testime: added support for multiple windows

This commit is contained in:
Sam Lantinga 2024-08-02 08:39:13 -07:00
parent bffd35995c
commit 5d51e3b4ab
1 changed files with 189 additions and 131 deletions

View File

@ -42,21 +42,32 @@
#define CURSOR_BLINK_INTERVAL_MS 500
typedef struct
{
SDL_Window *window;
SDL_Renderer *renderer;
int rendererID;
SDL_FRect textRect;
SDL_FRect markedRect;
char text[MAX_TEXT_LENGTH];
char markedText[MAX_TEXT_LENGTH];
int cursor;
int cursor_length;
SDL_bool cursor_visible;
Uint64 last_cursor_change;
char **candidates;
int num_candidates;
int selected_candidate;
SDL_bool horizontal_candidates;
} WindowState;
static SDLTest_CommonState *state;
static SDL_FRect textRect, markedRect;
static SDL_Color lineColor = { 0, 0, 0, 255 };
static SDL_Color backColor = { 255, 255, 255, 255 };
static SDL_Color textColor = { 0, 0, 0, 255 };
static char text[MAX_TEXT_LENGTH], markedText[MAX_TEXT_LENGTH];
static int cursor = 0;
static int cursor_length = 0;
static SDL_bool cursor_visible;
static Uint64 last_cursor_change;
static WindowState *windowstate;
static const SDL_Color lineColor = { 0, 0, 0, 255 };
static const SDL_Color backColor = { 255, 255, 255, 255 };
static const SDL_Color textColor = { 0, 0, 0, 255 };
static SDL_BlendMode highlight_mode;
static char **candidates;
static int num_candidates;
static int selected_candidate;
static SDL_bool horizontal_candidates;
#ifdef HAVE_SDL_TTF
static TTF_Font *font;
#else
@ -455,81 +466,88 @@ static Uint32 utf8_decode(const char *p, size_t len)
return codepoint;
}
static void InitInput(void)
static WindowState *GetWindowStateForWindowID(SDL_WindowID windowID)
{
int i;
/* Prepare a rect for text input */
textRect.x = textRect.y = 100.0f;
textRect.w = DEFAULT_WINDOW_WIDTH - 2 * textRect.x;
textRect.h = 50.0f;
text[0] = 0;
markedRect = textRect;
markedText[0] = 0;
SDL_Window *window = SDL_GetWindowFromID(windowID);
for (i = 0; i < state->num_windows; ++i) {
SDL_StartTextInput(state->windows[i]);
if (windowstate[i].window == window) {
return &windowstate[i];
}
}
return NULL;
}
static void InitInput(WindowState *ctx)
{
/* Prepare a rect for text input */
ctx->textRect.x = ctx->textRect.y = 100.0f;
ctx->textRect.w = DEFAULT_WINDOW_WIDTH - 2 * ctx->textRect.x;
ctx->textRect.h = 50.0f;
ctx->markedRect = ctx->textRect;
SDL_StartTextInput(ctx->window);
}
static void ClearCandidates(void)
static void ClearCandidates(WindowState *ctx)
{
int i;
for (i = 0; i < num_candidates; ++i) {
SDL_free(candidates[i]);
for (i = 0; i < ctx->num_candidates; ++i) {
SDL_free(ctx->candidates[i]);
}
SDL_free(candidates);
candidates = NULL;
num_candidates = 0;
SDL_free(ctx->candidates);
ctx->candidates = NULL;
ctx->num_candidates = 0;
}
static void SaveCandidates(SDL_Event *event)
static void SaveCandidates(WindowState *ctx, SDL_Event *event)
{
int i;
ClearCandidates();
ClearCandidates(ctx);
num_candidates = event->edit_candidates.num_candidates;
if (num_candidates > 0) {
candidates = (char **)SDL_malloc(num_candidates * sizeof(*candidates));
if (!candidates) {
