
@@ -212,11 +209,11 @@ struct w32_canvas_t {
HWND window_handle;
HBITMAP dib;
HDC dib_dc;
v2f64_t window_size;
v2f32_t window_size;
};
w32_canvas_t w32_create_canvas(HWND window_handle) {
v2f64_t window_size = w32_get_window_size(window_handle);
v2f32_t window_size = w32_get_window_size(window_handle);
w32_canvas_t result = {.window_handle = window_handle, .window_size = window_size};
HDC window_dc = GetDC(window_handle);
BITMAPINFO bminfo = {0};
@@ -252,7 +249,7 @@ void w32_present_canvas(w32_canvas_t *canvas) {
}
void w32_try_resizing_canvas(w32_canvas_t *canvas, HWND window_handle) {
v2f64_t window_size = w32_get_window_size(window_handle);
v2f32_t window_size = w32_get_window_size(window_handle);
if (canvas->window_size.x != window_size.x || canvas->window_size.y != window_size.y) {
w32_destroy_canvas(canvas);
*canvas = w32_create_canvas(window_handle);
@@ -354,32 +351,36 @@ int WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int n
f64 time_frame_start = w32_seconds_now();
f64 time_delta = 1.0 / refresh_rate;
f64 time_total = 0.0;
f64 time_update = 0.0;
b32 wait_for_events = false;
u64 consecutive_missed_frames = 0;
u64 missed_frames = 0;
u64 frame = 0;
u64 frame_counter = 0;
for (;;) {
b32 waited_for_events = false;
app_event_list_t event_list = w32_get_events(tcx.temp, wait_for_events, &waited_for_events);
if (waited_for_events) {
// delta_time = 0.0001
app_frame_t frame = {0};
frame.window_size = w32_get_window_size(w32_window_handle);
frame.dpr = w32_get_dpr(w32_window_handle);
frame.mouse_pos = w32_get_mouse_pos(w32_window_handle);
frame.delta = time_delta;
frame.update = time_update;
b32 waited = w32_get_events(tcx.temp, &frame, wait_for_events);
if (waited) {
frame.delta = 0.00001;
}
for (app_event_t *ev = event_list.first; ev; ev = ev->next) {
for (app_event_t *ev = frame.first_event; ev; ev = ev->next) {
if (ev->kind == app_event_kind_key_down && ev->key == app_key_escape) {
ExitProcess(0);
}
}
if (event_list.len == 0) {
w32_push_event((app_event_t){.kind = app_event_kind_update});
event_list = w32_event_list;
if (frame.event_count == 0) {
w32_push_event(&frame, (app_event_t){.kind = app_event_kind_update});
}
b32 animating = app_update(event_list);
b32 animating = app_update(&frame);
wait_for_events = !animating;
SwapBuffers(w32_dc);
@@ -417,13 +418,12 @@ int WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int n
consecutive_missed_frames += 1;
}
frame += 1;
frame_counter += 1;
// @todo:
// should this be time_delta or time_update ????
// probably want the locked frame rate and total should reflect that, so choosing
// time_delta seems the correct choice but not really sure what is correct.
time_total += time_delta;
time_frame_start = w32_seconds_now();
}