From 6e89cae675921d488f1eb5c5445ee22d3514756e Mon Sep 17 00:00:00 2001
From: Sam Lantinga <slouken@libsdl.org>
Date: Fri, 4 Oct 2024 16:58:35 -0700
Subject: [PATCH] showfont: fixed bugs introduced by splitting out the editbox

---
 examples/editbox.c  | 16 ++++++++--------
 examples/showfont.c | 17 ++++++++++++++++-
 2 files changed, 24 insertions(+), 9 deletions(-)

diff --git a/examples/editbox.c b/examples/editbox.c
index 15d3a27d..2d8ec847 100644
--- a/examples/editbox.c
+++ b/examples/editbox.c
@@ -44,7 +44,7 @@ static bool GetHighlightExtents(EditBox *edit, int *marker1, int *marker2)
     if (edit->highlight1 >= 0 && edit->highlight2 >= 0) {
         *marker1 = SDL_min(edit->highlight1, edit->highlight2);
         *marker2 = SDL_max(edit->highlight1, edit->highlight2) - 1;
-        if (*marker2 > *marker1) {
+        if (*marker2 >= *marker1) {
             return true;
         }
     }
@@ -96,14 +96,14 @@ void EditBox_Draw(EditBox *edit, SDL_Renderer *renderer)
     TTF_SubString cursor;
     if (edit->cursor_visible && TTF_GetTextSubString(edit->text, edit->cursor, &cursor)) {
         SDL_FRect cursorRect;
+
+        SDL_RectToFRect(&cursor.rect, &cursorRect);
         if (TTF_GetFontDirection(edit->font) == TTF_DIRECTION_RTL) {
-            cursorRect.x = x + cursor.rect.x + cursor.rect.w;
-        } else {
-            cursorRect.x = x + cursor.rect.x;
+            cursorRect.x += cursor.rect.w;
         }
-        cursorRect.y = y + cursor.rect.y;
+        cursorRect.x += x;
+        cursorRect.y += y;
         cursorRect.w = 1.0f;
-        cursorRect.h = (float)cursor.rect.h;
 
         SDL_SetRenderDrawColor(renderer, 0, 0, 0, 0xFF);
         SDL_RenderFillRect(renderer, &cursorRect);
@@ -357,8 +357,8 @@ static bool HandleMouseMotion(EditBox *edit, float x, float y)
 
     /* Set the highlight position */
     TTF_SubString substring;
-    int textX = (int)SDL_roundf(x - (edit->rect.x + 4.0f));
-    int textY = (int)SDL_roundf(y - (edit->rect.y + 4.0f));
+    int textX = (int)SDL_roundf(x - edit->rect.x);
+    int textY = (int)SDL_roundf(y - edit->rect.y);
     if (!TTF_GetTextSubStringForPoint(edit->text, textX, textY, &substring)) {
         SDL_Log("Couldn't get cursor location: %s\n", SDL_GetError());
         return false;
diff --git a/examples/showfont.c b/examples/showfont.c
index 20e0c837..3470b386 100644
--- a/examples/showfont.c
+++ b/examples/showfont.c
@@ -124,6 +124,7 @@ static void SetTextFocus(Scene *scene, bool focused)
 static void HandleKeyDown(Scene *scene, SDL_Event *event)
 {
     int style, outline;
+    float ptsize;
 
     switch (event->key.key) {
     case SDLK_A:
@@ -211,6 +212,19 @@ static void HandleKeyDown(Scene *scene, SDL_Event *event)
         }
         TTF_SetFontStyle(scene->font, style);
         break;
+
+    case SDLK_UP:
+        /* Increase font size */
+        ptsize = TTF_GetFontSize(scene->font);
+        TTF_SetFontSize(scene->font, ptsize + 1.0f);
+        break;
+
+    case SDLK_DOWN:
+        /* Decrease font size */
+        ptsize = TTF_GetFontSize(scene->font);
+        TTF_SetFontSize(scene->font, ptsize - 1.0f);
+        break;
+
     default:
         break;
     }
@@ -392,6 +406,7 @@ int main(int argc, char *argv[])
     TTF_SetFontKerning(font, kerning);
     TTF_SetFontHinting(font, hinting);
     TTF_SetFontWrapAlignment(font, align);
+    scene.font = font;
 
     if(dump) {
         for(i = 48; i < 123; i++) {
@@ -566,7 +581,7 @@ int main(int argc, char *argv[])
                     } else if (scene.textFocus) {
                         EditBox_HandleEvent(scene.edit, &event);
                     } else {
-                        HandleKeyDown(&scene, &event);
+                        HandleKeyDown HandleKeyDown(&scene, &event);
                     }
                     break;