num_candidates = 0;
ctx->num_candidates = event->edit_candidates.num_candidates;
if (ctx->num_candidates > 0) {
ctx->candidates = (char **)SDL_malloc(ctx->num_candidates * sizeof(*ctx->candidates));
if (!ctx->candidates) {
ctx->num_candidates = 0;
return;
}
for (i = 0; i < num_candidates; ++i) {
candidates[i] = SDL_strdup(event->edit_candidates.candidates[i]);
for (i = 0; i < ctx->num_candidates; ++i) {
ctx->candidates[i] = SDL_strdup(event->edit_candidates.candidates[i]);
}
selected_candidate = event->edit_candidates.selected_candidate;
horizontal_candidates = event->edit_candidates.horizontal;
ctx->selected_candidate = event->edit_candidates.selected_candidate;
ctx->horizontal_candidates = event->edit_candidates.horizontal;
}
}
static void DrawCandidates(int rendererID, SDL_FRect *cursorRect)
static void DrawCandidates(WindowState *ctx, SDL_FRect *cursorRect)
{
SDL_Renderer *renderer = state->renderers[rendererID];
SDL_Renderer *renderer = ctx->renderer;
int rendererID = ctx->rendererID;
int i;
int output_w = 0, output_h = 0;
float w = 0.0f, h = 0.0f;
SDL_FRect candidatesRect, dstRect, underlineRect;
if (num_candidates == 0) {
if (ctx->num_candidates == 0) {
return;
}
/* Calculate the size of the candidate list */
for (i = 0; i < num_candidates; ++i) {
if (!candidates[i]) {
for (i = 0; i < ctx->num_candidates; ++i) {
if (!ctx->candidates[i]) {
continue;
}
#ifdef HAVE_SDL_TTF
/* FIXME */
#else
if (horizontal_candidates) {
const char *utext = candidates[i];
if (ctx->horizontal_candidates) {
const char *utext = ctx->candidates[i];
Uint32 codepoint;
size_t len;
float advance = 0.0f;
@ -544,7 +562,7 @@ static void DrawCandidates(int rendererID, SDL_FRect *cursorRect)
w += advance;
h = UNIFONT_GLYPH_SIZE * UNIFONT_DRAW_SCALE;
} else {
const char *utext = candidates[i];
const char *utext = ctx->candidates[i];
Uint32 codepoint;
size_t len;
float advance = 0.0f;
@ -584,8 +602,8 @@ static void DrawCandidates(int rendererID, SDL_FRect *cursorRect)
/* Draw the candidates */
dstRect.x = candidatesRect.x + 3.0f;
dstRect.y = candidatesRect.y + 3.0f;
for (i = 0; i < num_candidates; ++i) {
if (!candidates[i]) {
for (i = 0; i < ctx->num_candidates; ++i) {
if (!ctx->candidates[i]) {
continue;
}
@ -595,8 +613,8 @@ static void DrawCandidates(int rendererID, SDL_FRect *cursorRect)
dstRect.w = UNIFONT_GLYPH_SIZE * UNIFONT_DRAW_SCALE;
dstRect.h = UNIFONT_GLYPH_SIZE * UNIFONT_DRAW_SCALE;
if (horizontal_candidates) {
const char *utext = candidates[i];
if (ctx->horizontal_candidates) {
const char *utext = ctx->candidates[i];
Uint32 codepoint;
size_t len;
float start;
@ -611,7 +629,7 @@ static void DrawCandidates(int rendererID, SDL_FRect *cursorRect)
utext += len;
}
if (i == selected_candidate) {
if (i == ctx->selected_candidate) {
underlineRect.x = start;
underlineRect.y = dstRect.y + dstRect.h - 2;
underlineRect.h = 2;
@ -621,7 +639,7 @@ static void DrawCandidates(int rendererID, SDL_FRect *cursorRect)
SDL_RenderFillRect(renderer, &underlineRect);
}
} else {
const char *utext = candidates[i];
const char *utext = ctx->candidates[i];
