a

1 files changed, 314 insertions, 0 deletions

diff --git a/src/gui/base.h b/src/gui/base.h
new file mode 100644
index 0000000..96e0fa5
--- /dev/null
+++ b/src/gui/base.h
@@ -0,0 +1,314 @@
+#pragma once
+#include "../util/color.h"
+#include "../util/allocator.h"
+
+// ======================================= [ colorscheme ] ========================================
+
+static const struct {
+  CLR txt = CLR::WHITE();
+  CLR txt_inactive = CLR::blend( CLR::WHITE(), CLR::BLACK(), 0.3f );
+  CLR border = CLR::WHITE();
+  CLR border_inactive = CLR::blend( CLR::WHITE(), CLR::BLACK(), 0.55f );
+  CLR bg = CLR::blend( CLR::WHITE(), CLR::BLACK(), 0.92f );
+  CLR bg_sec = CLR::blend( CLR::WHITE(), CLR::BLACK(), 0.97f );
+  CLR bg_alt = CLR::blend( CLR::WHITE(), CLR::BLACK(), 0.985f );
+} ui_clr;
+
+// ========================================== [ base ] ============================================
+
+const U32 GUI_STR_BUF_MAX = 16384;
+const U32 GUI_TEXTBOX_MAX = 1024;
+const U32 GUI_NAME_LEN    = 512;
+
+/*                           impl                                */
+extern void               gui_init( struct GAME_DATA* game );
+extern void               gui_draw( struct GAME_DATA* game );
+extern void               gui_input( struct GAME_DATA* game );
+extern void               gui_onframe( struct GAME_DATA* game );
+extern void               gui_end();
+/*                                                               */
+
+extern I32                gui_relx( struct GUI_BASE* node ); //relative x pos for node
+extern I32                gui_rely( struct GUI_BASE* node ); //relative y pos for node
+
+extern struct GUI_BASE*   gui_find_node( struct GUI_BASE* root, const char* name );
+extern struct GUI_WINDOW* gui_get_parent_wnd( struct GUI_BASE* node );
+extern void               gui_empty_children( struct GUI_BASE* node );
+
+extern void               gui_free( struct GUI_BASE* node );
+
+extern struct GUI_VIEW*   gui_get_view();                             // gets currently edited view
+extern void               gui_set_view( struct GUI_VIEW* view );      // sets currently edited view
+extern struct GUI_WINDOW* gui_get_window();                           // gets currently edited window
+extern void               gui_set_window( struct GUI_WINDOW* wnd );   // sets currently edited window
+extern void               gui_bring_to_top( struct GUI_WINDOW* wnd ); // pushes window to be rendered last
+extern U8                 gui_is_fg_window( struct GUI_BASE* node );  // 1 if parent window (or window itself) is rendered last
+
+// ======================================= [ components ] =========================================
+
+struct GUI_LIST_ENTRY {
+  I32 val;
+  char title[256];
+};
+
+typedef void( *GUI_CALLBACK )( void* ptr );
+
+extern struct GUI_VIEW*       gui_view( I32 x, I32 y, I32 w, I32 h );   // sets current view
+extern struct GUI_WINDOW*     gui_window( I32 w, I32 h );               // sets current view and window
+extern struct GUI_WINDOW*     gui_window( I32 x, I32 y, I32 w, I32 h ); // sets current view and window
+extern struct GUI_TITLE*      gui_title( const char* title );
+
+extern struct GUI_LABEL*      gui_label( I32 x, I32 y, const char* title, ... );
+extern struct GUI_BUTTON*     gui_button( I32 x, I32 y, I32 w, I32 h, const char* title, GUI_CALLBACK cb );
+extern struct GUI_TEXTBOX*    gui_textbox( I32 x, I32 y, I32 w, I32 h, const char* title, U32 maxlen, U8 allow_newl = 0 );
+extern struct GUI_CHECKBOX*   gui_checkbox( I32 x, I32 y, const char* title, U8* pval );
+
+extern struct GUI_LIST*       gui_list( I32 x, I32 y, I32 w, I32 h, const char* title, LIST<GUI_LIST_ENTRY>* list, I32* pval );
+extern struct GUI_LIST_ENTRY* gui_list_get_selected( struct GUI_LIST* list );
+
+extern struct GUI_FLOATINPUT* gui_floatinput(
+  I32 x, I32 y, I32 w,
+  const char* title,
+  F32* pval,
+  F32 min,
+  F32 max,
+  F32 step = 1.f,
+  const char* printfmt = "%.2f"
+);
+
+extern struct GUI_VECTORINPUT* gui_vectorinput(
+  I32 x, I32 y, I32 w,
+  const char* title,
+  F32* pval,
+  U32 valc,
+  F32 min,
+  F32 max,
+  F32 step = 1.f,
+  const char* letters = "xyzw",
+  const char* printfmt = "%.2f"
+);
+
+extern struct GUI_COLORINPUT* gui_colorinput(
+  I32 x,
