Get typing mostly working

fide.todo

@@ -0,0 +1,43 @@
+#-*- mode: org -*-
+#+TODO: TODO | DONE
+#+STARTUP: show2levels
+
+
+* DONE Create SDL hello world
+* DONE Research which data structure to use (ext/rope.h)
+* DONE Figure out how to render text in SDL (font texture atlas)
+* DONE Insert text into rope from keyboard presses
+* DONE Render rope
+* DONE Handle colors and font texture blitting
+* DONE Get backspace working
+* TODO Scale text with C-+ and C--
+* TODO Read a file from disk and display it
+* TODO Create a cursor
+* TODO Add basic keybinding system
+* TODO Move cursor with arrow keys
+* TODO Save file
+* TODO Render each line in a different color
+To help figuring out how to color things for syntax highlighting
+* TODO Install treesitter package
+* TODO Color different parts of the buffer based on AST
+* TODO Create vertical/horizontal window splits
+* TODO Make splits resizable
+* TODO Buffer lists per pane
+* TODO Pane owned sub-panes
+* TODO Promote or demote panes as sub-panes
+* TODO Pinnable/dedicated buffers
+Panes and their sub-panes can have buffers pinned to them that require a
+keybinding to override.
+* TODO Custom buffer and pane variables 
+* TODO Floating splits
+* TODO Buffers tags/ids
+* TODO Pane attributes that modify it's behavior
+- [ ] Pinnable
+- [ ] Toggleable
+- [ ] Overtake?
+- [ ] Popup
+* TODO Narrowing/widening
+* TODO Read-only mode
+* TODO Implement key chording
+* TODO Implement modal editing modes
+* TODO Keymap layering stack

main.cpp

@@ -4,7 +4,9 @@
 #include <SDL2/SDL_render.h>
 #include <stdio.h>
 #include <iostream>
+#include <ext/rope>
 
+using namespace __gnu_cxx;
 using namespace std;
 
 //Screen dimension constants
@@ -38,8 +40,8 @@ void render_char(char key, int row, int col, SDL_Renderer* renderer, SDL_Texture
 
     dstrect.x = col;
     dstrect.y = row;
-    dstrect.w = 80;
-    dstrect.h = 80;
+    dstrect.w = 30;
+    dstrect.h = 30;
     
     SDL_Rect srcrect = get_srcrect(key);
     SDL_RenderCopy(renderer, font, &srcrect, &dstrect);
@@ -116,17 +118,35 @@ int main(int argc, char *argv[]) {
     int keyPressed = -1;
     int rowCurr = 0;
     int colCurr = 0;
-    string text = "Some text";
+    float scale = 50;
+    rope<char> buffer;
     while (quit == false) {
         while (SDL_PollEvent( &e)) {
             if (e.type == SDL_QUIT) {
                 quit = true;
-            }
-            else if (e.type == SDL_KEYDOWN) {
+            } else if (e.type == SDL_KEYDOWN) {
                 char key = e.key.keysym.sym;
-                if (key >= (char)'!' || key <= (char)'~') {
-                    keyPressed = key;
+                char mod = e.key.keysym.mod;
+                if (key == '\r') {
+                    buffer.push_back('\n');
                 }
+                if (key == '-' && mod & KMOD_LCTRL) {
+                    cout << "Minu" << endl;
+                }
+                if (key == '=' && mod & KMOD_LCTRL) {
+                    cout << "Ploos" << endl;
+                }
+                if (key >= (char)'!' || key <= (char)'~') {
+                    // keyPressed = key;
+                    buffer.push_back(key);
+                }
+                if (key == SDLK_BACKSPACE) {
+                    if (buffer.size() >= 2) {
+                        buffer.pop_back();
+                        buffer.pop_back();
+                    }
+                }
+                cout << key << endl;
                 // switch (e.key.keysym.sym) {
                 //     case SDLK_
                 // }
@@ -134,11 +154,23 @@ int main(int argc, char *argv[]) {
         }
         // SDL_FillRect( screenSurface, NULL, rgbMap);
         SDL_RenderClear(renderer);
-        SDL_SetTextureColorMod(fontTexture, 0xFF, 0, 0);
-        for (int i = 0; i < 10; i++) {
-            render_char(text[i], rowCurr, colCurr++ * 50, renderer, fontTexture);
+        SDL_SetTextureColorMod(fontTexture, 0x0, 0, 0);
+        rope<char>::iterator it;
+        for (it = buffer.mutable_begin(); it != buffer.mutable_end(); it++) {
+            if (*it == '\n') {
+                rowCurr += 1;
+                colCurr = 0;
+                continue;
+            }
+            if (*it == '\r') {
+                continue;
+            }
+            if (*it >= (char)'!' || *it <= (char)'~') {
+                render_char(*it, rowCurr * 70, colCurr++ * 50, renderer, fontTexture);
+            }
         }
         colCurr = 0;
+        rowCurr = 0;
         // Draw(keyPressed, renderer, fontTexture);
         SDL_RenderPresent(renderer);
     }