Uint32 codepoint;
size_t len;
float start;
@ -634,7 +652,7 @@ static void DrawCandidates(int rendererID, SDL_FRect *cursorRect)
utext += len;
}
if (i == selected_candidate) {
if (i == ctx->selected_candidate) {
underlineRect.x = start;
underlineRect.y = dstRect.y + dstRect.h - 2;
underlineRect.h = 2;
@ -653,22 +671,28 @@ static void DrawCandidates(int rendererID, SDL_FRect *cursorRect)
}
}
static void UpdateTextInputArea(SDL_Window *window, const SDL_FRect *cursorRect)
static void UpdateTextInputArea(WindowState *ctx, const SDL_FRect *cursorRect)
{
SDL_Rect rect;
int cursor_offset = (int)(cursorRect->x - textRect.x);
int cursor_offset = (int)(cursorRect->x - ctx->textRect.x);
rect.x = (int)textRect.x;
rect.y = (int)textRect.y;
rect.w = (int)textRect.w;
rect.h = (int)textRect.h;
SDL_SetTextInputArea(window, &rect, cursor_offset);
rect.x = (int)ctx->textRect.x;
rect.y = (int)ctx->textRect.y;
rect.w = (int)ctx->textRect.w;
rect.h = (int)ctx->textRect.h;
SDL_SetTextInputArea(ctx->window, &rect, cursor_offset);
}
static void CleanupVideo(void)
{
SDL_StopTextInput(state->windows[0]);
ClearCandidates();
int i;
for (i = 0; i < state->num_windows; ++i) {
WindowState *ctx = &windowstate[i];
SDL_StopTextInput(ctx->window);
ClearCandidates(ctx);
}
#ifdef HAVE_SDL_TTF
TTF_CloseFont(font);
TTF_Quit();
@ -677,27 +701,28 @@ static void CleanupVideo(void)
#endif
}
static void RedrawWindow(int rendererID)
static void RedrawWindow(WindowState *ctx)
{
SDL_Renderer *renderer = state->renderers[rendererID];
SDL_Renderer *renderer = ctx->renderer;
int rendererID = ctx->rendererID;
SDL_FRect drawnTextRect, cursorRect, underlineRect;
SDL_SetRenderDrawColor(renderer, backColor.r, backColor.g, backColor.b, backColor.a);
SDL_RenderFillRect(renderer, &textRect);
SDL_RenderFillRect(renderer, &ctx->textRect);
/* Initialize the drawn text rectangle for the cursor */
drawnTextRect.x = textRect.x;
drawnTextRect.y = textRect.y + (textRect.h - UNIFONT_GLYPH_SIZE * UNIFONT_DRAW_SCALE) / 2;
drawnTextRect.x = ctx->textRect.x;
drawnTextRect.y = ctx->textRect.y + (ctx->textRect.h - UNIFONT_GLYPH_SIZE * UNIFONT_DRAW_SCALE) / 2;
drawnTextRect.w = 0.0f;
drawnTextRect.h = UNIFONT_GLYPH_SIZE * UNIFONT_DRAW_SCALE;
if (*text) {
if (ctx->text[0]) {
#ifdef HAVE_SDL_TTF
SDL_Surface *textSur = TTF_RenderUTF8_Blended(font, text, textColor);
SDL_Surface *textSur = TTF_RenderUTF8_Blended(font, ctx->text, textColor);
SDL_Texture *texture;
/* Vertically center text */
drawnTextRect.y = textRect.y + (textRect.h - textSur->h) / 2;
drawnTextRect.y = ctx->textRect.y + (ctx->textRect.h - textSur->h) / 2;
drawnTextRect.w = textSur->w;
drawnTextRect.h = textSur->h;
@ -707,13 +732,13 @@ static void RedrawWindow(int rendererID)
SDL_RenderTexture(renderer, texture, NULL, &drawnTextRect);
SDL_DestroyTexture(texture);
#else
char *utext = text;
char *utext = ctx->text;
Uint32 codepoint;
size_t len;
SDL_FRect dstrect;
dstrect.x = textRect.x;
dstrect.y = textRect.y + (textRect.h - UNIFONT_GLYPH_SIZE * UNIFONT_DRAW_SCALE) / 2;
dstrect.x = ctx->textRect.x;