+  I32 y,
+  I32 w,
+  const char* title,
+  CLR* pval,
+  U8   showalpha = 1
+);
+
+// ======================================= [ definitions ] ========================================
+
+enum GuiTxtAlign_t {
+  ALIGN_L,
+  ALIGN_R,
+  ALIGN_C
+};
+
+enum GuiFont_t {
+  FNT_JPN12,
+  FNT_JPN16,
+  FNT_LAST
+};
+
+typedef void( *GUI_DRAW_FN )( void* el );
+typedef void( *GUI_INPUT_FN )( void* el );
+
+extern void gui_base_input_fn( void* );
+
+struct GUI_BASE {
+  I32 x{}, y{};
+  I32 w{}, h{};
+  U8  enabled{1};
+  U8  canvas{};
+
+  char name[GUI_NAME_LEN];
+
+  I32 xbound{}, ybound{};
+  I32 xoff{}, yoff{};
+
+  GUI_BASE* parent{};
+  LIST<GUI_BASE*> children{};
+
+  GUI_DRAW_FN draw_fn{};
+  GUI_INPUT_FN input_fn = gui_base_input_fn;
+};
+
+struct GUI_VIEW : GUI_BASE {
+  U8 initheld;
+};
+struct GUI_WINDOW : GUI_VIEW {
+  U8 locked{};
+  U8 ontop{};
+};
+
+struct GUI_LABEL : GUI_BASE {};
+
+struct GUI_TITLE : GUI_BASE {
+  I32 xoff, yoff;
+  U8 held{};
+};
+
+struct GUI_LIST : GUI_BASE {
+  LIST<GUI_LIST_ENTRY>* plist;
+  I32* pval;
+  U8 held;
+
+  GUI_CALLBACK cb;
+};
+
+struct GUI_BUTTON : GUI_BASE {
+  GUI_CALLBACK cb;
+  U8 held;
+  void* extra;
+};
+
+struct GUI_CHECKBOX : GUI_BASE {
+  U8 held;
+
+  U8* pval;
+  GUI_CALLBACK cb;
+};
+
+struct GUI_TEXTBOX : GUI_BASE {
+  char value[GUI_TEXTBOX_MAX];
+
+  U32 len;
+  U32 maxlen;
+
+  U8  keys[0xff];
+  U8  prevkeys[0xff];
+
+  U8  heldkey;
+  F32 heldtime;
+  F32 repeattime;
+
+  F32 blinktime;
+  U8  blink;
+
+  U8 allow_newl;
+  U8 active;
+
+  U8 m1held;
+
+  GUI_CALLBACK cb;
+};
+
+struct GUI_FLOATINPUT : GUI_BASE {
+  const char* valfmt;
+  F32* pval;
+
+  F32 min;
+  F32 max;
+  F32 step;
+
+  I32 lastmx;
+  U8  heldoutbounds;
+  U8  held;
+
+  // for color sliders
+  CLR bgcol;
+  U8  customclr;
+
+  U8  wraparound;
+  GUI_CALLBACK cb;
+};
+
+struct GUI_VECTORINPUT : GUI_VIEW {
+  const char* valfmt;
+  F32* pval;
+  U32 valc;
+
+  const char* letters;
+  F32 min;
+  F32 max;
+  F32 step;
+
+  GUI_VIEW* inputview;
+  LIST<GUI_FLOATINPUT*> inputs;
+
+  GUI_CALLBACK cb;
+};
+
+struct GUI_COLORINPUT : GUI_VECTORINPUT {};
+
+// ======================================== [ internal ] ==========================================
+
+extern void gui_push_callback( GUI_CALLBACK cb );
+extern void gui_push_callback( void* data, GUI_CALLBACK cb );
+extern void gui_run_callbacks();
+
+extern U8   gui_check_target();
+
+extern void gui_draw_line( I32 x0, I32 y0, I32 x1, I32 y1, CLR col );
+extern void gui_draw_rect( I32 x, I32 y, I32 w, I32 h, CLR col );
+extern void gui_draw_frect( I32 x, I32 y, I32 w, I32 h, CLR col );
+extern void gui_draw_circle( I32 x, I32 y, I32 r, CLR col );
+
+extern void gui_draw_str( I32 x, I32 y, U8 align, U32 fnt, CLR col, const char* fmt, ... );
+extern void gui_draw_get_str_bounds( I32* w, I32* h, U32 fnt, const char* fmt, ... );
+
+extern void gui_draw_get_clip( I32* x, I32* y, I32* w, I32* h );
+extern void gui_draw_set_clip( I32 x, I32 y, I32 w, I32 h );
+extern void gui_draw_reset_clip();
+extern void gui_draw_push_clip( I32 x, I32 y, I32 w, I32 h );
+extern void gui_draw_pop_clip();
+
+extern F32  gui_frametime();
+extern F32  gui_time();
+extern void gui_cursor_pos( I32* x, I32* y );
+extern U8   gui_key_down( U8 key );
+extern U8   gui_mbutton_down( U8 button );
+extern void gui_capture_scroll();
+
+enum __gui_internal_mouse_button {
+  GUI_MBTNLEFT,
+  GUI_MBTNRIGHT,
+  GUI_MBTNMIDDLE,
+  GUI_MBTNSCROLL
+};
+
+struct __gui_internal {
+  GUI_VIEW* cur_view;
+  GUI_WINDOW* cur_window;
+  LIST<GUI_WINDOW*> windows;
+  struct clip_rect {
+    I32 x,y,w,h;
+  };
+
+  LIST<clip_rect> clip_rects;
+  struct callback_entry {
+    GUI_CALLBACK callback;
+    void* data;
+  };
+
+  LIST<callback_entry> callbacks;
+
+  struct __font {
+    struct GL_FONT* glfnt;
+  };
+
+  struct {
+    __font jpn12;
+    __font jpn16;
+  } fonts;
+
+  // draw stuff below
+  struct GL_SHADER_PROGRAM* gl2d;
+  struct GL_SHADER_PROGRAM* gl2d_font;
+};
+
+void __gui_internal_vectorinput_init(
+  GUI_VECTORINPUT* input,
+  I32 x, I32 y, I32 w,
+  const char* title,
+  F32* pval,
+  U32 valc,
+  F32 min,
+  F32 max,
+  F32 step,
+  const char* letters,
+  const char* printfmt
+);
+
+extern __gui_internal _gui;