dstrect.y = ctx->textRect.y + (ctx->textRect.h - UNIFONT_GLYPH_SIZE * UNIFONT_DRAW_SCALE) / 2;
dstrect.w = UNIFONT_GLYPH_SIZE * UNIFONT_DRAW_SCALE;
dstrect.h = UNIFONT_GLYPH_SIZE * UNIFONT_DRAW_SCALE;
drawnTextRect.y = dstrect.y;
@ -729,14 +754,14 @@ static void RedrawWindow(int rendererID)
}
/* The marked text rectangle is the text area that hasn't been filled by committed text */
markedRect.x = textRect.x + drawnTextRect.w;
markedRect.w = textRect.w - drawnTextRect.w;
if (markedRect.w < 0) {
ctx->markedRect.x = ctx->textRect.x + drawnTextRect.w;
ctx->markedRect.w = ctx->textRect.w - drawnTextRect.w;
if (ctx->markedRect.w < 0) {
/* Stop text input because we cannot hold any more characters */
SDL_StopTextInput(state->windows[0]);
SDL_StopTextInput(ctx->window);
return;
} else {
SDL_StartTextInput(state->windows[0]);
SDL_StartTextInput(ctx->window);
}
/* Update the drawn text rectangle for composition text, after the committed text */
@ -748,26 +773,26 @@ static void RedrawWindow(int rendererID)
cursorRect.w = 2;
cursorRect.h = drawnTextRect.h;
if (markedText[0]) {
if (ctx->markedText[0]) {
#ifdef HAVE_SDL_TTF
SDL_Surface *textSur;
SDL_Texture *texture;
if (cursor) {
char *p = utf8_advance(markedText, cursor);
if (ctx->cursor) {
char *p = utf8_advance(ctx->markedText, ctx->cursor);
char c = 0;
if (!p) {
p = &markedText[SDL_strlen(markedText)];
p = &ctx->markedText[SDL_strlen(ctx->markedText)];
}
c = *p;
*p = 0;
TTF_SizeUTF8(font, markedText, &drawnTextRect.w, NULL);
TTF_SizeUTF8(font, ctx->markedText, &drawnTextRect.w, NULL);
cursorRect.x += drawnTextRect.w;
*p = c;
}
textSur = TTF_RenderUTF8_Blended(font, markedText, textColor);
textSur = TTF_RenderUTF8_Blended(font, ctx->markedText, textColor);
/* Vertically center text */
drawnTextRect.y = textRect.y + (textRect.h - textSur->h) / 2;
drawnTextRect.y = ctx->textRect.y + (ctx->textRect.h - textSur->h) / 2;
drawnTextRect.w = textSur->w;
drawnTextRect.h = textSur->h;
@ -777,19 +802,19 @@ static void RedrawWindow(int rendererID)
SDL_RenderTexture(renderer, texture, NULL, &drawnTextRect);
SDL_DestroyTexture(texture);
if (cursor_length > 0) {
if (ctx->cursor_length > 0) {
/* FIXME: Need to measure text extents */
cursorRect.w = cursor_length * UNIFONT_GLYPH_SIZE * UNIFONT_DRAW_SCALE;
cursorRect.w = ctx->cursor_length * UNIFONT_GLYPH_SIZE * UNIFONT_DRAW_SCALE;
}
#else
int i = 0;
char *utext = markedText;
char *utext = ctx->markedText;
Uint32 codepoint;
size_t len;
SDL_FRect dstrect;
dstrect.x = drawnTextRect.x;
dstrect.y = textRect.y + (textRect.h - UNIFONT_GLYPH_SIZE * UNIFONT_DRAW_SCALE) / 2;
dstrect.y = ctx->textRect.y + (ctx->textRect.h - UNIFONT_GLYPH_SIZE * UNIFONT_DRAW_SCALE) / 2;
dstrect.w = UNIFONT_GLYPH_SIZE * UNIFONT_DRAW_SCALE;
dstrect.h = UNIFONT_GLYPH_SIZE * UNIFONT_DRAW_SCALE;
drawnTextRect.y = dstrect.y;
@ -799,22 +824,22 @@ static void RedrawWindow(int rendererID)
float advance = unifont_draw_glyph(codepoint, rendererID, &dstrect) * UNIFONT_DRAW_SCALE;
dstrect.x += advance;
drawnTextRect.w += advance;
if (i < cursor) {
if (i < ctx->cursor) {
cursorRect.x += advance;
}
i++;
utext += len;
}
if (cursor_length > 0) {
cursorRect.w = cursor_length * UNIFONT_GLYPH_SIZE * UNIFONT_DRAW_SCALE;
if (ctx->cursor_length > 0) {
cursorRect.w = ctx->cursor_length * UNIFONT_GLYPH_SIZE * UNIFONT_DRAW_SCALE;
}
#endif
cursorRect.y = drawnTextRect.y;
cursorRect.h = drawnTextRect.h;
underlineRect = markedRect;
underlineRect = ctx->markedRect;
underlineRect.y = drawnTextRect.y + drawnTextRect.h - 2;
underlineRect.h = 2;
underlineRect.w = drawnTextRect.w;
@ -825,26 +850,26 @@ static void RedrawWindow(int rendererID)
/* Draw the cursor */
Uint64 now = SDL_GetTicks();
if ((now - last_cursor_change) >= CURSOR_BLINK_INTERVAL_MS) {
cursor_visible = !cursor_visible;
last_cursor_change = now;
if ((now - ctx->last_cursor_change) >= CURSOR_BLINK_INTERVAL_MS) {
ctx->cursor_visible = !ctx->cursor_visible;
ctx->last_cursor_change = now;
}
if (cursor_length > 0) {
if (ctx->cursor_length > 0) {
/* We'll show a highlight */
SDL_SetRenderDrawBlendMode(renderer, highlight_mode);
SDL_SetRenderDrawColor(renderer, 255, 255, 255, 255);
SDL_RenderFillRect(renderer, &cursorRect);
SDL_SetRenderDrawBlendMode(renderer, SDL_BLENDMODE_NONE);
} else if (cursor_visible) {
} else if (ctx->cursor_visible) {
SDL_SetRenderDrawColor(renderer, lineColor.r, lineColor.g, lineColor.b, lineColor.a);
SDL_RenderFillRect(renderer, &cursorRect);
}
/* Draw the candidates */
DrawCandidates(rendererID, &cursorRect);
DrawCandidates(ctx, &cursorRect);
/* Update the area used to draw composition UI */
UpdateTextInputArea(state->windows[0], &cursorRect);
UpdateTextInputArea(ctx, &cursorRect);
}
static void Redraw(void)
@ -858,8 +883,7 @@ static void Redraw(void)
SDL_SetRenderDrawColor(renderer, 0, 0, 0, 0);
SDL_RenderClear(renderer);
/* Sending in the window id to let the font renderers know which one we're working with. */
RedrawWindow(i);
RedrawWindow(&windowstate[i]);
SDL_RenderPresent(renderer);
}
@ -920,6 +944,12 @@ int main(int argc, char *argv[])
return 2;
}
windowstate = (WindowState *)SDL_calloc(state->num_windows, sizeof(*windowstate));
if (!windowstate) {
SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't allocate window state: %s\n", SDL_GetError());
return -1;
}
fontname = GetResourceFilename(fontname, DEFAULT_FONT);
#ifdef HAVE_SDL_TTF
@ -939,10 +969,18 @@ int main(int argc, char *argv[])
SDL_Log("Using font: %s\n", fontname);
InitInput();
/* Create the windows and initialize the renderers */
/* Initialize window state */
for (i = 0; i < state->num_windows; ++i) {
WindowState *ctx = &windowstate[i];
SDL_Window *window = state->windows[i];
SDL_Renderer *renderer = state->renderers[i];
ctx->window = window;
ctx->renderer = renderer;
ctx->rendererID = i;
InitInput(ctx);
SDL_SetRenderDrawBlendMode(renderer, SDL_BLENDMODE_NONE);
SDL_SetRenderDrawColor(renderer, 0xA0, 0xA0, 0xA0, 0xFF);
SDL_RenderClear(renderer);
@ -961,33 +999,38 @@ int main(int argc, char *argv[])
while (SDL_PollEvent(&event)) {
SDLTest_CommonEvent(state, &event, &done);
switch (event.type) {
case SDL_EVENT_KEY_DOWN:
case SDL_EVENT_KEY_DOWN: {
WindowState *ctx = GetWindowStateForWindowID(event.key.windowID);
if (!ctx) {
break;
}
switch (event.key.key) {
case SDLK_RETURN:
text[0] = 0x00;
ctx->text[0] = 0x00;
break;
case SDLK_BACKSPACE:
/* Only delete text if not in editing mode. */
if (!markedText[0]) {
size_t textlen = SDL_strlen(text);
if (!ctx->markedText[0]) {
size_t textlen = SDL_strlen(ctx->text);
do {
if (textlen == 0) {
break;
}
if (!(text[textlen - 1] & 0x80)) {
if (!(ctx->text[textlen - 1] & 0x80)) {
/* One byte */
text[textlen - 1] = 0x00;
ctx->text[textlen - 1] = 0x00;
break;
}
if ((text[textlen - 1] & 0xC0) == 0x80) {
if ((ctx->text[textlen - 1] & 0xC0) == 0x80) {
/* Byte from the multibyte sequence */
text[textlen - 1] = 0x00;
ctx->text[textlen - 1] = 0x00;
textlen--;
}
if ((text[textlen - 1] & 0xC0) == 0xC0) {
if ((ctx->text[textlen - 1] & 0xC0) == 0xC0) {
/* First byte of multibyte sequence */
text[textlen - 1] = 0x00;
ctx->text[textlen - 1] = 0x00;
break;
}
} while (1);
@ -1007,44 +1050,59 @@ int main(int argc, char *argv[])
SDL_static_cast(Uint32, event.key.key),
SDL_GetKeyName(event.key.key));
break;
}
case SDL_EVENT_TEXT_INPUT: {
WindowState *ctx = GetWindowStateForWindowID(event.text.windowID);
if (!ctx) {
break;
}
case SDL_EVENT_TEXT_INPUT:
if (event.text.text[0] == '\0' || event.text.text[0] == '\n' || markedRect.w < 0) {
if (event.text.text[0] == '\0' || event.text.text[0] == '\n' || ctx->markedRect.w < 0) {
break;
}
SDL_Log("Keyboard: text input \"%s\"\n", event.text.text);
if (SDL_strlen(text) + SDL_strlen(event.text.text) < sizeof(text)) {
SDL_strlcat(text, event.text.text, sizeof(text));
if (SDL_strlen(ctx->text) + SDL_strlen(event.text.text) < sizeof(ctx->text)) {
SDL_strlcat(ctx->text, event.text.text, sizeof(ctx->text));
}
SDL_Log("text inputted: %s\n", text);
SDL_Log("text inputted: %s\n", ctx->text);
/* After text inputted, we can clear up markedText because it */
/* is committed */
markedText[0] = 0;
ctx->markedText[0] = 0;
break;
}
case SDL_EVENT_TEXT_EDITING: {
WindowState *ctx = GetWindowStateForWindowID(event.edit.windowID);
if (!ctx) {
break;
}
case SDL_EVENT_TEXT_EDITING:
SDL_Log("text editing \"%s\", selected range (%" SDL_PRIs32 ", %" SDL_PRIs32 ")\n",
event.edit.text, event.edit.start, event.edit.length);
SDL_strlcpy(markedText, event.edit.text, sizeof(markedText));
cursor = event.edit.start;
cursor_length = event.edit.length;
SDL_strlcpy(ctx->markedText, event.edit.text, sizeof(ctx->markedText));
ctx->cursor = event.edit.start;
ctx->cursor_length = event.edit.length;
break;
}
case SDL_EVENT_TEXT_EDITING_CANDIDATES: {
WindowState *ctx = GetWindowStateForWindowID(event.edit.windowID);
if (!ctx) {
break;
}
case SDL_EVENT_TEXT_EDITING_CANDIDATES:
SDL_Log("text candidates:\n");
for (i = 0; i < event.edit_candidates.num_candidates; ++i) {
SDL_Log("%c%s\n", i == event.edit_candidates.selected_candidate ? '>' : ' ', event.edit_candidates.candidates[i]);
}
ClearCandidates();
SaveCandidates(&event);
ClearCandidates(ctx);
SaveCandidates(ctx, &event);
break;
}
default:
break;
}